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NSR database version of April 24, 2024.

Search: Author = R.Beck

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2023BA25      Phys.Lett. B 844, 138080 (2023)

M.Bashkanov, D.P.Watts, S.Kay, S.Abt, P.Achenbach, P.Adlarson, F.Afzal, Z.Ahmed, C.S.Akondi, J.R.M.Annand, H.J.Arends, R.Beck, M.Biroth, N.Borisov, A.Braghieri, W.J.Briscoe, F.Cividini, C.Collicott, S.Costanza, A.Denig, E.J.Downie, P.Drexler, S.Fegan, A.Fix, S.Gardner, D.Ghosal, D.I.Glazier, I.Gorodnov, W.Gradl, M.Gunther, D.Gurevich, L.Heijkenskjold, D.Hornidge, G.M.Huber, A.Kaser, V.L.Kashevarov, M.Korolija, B.Krusche, A.Lazarev, K.Livingston, S.Lutterer, I.J.D.MacGregor, D.M.Manley, P.P.Martel, R.Miskimen, E.Mornacchi, C.Mullen, A.Neganov, A.Neiser, M.Ostrick, P.B.Otte, D.Paudyal, P.Pedroni, A.Powell, S.N.Prakhov, V.Sokhoyan, K.Spieker, O.Steffen, I.I.Strakovsky, T.Strub, I.Supek, A.Thiel, M.Thiel, A.Thomas, Yu.A.Usov, S.Wagner, J.Wettig, M.Wolfes, N.Zachariou

First measurement of polarisation transfer Cnx, in deuteron photodisintegration

NUCLEAR REACTIONS 2H(polarized γ, X), E=370-700 MeV; measured reaction products; deduced the polarisation transfer from a circularly-polarised photon to the final state neutron in deuterium photodisintegration. Cryogenic liquid deuterium target within the Crystal Ball detector at MAMI.

doi: 10.1016/j.physletb.2023.138080
Citations: PlumX Metrics


2023KO30      Eur.Phys.J. A 59, 254 (2023)

K.Kohl, T.C.Jude, S.Alef, R.Beck, A.Braghieri, P.L.Cole, D.Elsner, R.Di Salvo, A.Fantini, O.Freyermuth, F.Frommberger, F.Ghio, A.Gridnev, D.Hammann, J.Hannappel, N.Kozlenko, A.Lapik, P.Levi Sandri, V.Lisin, G.Mandaglio, R.Messi, D.Moricciani, V.Nedorezov, V.A.Nikonov, D.Novinskiy, P.Pedroni, A.Polonskiy, B.-E.Reitz, M.Romaniuk, G.Scheluchin, H.Schmieden, A.Stuglev, V.Sumachev, V.Tarakanov, for the BGO-OD Collaboration

Measurement of the γn → K0Σ0 differential cross section over the K* threshold

doi: 10.1140/epja/s10050-023-01133-1
Citations: PlumX Metrics


2021AL07      Eur.Phys.J. A 57, 80 (2021)

S.Alef, P.Bauer, D.Bayadilov, R.Beck, A.Bella, J.Bieling, A.Braghieri, P.L.Cole, D.Elsner, R.Di Salvo, A.Fantini, O.Freyermuth, F.Frommberger, F.Ghio, S.Goertz, A.Gridnev, D.Hammann, J.Hannappel, T.C.Jude, K.Kohl, N.Kozlenko, A.Lapik, P.Levi Sandri, V.Lisin, G.Mandaglio, F.Messi, R.Messi, D.Moricciani, V.Nedorezov, V.A.Nikonov, D.Novinskiy, P.Pedroni, A.Polonskiy, B.-E.Reitz, M.Romaniuk, A.V.Sarantsev, G.Scheluchin, H.Schmieden, A.Stuglev, V.Sumachev, V.Vegna, V.Tarakanov, T.Zimmermann

K+Λ photoproduction at forward angles and low momentum transfer

NUCLEAR REACTIONS 1H(γ, K+), E<3.2 GeV; measured reaction products; deduced missing mass, yields, σ(θ). Comparison with available data.

doi: 10.1140/epja/s10050-021-00392-0
Citations: PlumX Metrics


2021ME22      Eur.Phys.J. A 57, 325 (2021)

V.Metag, M.Nanova, J.Hartmann, P.Mahlberg, F.Afzal, C.Bartels, D.Bayadilov, R.Beck, M.Becker, E.Blanke, K.-T.Brinkmann, S.Ciupka, V.Crede, M.Dieterle, H.Dutz, D.Elsner, F.Frommberger, A.Gridnev, M.Gottschall, M.Gruner, Ch.Hammann, J.Hannappel, W.Hillert, J.Hoff, Ph.Hoffmeister, Ch.Honisch, T.Jude, H.Kalinowsky, F.Kalischewski, I.Keshelashvili, B.Ketzer, P.Klassen, F.Klein, K.Koop, P.Kroenert, B.Krusche, M.Lang, I.Lopatin, F.Messi, W.Meyer, B.Mitlasoczky, J.Muller, J.Mullers, V.Nikonov, V.Novinsky, R.Novotny, D.Piontek, G.Reicherz, L.Richter, T.Rostomyan, S.Runkel, B.Salisbury, A.Sarantsev, D.Schaab, Ch.Schmidt, H.Schmieden, J.Schultes, T.Seifen, V.Sokhoyan, C.Sowa, K.Spieker, N.Stausberg, A.Thiel, U.Thoma, T.Triffterer, M.Urban, G.Urff, H.van Pee, M.Wagner, D.Walther, Ch.Wendel, D.Werthmuller, U.Wiedner, A.Wilson, A.Winnebeck, L.Witthauer, Y.Wunderlich

Observation of a structure in the M invariant mass distribution near 1700 MeV/c2 in the γ p -> p π0 η reaction - The CBELSA/TAPS Collaboration

doi: 10.1140/epja/s10050-021-00634-1
Citations: PlumX Metrics


2019AK10      Eur.Phys.J. A 55, 202 (2019)

C.S.Akondi, K.Bantawa, D.M.Manley, S.Abt, P.Achenbach, F.Afzal, P.Aguar-Bartolome, Z.Ahmed, J.R.M.Annand, H.J.Arends, M.Bashkanov, R.Beck, M.Biroth, N.Borisov, A.Braghieri, W.J.Briscoe, F.Cividini, C.Collicott, S.Costanza, A.Denig, M.Dieterle, E.J.Downie, P.Drexler, M.I.Ferretti-Bondy, S.Gardner, D.I.Glazier, I.Gorodnov, W.Gradl, M.Gunther, D.Gurevich, S.Kay, L.Heijkenskjold, D.Hornidge, G.M.Huber, M.Kaser, V.L.Kashevarov, M.Korolija, B.Krusche, A.Lazarev, K.Livingston, S.Lutterer, J.C.McGeorge, I.J.D.MacGregor, P.P.Martel, D.G.Middleton, R.Miskimen, E.Mornacchi, A.Mushkarenkov, C.Mullen, A.Neganov, A.Neiser, M.Oberle, M.Ostrick, P.B.Otte, B.Oussena, D.Paudyal, P.Pedroni, A.Powell, S.N.Prakhov, G.Ron, T.Rostomyan, A.Sarty, C.Sfienti, V.Sokhoyan, K.Spieker, O.Steffen, I.I.Strakovsky, Th.Strub, I.Supek, A.Thiel, M.Thiel, A.Thomas, M.Unverzagt, Yu.A.Usov, N.K.Walford, D.P.Watts, S.Wagner, D.Werthmuller, J.Wettig, L.Witthauer, M.Wolfes

Experimental study of the γp → K0Σ+, γn → K0Λ, and γn → K0Σ0 reactions at the Mainz Microtron

doi: 10.1140/epja/i2019-12924-x
Citations: PlumX Metrics


2019BA02      Phys.Lett. B 789, 7 (2019)

M.Bashkanov, S.Kay, D.P.Watts, C.Mullen, S.Abt, P.Achenbach, P.Adlarson, F.Afzal, Z.Ahmed, C.S.Akondi, J.R.M.Annand, H.J.Arends, R.Beck, M.Biroth, N.Borisov, A.Braghieri, W.J.Briscoe, F.Cividini, C.Collicott, S.Costanza, A.Denig, E.J.Downie, P.Drexler, S.Garni, D.I.Glazier, I.Gorodnov, W.Gradl, M.Gunther, D.Gurevich, L.Heijkenskjold, D.Hornidge, G.M.Huber, A.Kaser, V.L.Kashevarov, M.Korolija, B.Krusche, A.Lazarev, K.Livingston, S.Lutterer, I.J.D.MacGregor, R.Macrae, D.M.Manley, P.P.Martel, R.Miskimen, E.Mornacchi, A.Neganov, A.Neiser, M.Ostrick, P.B.Otte, D.Paudyal, P.Pedroni, A.Powell, S.N.Prakhov, G.Ron, T.Rostomyan, A.Sarty, C.Sfienti, V.Sokhoyan, K.Spieker, O.Steffen, I.I.Strakovsky, T.Strub, I.Supek, A.Thiel, M.Thiel, A.Thomas, Yu.A.Usov, S.Wagner, N.K.Walford, D.Werthmuller, J.Wettig, M.Wolfes, L.A.Zana

Deuteron photodisintegration by polarized photons in the region of the d*(2380)

NUCLEAR REACTIONS 2H(polarized γ, np), E=420-620 MeV; measured reaction products; deduced beam-spin asymmetry for deuteron photodisintegration.

doi: 10.1016/j.physletb.2018.12.026
Citations: PlumX Metrics


2017DI10      Phys.Lett. B 770, 523 (2017)

M.Dieterle, L.Witthauer, F.Cividini, S.Abt, P.Achenbach, P.Adlarson, F.Afzal, Z.Ahmed, C.S.Akondi, J.R.M.Annand, H.J.Arends, M.Bashkanov, R.Beck, M.Biroth, N.S.Borisov, A.Braghieri, W.J.Briscoe, S.Costanza, C.Collicott, A.Denig, E.J.Downie, P.Drexler, M.I.Ferretti-Bondy, S.Gardner, S.Garni, D.I.Glazier, D.Glowa, W.Gradl, M.Gunther, G.M.Gurevich, D.Hamilton, D.Hornidge, G.M.Huber, A.Kaser, V.L.Kashevarov, S.Kay, I.Keshelashvili, R.Kondratiev, M.Korolija, B.Krusche, A.B.Lazarev, J.M.Linturi, V.Lisin, K.Livingston, S.Lutterer, I.J.D.MacGregor, J.Mancell, D.M.Manley, P.P.Martel, V.Metag, W.Meyer, R.Miskimen, E.Mornacchi, A.Mushkarenkov, A.B.Neganov, A.Neiser, M.Oberle, M.Ostrick, P.B.Otte, D.Paudyal, P.Pedroni, A.Polonski, S.N.Prakhov, A.Rajabi, G.Reicherz, G.Ron, T.Rostomyan, A.Sarty, C.Sfienti, M.H.Sikora, V.Sokhoyan, K.Spieker, O.Steffen, I.I.Strakovsky, Th.Strub, I.Supek, A.Thiel, M.Thiel, A.Thomas, M.Unverzagt, Yu.A.Usov, S.Wagner, N.K.Walford, D.P.Watts, D.Werthmuller, J.Wettig, M.Wolfes, L.Zana

First measurement of the polarization observable E and helicity-dependent cross sections in single π0 photoproduction from quasi-free nucleons

NUCLEAR REACTIONS 2H(γ, π0), E=400-1450 MeV; measured reaction products; deduced σ.

doi: 10.1016/j.physletb.2017.04.079
Citations: PlumX Metrics


2017WU08      Eur.Phys.J. A 53, 86 (2017)

Y.Wunderlich, F.Afzal, A.Thiel, R.Beck

Determining the dominant partial wave contributions from angular distributions of single- and double-polarization observables in pseudoscalar meson photoproduction using PWA

doi: 10.1140/epja/i2017-12255-0
Citations: PlumX Metrics


2017WU12      Phys.Rev. C 96, 065202 (2017)

Y.Wunderlich, A.Svarc, R.L.Workman, L.Tiator, R.Beck

Toward an understanding of discrete ambiguities in truncated partial-wave analyses

doi: 10.1103/PhysRevC.96.065202
Citations: PlumX Metrics


2016AN18      Eur.Phys.J. A 52, 284 (2016)

A.V.Anisovich, R.Beck, M.Doring, M.Gottschall, J.Hartmann, V.Kashevarov, E.Klempt, Ulf-G.Meissner, V.Nikonov, M.Ostrick, D.Ronchen, A.Sarantsev, I.Strakovsky, A.Thiel, L.Tiator, U.Thoma, R.Workman, Y.Wunderlich

The impact of new polarization data from Bonn, Mainz and Jefferson Laboratory on γp → πN multipoles

NUCLEAR REACTIONS 1H(γ, π0), (γ, π+), E=147-219, 650-2200 MeV; analyzed published σ(θ), beam asymmetry, double polarization data; calculated σ(θ), beam asymmetry, double polarization using PWA (Partial-Wave Analysis) BnGa code, Juelich-Bonn DCC (Dynamical CC) model, MAID and SAID models; deduced photoproduction multipoles, partial waves real, imaginary parts, parameters.

doi: 10.1140/epja/i2016-16284-9
Citations: PlumX Metrics


2014AN07      Eur.Phys.J. A 50, 129 (2014)

A.V.Anisovich, R.Beck, V.Burkert, E.Klempt, M.E.McCracken, V.A.Nikonov, A.V.Sarantsev, R.A.Schumacher, U.Thoma

Energy-independent PWA of the reaction γp → K+Λ

doi: 10.1140/epja/i2014-14129-3
Citations: PlumX Metrics


2014WU04      Phys.Rev. C 89, 055203 (2014)

Y.Wunderlich, R.Beck, L.Tiator

The complete-experiment problem of photoproduction of pseudoscalar mesons in a truncated partial-wave analysis

doi: 10.1103/PhysRevC.89.055203
Citations: PlumX Metrics


2013AN20      Eur.Phys.J. A 49, 121 (2013)

A.V.Anisovich, R.Beck, E.Klempt, V.A.Nikonov, A.V.Sarantsev, U.Thoma, Y.Wunderlich

Study of ambiguities in π-p → ΛK0 scattering amplitudes

doi: 10.1140/epja/i2013-13121-9
Citations: PlumX Metrics


2013BA28      Phys.Lett. B 723, 71 (2013)

P.A.Bartolome, A.Mushkarenkov, J.Ahrens, J.R.M.Annand, H.-J.Arends, R.Beck, V.Bekrenev, H.Berghauser, A.Braghieri, W.J.Briscoe, S.N.Cherepnya, S.Costanza, P.Drexler, L.V.Filkov, A.Fix, G.Giardina, D.I.Glazier, D.Hamilton, E.Heid, W.Heil, D.Hornidge, D.Howdle, I.Jaegle, O.Jahn, T.Jude, V.L.Kashevarov, I.Keshelashvili, R.Kondratiev, M.Korolija, J.Krimmer, B.Krusche, S.Kruglov, A.Kulbardis, V.Lisin, K.Livingston, J.Mancell, D.G.Middleton, I.J.D.MacGregor, D.M.Manley, J.C.McGeorge, V.Metag, B.M.K.Nefkens, A.Nikolaev, M.Oberle, M.Ostrick, H.Ortega, P.B.Otte, B.Oussena, P.Pedroni, F.Pheron, S.Prakhov, A.Polonski, F.Rigamonti, M.Romaniuk, G.Rosner, T.Rostomyan, S.Schumann, D.Sober, A.Starostin, I.Supek, M.Thiel, A.Thomas, M.Unverzagt, D.Watts, D.Werthmuller

First measurement of the helicity dependence of 3He photoreactions in the Δ(1232) resonance region

NUCLEAR REACTIONS 3He(γ, X), (γ, π0), (γ, π+), (γ, π-), (γ, 2p), E=150-500 MeV; measured reaction products, Eγ, Iγ; deduced total σ, unpolarized σ, polarized σ. Large acceptance Crystal Ball spectrometer.

doi: 10.1016/j.physletb.2013.04.057
Citations: PlumX Metrics


2013TH10      Eur.Phys.J. A 49, 132 (2013)

M.Thiel, V.Metag, P.Aguar-Bartolome, L.K.Akasoy, J.R.M.Annand, H.J.Arends, K.Bantawa, R.Beck, V.Bekrenev, H.Berghauser, A.Braghieri, W.J.Briscoe, J.Brudvik, S.Cherepnya, M.Dieterle, E.J.Downie, P.Drexler, L.V.Filkov, S.Friedrich, D.I.Glazier, R.Gregor, E.Heid, D.Hornidge, O.Jahn, T.C.Jude, V.L.Kashevarov, I.Keshelashvili, R.Kondratiev, M.Korolija, M.Kotulla, B.Krusche, A.Kulbardis, B.Lemmer, V.Lisin, K.Livingston, S.Lugert, I.J.D.MacGregor, Y.Maghrbi, J.Mancell, D.M.Manley, M.Martinez, J.C.McGeorge, E.F.McNicoll, D.G.Middleton, A.Mushkarenkov, M.Nanova, B.M.K.Nefkens, A.Nikolaev, R.W.Novotny, M.Ostrick, P.Pedroni, F.Pheron, A.Polonski, S.N.Prakhov, J.Robinson, G.Rosner, T.Rostomyan, S.Schumann, M.H.Sikora, A.Starostin, I.Supek, A.Thomas, M.Unverzagt, D.P.Watts, J.Weil, D.Werthmuller, I.Zamboni

In-medium modifications of the ω meson near the production threshold

doi: 10.1140/epja/i2013-13132-6
Citations: PlumX Metrics


2012AN02      Eur.Phys.J. A 48, 15 (2012)

A.V.Anisovich, R.Beck, E.Klempt, V.A.Nikonov, A.V.Sarantsev, U.Thoma

Properties of baryon resonances from a multichannel partial wave analysis

doi: 10.1140/epja/i2012-12015-8
Citations: PlumX Metrics


2012AN07      Eur.Phys.J. A 48, 88 (2012)

A.V.Anisovich, R.Beck, E.Klempt, V.A.Nikonov, A.V.Sarantsev, U.Thoma

Pion- and photo-induced transition amplitudes to ΛK, ΣK and Nη

NUCLEAR REACTIONS 1H(π+, K++, E=1700=2200 MeV; calculated σ. Compared with data and other calculations.

doi: 10.1140/epja/i2012-12088-3
Citations: PlumX Metrics


2012PH03      Phys.Lett. B 709, 21 (2012)

F.Pheron, J.Ahrens, J.R.M.Annand, H.J.Arends, K.Bantawa, P.A.Bartolome, R.Beck, V.Bekrenev, H.Berghauser, B.Boillat, A.Braghieri, D.Branford, W.J.Briscoe, J.Brudvik, S.Cherepnya, B.Demissie, M.Dieterle, E.J.Downie, P.Drexler, D.I.Glazier, E.Heid, L.V.Filkov, D.Hornidge, D.Howdle, O.Jahn, I.Jaegle, T.C.Jude, V.L.Kashevarov, I.Keshelashvili, R.Kondratiev, M.Korolija, M.Kotulla, A.Kulbardis, S.P.Kruglov, B.Krusche, V.Lisin, K.Livingston, I.J.D.Macgregor, Y.Maghrbi, J.Mancell, D.M.Manley, Z.Marinides, M.Martinez, J.C.Mcgeorge, E.Mcnicoll, D.Mekterovic, V.Metag, S.Micanovic, D.G.Middleton, A.Mushkarenkov, B.M.K.Nefkens, A.Nikolaev, R.Novotny, M.Oberle, M.Ostrick, B.Oussena, P.Pedroni, A.Polonski, S.N.Prakhov, J.Robinson, G.Rosner, T.Rostomyan, S.Schumann, M.H.Sikora, D.I.Sober, A.Starostin, I.Supek, M.Thiel, A.Thomas, M.Unverzagt, D.P.Watts, D.Werthmuller, L.Witthauer, F.Zehr

Coherent photoproduction of η-mesons off 3He - search for η-mesic nuclei

NUCLEAR REACTIONS 3He(γ, η), E=597.8-695.1 MeV; measured products, 3He; deduced σ, σ(E), σ(θ). Data were imported from EXFOR entry G0031.

doi: 10.1016/j.physletb.2012.01.075
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetG0031.


2011AH01      Eur.Phys.J. A 47, 36 (2011)

J.Ahrens, S.Altieri, J.R.M.Annand, H.-J.Arends, R.Beck, M.A.Blackston, C.Bradtke, A.Braghieri, N.D'Hose, H.Dutz, A.Fix, E.Heid, O.Jahn, F.Klein, R.Kondratiev, M.Lang, V.Lisin, M.Martinez-Fabregate, J.C.McGeorge, W.Meyer, A.Panzeri, P.Pedroni, T.Pinelli, D.Protopopescu, G.Reicherz, Ch.Rohlof, G.Rosner, T.Rostomyan, D.Ryckbosch, G.Tamas, A.Thomas, H.R.Weller, for the GDH and A2 Collaborations

Measurement of the helicity-dependent total cross-section for the γn → pπ-π0 reaction

NUCLEAR REACTIONS 2H(γ, p), E=450-800 MeV; measured γ spectra, γ(proton)-, γ(charged-particle)-coin, charged-particle spectra using the DAPHNE detector with incident circularly polarized γ, longitudinally polarized deuterons; deduced unpolarized and polarized γn to pπ+π0 σ. Comparison with previous data and calculations.

doi: 10.1140/epja/i2011-11036-1
Citations: PlumX Metrics


2010AH02      Eur.Phys.J. A 44, 189 (2010)

J.Ahrens, S.Altieri, J.R.M.Annand, H.-J.Arends, R.Beck, M.A.Blackston, C.Bradtke, A.Braghieri, N.d'Hose, H.Dutz, A.Fix, E.Heid, O.Jahn, F.Klein, R.Kondratiev, M.Lang, V.Lisin, M.Martinez-Fabregate, J.C.McGeorge, W.Meyer, A.Panzeri, P.Pedroni, T.Pinelli, D.Protopopescu, G.Reicherz, Ch.Rohlof, G.Rosner, T.Rostomyan, D.Ryckbosch, M.Schwamb, G.Tamas, A.Thomas, H.R.Weller,

Helicity dependence of the γd → πNN reactions in the Δ -resonance region

NUCLEAR REACTIONS 2H(γ, πX), E=301-455 MeV; 2H(polarized γ, πX), E=307-451 MeV; measured yields, σ(θ), helicity-dependent σ(θ) with polarized beam; deduced reaction mechanism features. Comparison with other data and various models.

doi: 10.1140/epja/i2010-10946-6
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetM0808.


2007BL20      Eur.Phys.J. A 32, 219 (2007)

F.Bloch, J.Ahrens, J.R.M.Annand, R.Beck, L.S.Fog, D.Hornidge, S.Janssen, M.Kotulla, B.Krusche, J.C.McGeorge, I.J.D.MacGregor, J.G.Messchendorp, V.Metag, R.Novotny, R.O.Owens, M.Pfeiffer, M.Rost, R.Sanderson, S.Schadmand, A.Thomas, D.P.Watts

Double pion photoproduction off 40Ca

doi: 10.1140/epja/i2006-10383-2
Citations: PlumX Metrics


2007HA13      Phys.Rev. C 75, 044311 (2007)

N.P.Harrington, D.Branford, K.Fohl, E.Roche, J.R.M.Annand, R.Beck, P.Grabmayr, T.Hehl, D.Hornidge, K.Livingston, J.C.McGeorge, I.J.D.MacGregor, I.Martin, K.Monstad, F.Moschini, A.Reiter, S.Waddell, D.P.Watts, S.Young

Experimental study of the halo nucleus 6He using the 6Li(γ, π+)6He reaction

NUCLEAR REACTIONS 6Li(γ, π+), E=170-220 MeV; measured pion spectra, σ(E, θ). Comparison with model predictions, previous results.

doi: 10.1103/PhysRevC.75.044311
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetM0734.


2007WA12      Phys.Lett. B 647, 88 (2007)

D.P.Watts, J.R.M.Annand, R.Beck, D.Branford, D.I.Glazier, P.Grabmayr, K.Livingston, I.J.D.MacGregor, J.C.McGeorge, R.O.Owens, G.Rosner

Dependence of the 12C(γ(pol), pd)reaction on photon linear polarisation

NUCLEAR REACTIONS 12C(polarized γ, pX), E=170-350 MeV; measured particle spectra, σ(E), asymmetry. 3He(polarized γ, pd), E≈90-350 MeV; analysed asymmetry. Faddeev calculations, three-nucleon force.

doi: 10.1016/j.physletb.2007.02.013
Citations: PlumX Metrics


2006BE48      Eur.Phys.J. A 28, Supplement 1, 173 (2006)

R.Beck

Experiments with photons at MAMI

NUCLEAR REACTIONS 1H(polarized γ, π0), E=144-168, 280, 300, 320, 340, 360, 380 MeV; measured σ, photon asymmetry. 1H(γ, X), E=620-820 MeV; measured invariant mass spectra, η production σ.

doi: 10.1140/epja/i2006-09-018-1
Citations: PlumX Metrics


2006RE16      Eur.Phys.J. A 30, 461 (2006)

A.Reiter, P.S.Lumsden, J.Ahrens, J.R.M.Annand, R.Beck, J.C.McGeorge, R.O.Owens

A microscope for the Glasgow photon tagging spectrometer in Mainz

doi: 10.1140/epja/i2006-10130-9
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2005AH01      Eur.Phys.J. A 23, 113 (2005)

J.Ahrens, V.M.Alexeev, J.R.M.Annand, H.J.Arends, R.Beck, G.Caselotti, S.N.Cherepnya, D.Drechsel, L.V.Filkov, K.Fohl, I.Giller, P.Grabmayr, T.Hehl, D.Hornidge, V.L.Kashevarov, M.Kotulla, D.Krambrich, B.Krusche, M.Lang, J.C.McGeorge, I.J.D.MacGregor, V.Metag, M.Moinester, R.Novotny, M.Pfeiffer, M.Rost, S.Schadmand, S.Scherer, A.Thomas, C.Unkmeir, Th.Walcher

Measurement of the π+-meson polarizabilities via the γp → γπ+n reaction

NUCLEAR REACTIONS 1H(γ, π+γ), E=537-817 MeV; measured Eγ, En, (pion)nγ-coin, σ(θ); deduced pion polarizabilities. Tagged photon beam, comparison with model predictions.

doi: 10.1140/epja/i2004-10056-2
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2005AH07      Eur.Phys.J. A 26, 135 (2005)

J.Ahrens, S.Altieri, J.R.M.Annand, H.-J.Arends, R.Beck, A.Braghieri, N.d'Hose, H.Dutz, S.Goertz, P.Grabmayr, S.Hasegawa, E.Heid, H.Holvoet, L.Van Hoorebeke, N.Horikawa, T.Iwata, O.Jahn, P.Jennewein, R.Kondratiev, J.Krimmer, M.Lang, B.Lannoy, K.Livingston, J.C.McGeorge, W.Meyer, A.Panzeri, P.Pedroni, T.Pinelli, I.Preobrajenski, G.Reicherz, G.Rosner, M.Rost, T.Rostomyan, D.Ryckbosch, M.Schumacher, B.Seitz, G.Tamas, A.Thomas, R.van de Vyver, Th.Walcher, F.Zapadtka

Measurement of the G asymmetry for the γp → Nπ channels in the Δ(1232) resonance region

NUCLEAR REACTIONS 1H(polarized γ, π0), (polarized γ, π+), e ≈ 340 MeV; measured σ(θ), G asymmetries, related polarization observables. Polarized target.

doi: 10.1140/epja/i2005-10158-3
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2004BE12      Eur.Phys.J. A 19, Supplement 1, 279 (2004)

R.Beck, A.Starostin

Future experiments at MAMI

doi: 10.1140/epjad/s2004-03-046-4
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2004KO01      Phys.Lett. B 578, 63 (2004)

M.Kotulla, J.Ahrens, J.R.M.Annand, R.Beck, D.Hornidge, S.Janssen, B.Krusche, J.C.McGeorge, I.J.D.MacGregor, J.G.Messchendorp, V.Metag, R.Novotny, M.Pfeiffer, R.O.Owens, M.Rost, S.Schadmand, D.P.Watts

Double π0 photoproduction off the proton at threshold

NUCLEAR REACTIONS 1H(γ, 2π0), E=300-425 MeV; measured invariant mass spectra, σ(θ), σ. Tagged photons. Comparison with model predictions.

doi: 10.1016/j.physletb.2003.10.056
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2004KO11      Eur.Phys.J. A 19, 391 (2004)

K.Kossert, M.Camen, F.Wissmann, J.Ahrens, J.R.M.Annand, H.-J.Arends, R.Beck, G.Caselotti, P.Grabmayr, O.Jahn, P.Jennewein, M.I.Levchuk, A.I.L'vov, J.C.McGeorge, A.Natter, V.Olmos de Leon, V.A.Petrunkin, G.Rosner, M.Schumacher, B.Seitz, F.Smend, A.Thomas, W.Weihofen, F.Zapadtka

Quasi-free π0 photoproduction from the bound nucleon

NUCLEAR REACTIONS 2H(γ, π0n), (γ, π0p), E=200-400 MeV; 1H(γ, π0), E=200-400 MeV; measured σ(E, θ). 1n(γ, π0), E=300 MeV; deduced quasifree σ(θ).

doi: 10.1140/epja/i2003-10130-3
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2004KR16      Eur.Phys.J. A 22, 277 (2004)

B.Krusche, J.Lehr, J.Ahrens, J.R.M.Annand, R.Beck, F.Bloch, L.S.Fog, D.Hornidge, S.Janssen, M.Kotulla, J.C.McGeorge, I.J.D.MacGregor, J.Messchendorp, V.Metag, U.Mosel, R.Novotny, R.O.Owens, M.Pfeiffer, R.Sanderson, S.Schadmand, D.P.Watts

Photoproduction of π0-mesons from nuclei

NUCLEAR REACTIONS 12C, 40Ca, 93Nb, 208Pb(γ, π0X), E=200-800 MeV; measured missing-energy and missing-mass spectra, σ, σ(E, θ); deduced in-medium effects. Tagged photons, comparison with model predictions, previous results.

doi: 10.1140/epja/i2004-10033-9
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2004PF01      Phys.Rev.Lett. 92, 252001 (2004); Comment Phys.Rev.Lett. 94, 049101 (2005)

M.Pfeiffer, J.Ahrens, J.R.M.Annand, R.Beck, G.Caselotti, S.Cherepnya, K.Fohl, L.S.Fog, D.Hornidge, S.Janssen, V.Kashevarov, R.Kondratiev, M.Kotulla, B.Krusche, J.C.McGeorge, I.J.D.MacGregor, K.Mengel, J.G.Messchendorp, V.Metag, R.Novotny, M.Rost, S.Sack, R.Sanderson, S.Schadmand, A.Thomas, D.P.Watts

Photoproduction of η-Mesic 3He

NUCLEAR REACTIONS 3He(γ, X), E=600-820 MeV; measured η-meson production σ, σ(θ); deduced resonance structure. 3He deduced quasibound η-mesic state energy, width.

doi: 10.1103/PhysRevLett.92.252001
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2003AH01      Phys.Lett. 551B, 49 (2003)

J.Ahrens, S.Altieri, J.R.M.Annand, G.Anton, H.-J.Arends, K.Aulenbacher, R.Beck, C.Bradtke, A.Braghieri, N.Degrande, N.d'Hose, H.Dutz, S.Goertz, P.Grabmayr, K.Hansen, J.Harmsen, D.von Harrach, S.Hasegawa, T.Hasegawa, E.Heid, K.Helbing, H.Holvoet, L.Van Hoorebeke, N.Horikawa, T.Iwata, O.Jahn, P.Jennewein, T.Kageya, B.Kiel, F.Klein, R.Kondratiev, K.Kossert, J.Krimmer, M.Lang, B.Lannoy, R.Leukel, V.Lisin, T.Matsuda, J.C.McGeorge, A.Meier, D.Menze, W.Meyer, T.Michel, J.Naumann, A.Panzeri, P.Pedroni, T.Pinelli, I.Preobrajenski, E.Radtke, E.Reichert, G.Reicherz, Ch.Rohlof, G.Rosner, T.Rostomyan, C.Rovelli, D.Ryckbosch, M.Sauer, B.Schoch, M.Schumacher, B.Seitz, T.Speckner, N.Takabayashi, G.Tamas, A.Thomas, R.van de Vyver, A.Wakai, W.Weihofen, F.Wissmann, F.Zapadtka, G.Zeitler, and the GDH and A2 Collaborations

Helicity dependence of the γ(pol)p(pol) → nπ+π0 reaction in the second resonance region

NUCLEAR REACTIONS 1H(polarized γ, π+π0), E=400-800 MeV; measured σ, helicity dependence; deduced resonance features. Polarized target.

doi: 10.1016/S0370-2693(02)03008-3
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2003KO08      Eur.Phys.J. A 16, 259 (2003)

K.Kossert, M.Camen, F.Wissmann, J.Ahrens, J.R.M.Annand, H.-J.Arends, R.Beck, G.Caselotti, P.Grabmayr, O.Jahn, P.Jennewein, M.I.Levchuk, A.I.L'vov, J.C.McGeorge, A.Natter, V.Olmos de Leon, V.A.Petrun'kin, G.Rosner, M.Schumacher, B.Seitz, F.Smend, A.Thomas, W.Weihofen, F.Zapadtka

Quasi-free Compton scattering and the polarizabilities of the neutron

NUCLEAR REACTIONS 1H(γ, γ'), E=200-400 MeV; 2H(γ, γ'n), (γ, γ'p), E=200-400 MeV; measured Eγ, Ep, En, σ(E, θ). 1n(γ, γ'), E=200-400 MeV; deduced σ(E, θ). 1n deduced polarizabilities. Tagged photons.

doi: 10.1140/epja/i2002-10093-9
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2003WA01      Phys.Lett. B 553, 25 (2003)

D.P.Watts, J.Ahrens, J.R.M.Annand, R.Beck, D.Branford, P.Grabmayr, T.Hehl, J.D.Kellie, I.J.D.MacGregor, J.C.McGeorge, R.O.Owens

Three-nucleon mechanisms in photoreactions

NUCLEAR REACTIONS 12C(γ, 2np), E=150-800 MeV; measured Ep, missing energy distributions; deduced possible three-nucleon mechanism, other reaction mechanism features. Tagged photons. Comparison with microscopic many-body model predictions.

doi: 10.1016/S0370-2693(02)03186-6
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2003WE03      Eur.Phys.J. A 16, 275 (2003)

J.Weiss, P.Achenbach, R.Beck, V.Hejny, V.Kleber, M.Kotulla, B.Krusche, V.Kuhr, R.Leukel, V.Metag, V.M.Olmos de Leon, R.O.Owens, F.Rambo, A.Schmidt, U.Siodlaczek, H.Stroher, F.Wissmann, M.Wolf

Exclusive measurement of quasi-free η-photoproduction from deuterium

NUCLEAR REACTIONS 2H(γ, nX), (γ, pX), E=630-820 MeV; measured En, Ep, quasi-free η production σ; deduced reaction mechanism features.

doi: 10.1140/epja/i2002-10085-9
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2002BE29      Acta Phys.Pol. B33, 813 (2002)

R.Beck, R.Leukel, A.Schmidt, for the A2- and TAPS-Collaborations

New Results and Future Plans with Real Photons at MAMI

NUCLEAR REACTIONS 1H(polarized γ, π0), E=145-380 MeV; measured σ, σ(θ), photon asymmetry; deduced partial wave amplitudes. Tagged photons.


2002BR38      Phys.Rev. C66, 015208 (2002)

D.Branford, J.F.Arneil, J.A.MacKenzie, K.Fohl, J.Ahrens, J.R.M.Annand, R.Beck, S.Franczuk, P.Grabmayr, S.J.Hall, P.D.Harty, T.Hehl, J.D.Kellie, M.Liang, I.J.D.MacGregor, J.C.McGeorge, A.Natter, S.Oberkirsch, R.O.Owens, C.J.Y.Powrie, D.P.Watts, S.Wunderlich

Investigation of Δ-Medium Effects using the 4He(γ, π+n)3H and 4He(γ, π+p)nnn Reactions

NUCLEAR REACTIONS 4He(γ, π+n), (γ, π+p), E=250-400 MeV; measured missing energy, σ(E, θ) with polarized and unpolarized beams; 12C(γ, π+n), E=260-380 MeV; analyzed data; deduced Δ-medium effects. Tagged photons, comparisons with model predictions.

doi: 10.1103/PhysRevC.66.015208
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2002CA13      Phys.Rev. C65, 032202 (2002)

M.Camen, K.Kossert, F.Wissmann, J.Ahrens, H.-J.Arends, R.Beck, G.Caselotti, P.Grabmayr, P.D.Harty, O.Jahn, P.Jennewein, R.Kondratiev, M.I.Levchuk, V.Lisin, A.I.Lvov, J.C.McGeorge, A.Natter, V.Olmos de Leon, M.Schumacher, B.Seitz, F.Smend, A.Thomas, W.Weihofen, F.Zapadtka

Backward Spin Polarizability γπ of the Proton

NUCLEAR REACTIONS 1H(γ, γ), E=200-470 MeV; measured Compton scattering σ(θ=136°), pγ-coin. 1H deduced backward spin polarizability. Comparisons with model predictions, previous results.

doi: 10.1103/PhysRevC.65.032202
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetM0730.


2002HE08      Eur.Phys.J. A 13, 493 (2002)

V.Hejny, J.Weiss, P.Achenbach, J.Ahrens, J.R.M.Annand, R.Beck, M.Kotulla, B.Krusche, V.Kuhr, R.Leukel, I.J.D.MacGregor, V.Metag, R.Novotny, V.Olmos de Leon, F.Rambo, A.Schmidt, M.Schumacher, U.Siodlaczek, H.Stroher, F.Wissmann, M.Wolf

Threshold Enhancement in η Photoproduction from 2H and 4He

NUCLEAR REACTIONS 2H, 4He(γ, X), E ≈ 590-680 MeV; measured η meson production σ, σ(θ), momentum distributions; deduced enhancement relative to model prediction. Tagged photons.

doi: 10.1007/s10050-002-8779-0
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2002KO21      Phys.Rev.Lett. 88, 162301 (2002)

K.Kossert, M.Camen, F.Wissmann, J.Ahrens, J.R.M.Annand, H.-J.Arends, R.Beck, G.Caselotti, P.Grabmayr, O.Jahn, P.Jennewein, M.I.Levchuk, A.I.Lvov, J.C.McGeorge, A.Natter, V.Olmos de Leon, V.A.Petrunkin, G.Rosner, M.Schumacher, B.Seitz, F.Smend, A.Thomas, W.Weihofen, F.Zapadtka

Neutron Polarizabilities Investigated by Quasifree Compton Scattering from the Deuteron

NUCLEAR REACTIONS 2H(γ, n), E=200-400 MeV; measured Eγ, nγ-coin. 1n deduced polarizabilities.

doi: 10.1103/PhysRevLett.88.162301
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2002KO59      Phys.Rev.Lett. 89, 272001 (2002)

M.Kotulla, J.Ahrens, J.R.M.Annand, R.Beck, G.Caselotti, L.S.Fog, D.Hornidge, S.Janssen, B.Krusche, J.C.McGeorge, I.J.D.McGregor, K.Mengel, J.G.Messchendorp, V.Metag, R.Novotny, M.Pfeiffer, M.Rost, S.Sack, R.Sanderson, S.Schadmand, D.P.Watts

The Reaction γp → π0γ'p and the Magnetic Dipole Moment of the Δ+(1232) Resonance

NUCLEAR REACTIONS 1H(γ, γ'π0), E(cm)=1221-1331 MeV; measured missing mass, σ(E, θ); deduced Δ resonance dipole moment.

doi: 10.1103/PhysRevLett.89.272001
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2002KR02      Phys.Lett. 526B, 287 (2002)

B.Krusche, J.Ahrens, R.Beck, S.Kamalov, V.Metag, R.O.Owens, H.Stroher

Coherent π0-Photoproduction from Atomic Nuclei

NUCLEAR REACTIONS 12C, 40Ca, 93Nb, Pb(γ, π0), E=200-350 MeV; measured pion spectra, σ(θ), σ; deduced Δ-resonance medium modification. Comparisons with model predictions.

doi: 10.1016/S0370-2693(01)01503-9
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2002ME22      Phys.Rev.Lett. 89, 222302 (2002)

J.G.Messchendorp, S.Janssen, M.Kotulla, J.Ahrens, J.R.H.Annand, R.Beck, F.Bloch, G.Caselotti, L.Fog, D.Hornidge, B.Krusche, W.Langgartner, J.C.McGeorge, I.J.D.MacGregor, K.Mengel, V.Metag, R.Novotny, R.O.Owens, M.Pfeiffer, S.Sack, R.Sanderson, S.Schadmand

In-Medium Modifications of the ππ Interaction in Photon-Induced Reactions

NUCLEAR REACTIONS 1H, 12C, Pb(γ, 2π0X), (γ, π0π+X), (γ, π0π-X), E=400-460 MeV; measured two-pion mass distributions, σ(E); deduced in-medium modification features. Comparison with model predictions.

doi: 10.1103/PhysRevLett.89.222302
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2001GA28      Phys.Lett. 503B, 245 (2001)

G.Galler, V.Lisin, R.Kondratev, A.M.Massone, S.Wolf, J.Ahrens, H.-J.Arends, R.Beck, M.Camen, G.P.Capitani, P.Grabmayr, S.J.Hall, F.Harter, T.Hehl, P.Jennewein, K.Kossert, A.I.Lvov, C.Molinari, P.Ottonello, J.Peise, I.Preobrajenski, S.Proff, A.Robbiano, M.Sanzone, M.Schumacher, M.Schmitz, F.Wissmann

Compton Scattering by the Proton

NUCLEAR REACTIONS 1H(γ, γ'), E=250-800 MeV; measured recoil proton spectra, γ spectra, σ(θ); deduced multipole ratio for resonance production, proton backward spin polarizability. Tagged photons, large-acceptance spectrometer.

doi: 10.1016/S0370-2693(01)00231-3
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2001OL04      Eur.Phys.J. A 10, 207 (2001)

V.Olmos de Leon, F.Wissmann, P.Achenbach, J.Ahrens, H.-J.Arends, R.Beck, P.D.Harty, V.Hejny, P.Jennewein, M.Kotulla, B.Krusche, V.Kuhr, R.Leukel, J.C.McGeorge, V.Metag, R.Novotny, A.Polonsky, F.Rambo, A.Schmidt, M.Schumacher, U.Siodlaczek, H.Stroher, A.Thomas, J.Weiss, M.Wolf

Low-Energy Compton Scattering and the Polarizabilities of the Proton

NUCLEAR REACTIONS 1H(γ, γ'), E=55-165 MeV; measured Eγ, σ(θ). 1H deduced electromagnetic polarizabilities.

doi: 10.1007/s100500170132
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2001PO19      Phys.Rev. C64, 034602 (2001)

C.J.Y.Powrie, J.C.McGeorge, I.J.D.MacGregor, J.Ahrens, J.R.M.Annand, J.F.Arneil, R.Beck, D.Branford, S.Franczuk, D.I.Glazier, P.Grabmayr, S.J.Hall, T.Hehl, P.D.Harty, D.G.Ireland, J.D.Kellie, K.Livingston, F.A.Natter, S.Oberkirsch, R.O.Owens, J.Ryckebusch, M.Sauer, A.Settele, D.P.Watts

Polarized Photon Measurements of the 12C(γ(pol), pp) and 12C(γ(pol), pn) Reactions for Eγ = 160-350 MeV

NUCLEAR REACTIONS 12C(polarized γ, 2p), (polarized γ, np), E=160-350 MeV; measured parallel and perpendicular yields, photon asymmetry, σ(θ), missing energy dependence; deduced reaction mechanism features. Tagged photons. Comparison with model predictions.

doi: 10.1103/PhysRevC.64.034602
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetM0740.


2001SC51      Phys.Rev.Lett. 87, 232501 (2001)

A.Schmidt, P.Achenbach, J.Ahrens, H.J.Arends, R.Beck, A.M.Bernstein, V.Hejny, M.Kotulla, B.Krusche, V.Kuhr, R.Leukel, I.J.D.McGregor, J.C.McGeorge, V.Metag, V.M.Olmos de Leon, F.Rambo, U.Siodlaczek, H.Stroher, Th.Walcher, J.Weiss, F.Wissmann, M.Wolf

Test of Low-Energy Theorems for 1H(γ(pol), π0)1H in the Threshold Region

NUCLEAR REACTIONS 1H(polarized γ, π0), E=144-168 MeV; measured σ, σ(θ), photon asymmetry; deduced partial wave amplitudes. Tagged-photon beam.

doi: 10.1103/PhysRevLett.87.232501
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2001SI24      Eur.Phys.J. A 10, 365 (2001)

U.Siodlaczek, P.Achenbach, J.Ahrens, J.R.M.Annand, H.-J.Arends, R.Beck, R.Bilger, H.Clement, V.Hejny, M.Kotulla, B.Krusche, V.Kuhr, R.Leukel, J.C.McGeorge, V.Metag, R.Novotny, V.Olmos de Leon, F.Rambo, M.Schepkin, A.Schmidt, I.Seluzhenkov, H.Stroher, G.J.Wagner, Th.Walcher, J.Weiss, F.Wissmann, M.Wolf

Coherent and Incoherent π0 Photoproduction from the Deuteron

NUCLEAR REACTIONS 2H(γ, π0), (γ, π0n), E=140-306 MeV; measured missing energy spectra, σ(θ), σ. Tagged photons.

doi: 10.1007/s100500170120
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2001WE15      Eur.Phys.J. A 11, 371 (2001)

J.Weiss, P.Achenbach, J.Ahrens, J.R.M.Annand, R.Beck, V.Hejny, J.D.Kellie, V.Kleber, M.Kotulla, B.Krusche, V.Kuhr, R.Leukel, V.Metag, V.M.Olmos de Leon, F.Rambo, A.Schmidt, U.Siodlaczek, H.Stroher, F.Wissmann, M.Wolf

Exclusive Measurement of Coherent η-Photoproduction from the Deuteron

NUCLEAR REACTIONS 2H(γ, X), E=640-745 MeV; measured σ(θ) for η-photoproduction. Comparison with earlier data and with calculations.

doi: 10.1007/s100500170047
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2001WO09      Nucl.Phys. A690, 310c (2001)

S.Wolf, V.Lisin, R.Kondratiev, A.M.Massone, G.Galler, J.Ahrens, H.-J.Arends, R.Beck, M.Camen, G.P.Capitani, P.Grabmayr, S.J.Hall, F.Harter, T.Hehl, P.Jennewein, K.Kossert, A.I.Lvov, C.Molinari, P.Ottonello, J.Peise, I.Preobrajensky, S.Proff, A.Robbiano, M.Sanzone, M.Schumacher, M.Schmitz, F.Wissmann

Structure of the Nucleon Investigated by Compton Scattering

NUCLEAR REACTIONS 1H(γ, γ'), E ≈ 200-800; measured σ(θ); deduced nucleon structure parameters.

doi: 10.1016/S0375-9474(01)00965-4
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2001WO12      Eur.Phys.J. A 12, 231 (2001)

S.Wolf, V.Lisin, R.Kondratiev, A.M.Massone, G.Galler, J.Ahrens, H.-J.Arends, R.Beck, M.Camen, G.P.Capitani, P.Grabmayr, F.Harter, T.Hehl, P.Jennewein, K.Kossert, A.I.Lvov, C.Molinari, P.Ottonello, R.O.Owens, J.Peise, I.Preobrajensky, S.Proff, A.Robbiano, M.Sanzone, M.Schumacher, M.Schmitz, F.Wissmann

Compton Scattering by the Proton using a Large-Acceptance Arrangement

NUCLEAR REACTIONS 1H(γ, γ), E ≈ 250-800 MeV; measured Eγ, σ(θ); deduced backward spin polarizability. Comparison with model predictions. Tagged photon beam, large-acceptance experiment.

doi: 10.1007/s100500170031
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2000BE05      Phys.Rev. C61, 035204 (2000)

R.Beck, H.P.Krahn, J.Ahrens, J.R.M.Annand, H.J.Arends, G.Audit, A.Braghieri, N.d'Hose, D.Drechsel, O.Hanstein, J.C.McGeorge, R.O.Owens, P.Pedroni, T.Pinelli, G.Tamas, L.Tiator, Th.Walcher

Determination of the E2/M1 Ratio in the γN → Δ(1232) Transition from a Simultaneous Measurement of p(γ(pol), p)π0 and p(γ(pol), π+)n

NUCLEAR REACTIONS 1H(polarized γ, π0), (polarized γ, π+), E=270-420 MeV; measured σ(θ), asymmetry; deduced Δ resonance associated E2/M1 ratio. Tagged photons.

doi: 10.1103/PhysRevC.61.035204
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2000BR01      Phys.Rev. C61, 014603 (2000)

D.Branford, J.A.MacKenzie, F.X.Lee, J.Ahrens, J.R.M.Annand, R.Beck, G.E.Cross, T.Davinson, P.Grabmayr, S.J.Hall, P.D.Harty, T.Hehl, D.G.Johnstone, J.D.Kellie, T.Lamparter, M.Liang, I.J.D.MacGregor, J.C.McGeorge, R.O.Owens, M.Sauer, R.Schneider, A.C.Shotter, K.Spaeth, D.P.Watts, P.J.Woods, L.E.Wright, T.T.Yau

Nuclear Pion Photoproduction in the Δ Resonance Region

NUCLEAR REACTIONS 12C(γ, π+n), E=260, 300, 340, 380 MeV; measured σ(θ1, θ2), missing energy spectra; deduced Δ resonance role. DWIA analysis. Tagged photons.

doi: 10.1103/PhysRevC.61.014603
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2000KL12      Eur.Phys.J. A 9, 1 (2000)

V.Kleber, P.Achenbach, J.Ahrens, R.Beck, V.Hejny, J.D.Kellie, M.Kotulla, B.Krusche, V.Kuhr, R.Leukel, V.Metag, R.Novotny, V.Olmos de Leon, R.O.Owens, F.Rambo, A.Schmidt, M.Schumacher, U.Siodlaczek, H.Stroher, J.Weiss, F.Wissmann, M.Wolf

Double-π0 Photoproduction from the Deuteron

NUCLEAR REACTIONS 2H(γ, 2π0X), E=200-820 MeV; measured two-pion production σ, invariant mass distributions. 1n(γ, 2π0X), E=400-820 MeV; deduced two-pion production σ. Tagged photons.

doi: 10.1007/s100500070047
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2000SI10      Nucl.Phys. A663-664, 428c (2000)

U.Siodlaczek, P.Achenbach, J.Ahrens, H.-J.Arends, R.Beck, R.Bilger, H.Clement, V.Hejny, M.Kotulla, B.Krusche, V.Kuhr, R.Leukel, V.Metag, R.Novotny, V.Olmos de Leon, F.Rambo, M.Schepkin, A.Schmidt, M.Schumacher, H.Stroher, G.J.Wagner, Th.Walcher, J.Weiss, F.Wissmann, M.Wolf

Measurement of Coherent and Incoherent π0 Photoproduction Off the Deuteron with Tagged Photons Up to the Δ Region

NUCLEAR REACTIONS 2H(γ, π0), E=130-306 MeV; measured pions missing energy spectra, σ(θ). Tagged photons.

doi: 10.1016/S0375-9474(99)00675-2
Citations: PlumX Metrics


2000SI39      Eur.Phys.J. A 9, 309 (2000)

U.Siodlaczek, P.Achenbach, J.Ahrens, H.-J.Arends, R.Beck, R.Bilger, H.Clement, V.Hejny, J.D.Kellie, M.Kotulla, B.Krusche, V.Kuhr, R.Leukel, J.C.McGeorge, V.Metag, R.Novotny, V.Olmos de Leon, F.Rambo, M.Schepkin, A.Schmidt, H.Stroher, G.J.Wagner, Th.Walcher, J.Weiss, F.Wissmann, M.Wolf

Search for Narrow Dibaryon Resonances in Neutral Pion Photoproduction from the Deuteron

NUCLEAR REACTIONS 2H(γ, π0), E=140-300 MeV; measured σ(θ, E); deduced absence of resonances in the 2-baryon system.

doi: 10.1007/s100500070015
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2000WA20      Phys.Rev. C62, 014616 (2000)

D.P.Watts, I.J.D.MacGregor, J.Ahrens, J.R.M.Annand, R.Beck, D.Branford, P.Grabmayr, S.J.Hall, P.D.Harty, T.Hehl, J.D.Kellie, T.Lamparter, M.Liang, J.A.MacKenzie, S.J.McAllister, J.C.McGeorge, R.O.Owens, M.Sauer, R.Schneider, G.J.Wagner, T.T.-H.Yau

The 12C(γ, NN) Reaction Studied Over a Wide Kinematic Range

NUCLEAR REACTIONS 12C(γ, np), (γ, 2p), E=150-700 MeV; measured missing energy, recoil momentum distributions; deduced role of short-range correlations, other reaction mechanism features. Tagged photons. Comparisons with model predictions.

doi: 10.1103/PhysRevC.62.014616
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2000WI05      Nucl.Phys. A663-664, 397c (2000)

F.Wissmann, P.Achenbach, J.Ahrens, H.-J.Arends, R.Beck, R.Bilger, M.Camen, G.P.Capitani, G.Caselotti, G.Galler, P.Grabmayr, F.Harter, T.Hehl, E.Heid, V.Hejny, O.Jahn, P.Jennewein, R.Kondratev, K.Kossert, M.Kotulla, B.Krusche, V.Kuhr, M.Lang, R.Leukel, M.I.Levchuk, V.Lisin, A.I.Lvov, A.M.Massone, V.Metag, A.Natter, R.Novotny, V.Olmos de Leon, P.Ottonello, J.Peise, A.Polonsky, I.Preobrashenskij, S.Proff, F.Rambo, A.Robbiano, D.Rosenkranz, M.Sanzone, E.Schilling, A.Schmidt, M.Schumacher, B.Seitz, U.Siodlaczek, F.Smend, H.Stroher, H.Vorwerk, Th.Walcher, J.Weiss, M.Wolf, S.Wolf, F.Zapadtka

Compton Scattering from the Free and Bound Proton Above π-Threshold

NUCLEAR REACTIONS 1,2H(γ, γ'X), E=200-800 MeV; measured σ(θ).

doi: 10.1016/S0375-9474(99)00626-0
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2000WO12      Eur.Phys.J. A 9, 5 (2000)

M.Wolf, J.Ahrens, R.Beck, V.Hejny, J.D.Kellie, M.Kotulla, B.Krusche, V.Kuhr, R.Leukel, V.Metag, J.C.Nacher, R.Novotny, V.Olmos de Leon, R.O.Owens, F.Rambo, A.Schmidt, M.Schumacher, U.Siodlaczek, H.Stroher, J.Weiss, F.Wissmann

Photoproduction of Neutral Pion Pairs from the Proton

NUCLEAR REACTIONS 1H(γ, 2π0X), E=300-820 MeV; measured two-pion production σ, invariant mass distributions. Tagged photons.

doi: 10.1007/s100500070048
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1999DO30      Phys.Rev. C60, 064622 (1999)

S.M.Dolfini, R.O.Alarcon, H.Arenhovel, R.Beck, A.M.Bernstein, W.Bertozzi, W.Boeglin, S.Boffi, J.R.Comfort, D.Dale, G.Dodson, K.Dow, M.B.Epstein, M.Farkhondeh, S.Gilad, J.Gorgen, M.Holtrop, D.Jordan, W.Kim, S.Kowalski, R.Laszewski, J.Mandeville, D.J.Margaziotis, D.Martinez, T.McIlvain, R.Miskimen, C.Papanicolas, M.Radici, D.Tieger, W.Turchinetz, C.E.Vellidis, L.Weinstein, S.Williamson

Out-of-Plane Measurements of the Fifth Response Function of the Exclusive Electronuclear Response

NUCLEAR REACTIONS 2H, 12C(polarized e, e'p), E=560 MeV; measured coincidence yields, σ(θ), beam asymmetry; deduced unpolarized σ, fifth response function f'(LT). Magnetic spectrometers, out-of-plane measurements. DWIA calculations.

doi: 10.1103/PhysRevC.60.064622
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1999FR32      Phys.Lett. 450B, 332 (1999)

S.Franczuk, I.J.D.MacGregor, J.Ahrens, J.R.M.Annand, J.F.Arneil, R.Beck, D.Branford, P.Grabmayr, S.J.Hall, T.Hehl, P.D.Harty, D.G.Ireland, J.D.Kellie, K.Livingston, J.C.McGeorge, F.A.Natter, S.Oberkirsch, R.O.Owens, C.J.Y.Powrie, J.Ryckebusch, M.Sauer, A.Settele, D.P.Watts

12C(γ(pol), pn) Photon Asymmetry for Eγ = 180-340 MeV

NUCLEAR REACTIONS 12C(polarized γ, np), E=180-340 MeV; measured proton, neutron spectra, angular distributions; deduced photon asymmetry. Tagged photons. Comparison with deuterium target data.

doi: 10.1016/S0370-2693(99)00184-7
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1999HE27      Eur.Phys.J. A 6, 83 (1999)

V.Hejny, P.Achenbach, J.Ahrens, R.Beck, S.J.Hall, M.Kotulla, B.Krusche, V.Kuhr, R.Leukel, V.Metag, R.Novotny, V.Olmos de Leon, R.O.Owens, F.Rambo, A.Schmidt, M.Schumacher, U.Siodlaczek, H.Stroher, F.Wissmann, J.Weiss, M.Wolf

Near Threshold Photoproduction of η Mesons from 4He

NUCLEAR REACTIONS 4He(γ, X), E=threshold-818 MeV; measured η meson exclusive and inclusive production σ, σ(θ); deduced neutron, proton, coherent contributions. Tagged photons.

doi: 10.1007/s100500050320
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1999KR22      Eur.Phys.J. A 6, 309 (1999)

B.Krusche, J.Ahrens, R.Beck, M.Fuchs, S.J.Hall, F.Harter, J.D.Kellie, V.Metag, M.Robig-Landau, H.Stroher

Single and Double π0-Photoproduction from the Deuteron

NUCLEAR REACTIONS 2H(γ, π0), (γ, π0X), (γ, 2π0), E=200-792 MeV; 1H(γ, π0), E=650-790 MeV; measured σ, σ(θ); deduced final state interaction features. Comparisons with model predictions.

doi: 10.1007/s100500050349
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1999MC06      Phys.Rev. C60, 044610 (1999)

S.J.McAllister, J.C.McGeorge, I.J.D.MacGregor, J.R.M.Annand, S.J.Hall, P.D.Harty, J.D.Kellie, G.J.Miller, R.O.Owens, D.P.Watts, T.T.-H.Yau, D.Branford, J.A.MacKenzie, M.Liang, P.Grabmayr, T.Hehl, T.Lamparter, M.Sauer, R.Schneider, J.Ahrens, R.Beck

The (γ, pd) Reaction in 12C

NUCLEAR REACTIONS 12C(γ, pd), E=150-400 MeV; measured particle spectra, σ(θ), recoil momentum distributions; deduced reaction mechanism features. Tagged photon beam.

doi: 10.1103/PhysRevC.60.044610
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1999RA29      Nucl.Phys. A660, 69 (1999)

F.Rambo, P.Achenbach, J.Ahrens, H.-J.Arends, R.Beck, S.J.Hall, V.Hejny, P.Jennewein, S.S.Kamalov, M.Kotulla, B.Krusche, V.Kuhr, R.Leukel, V.Metag, R.Novotny, V.Olmos de Leon, A.Schmidt, M.Schumacher, U.Siodlaczek, F.Smend, H.Stroher, J.Weiss, F.Wissmann, M.Wolf

Coherent π0 Photoproduction from 4He

NUCLEAR REACTIONS 4He(γ, π0), E=200-400 MeV; measured σ, σ(θ); deduced in-medium modification of Δ resonance parameters. Tagged coherent bremsstrahlung beam, DWIA analysis.

doi: 10.1016/S0375-9474(99)00383-8
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1999WA20      Few-Body Systems 26, 213 (1999)

S.Wartenberg, J.Ahrens, J.Annand, H.J.Arends, G.Audit, R.Beck, A.Braghieri, N.d'Hose, S.Hall, E.Heid, V.Isbert, J.D.Kellie, H.P.Krahn, J.C.McGeorge, R.O.Owens, A.Panzeri, P.Pedroni, T.Pinelli, G.Tamas, A.Thomas

Photon Asymmetry of Deuteron Photodisintegration between 160 and 410 MeV

NUCLEAR REACTIONS 2H(polarized γ, p), E=160-410 MeV; measured σ(θ), photon asymmetry. Comparison with previous data, model predictions. Tagged photon beam.

doi: 10.1007/s006010050115
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1999WI15      Nucl.Phys. A660, 232 (1999)

F.Wissmann, V.Kuhr, O.Jahn, H.Vorwerk, P.Achenbach, J.Ahrens, H.-J.Arends, R.Beck, M.Camen, G.Caselotti, E.Heid, V.Hejny, P.Jennewein, R.Kondratev, K.Kossert, M.Kotulla, B.Krusche, M.Lang, R.Leukel, M.I.Levchuk, V.Lisin, V.Metag, R.Novotny, V.Olmos de Leon, A.Polonsky, I.Preobrashenskij, F.Rambo, D.Rosenkranz, E.Schilling, A.Schmidt, M.Schumacher, B.Seitz, U.Siodlaczek, H.Stroher, A.Thomas, Th.Walcher, J.Weiss, M.Wolf, F.Zapadtka

Compton Scattering from the Free and Bound Proton at Backward Angles Above π-Threshold

NUCLEAR REACTIONS 1H(γ, γ'), E=200-410 MeV; 2H(γ, γ'), E=200-290 MeV; measured Eγ, σ(θ); deduced proton spin polarizabilities. Dispersion theory.

doi: 10.1016/S0375-9474(99)00419-4
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1999ZA16      Phys.Rev. C60, 055201 (1999)

A.Zabrodin, G.Audit, R.Beck, A.Braghieri, N.D'Hose, S.J.Hall, J.D.Kellie, M.MacCormick, L.Y.Murphy, A.Panzeri, P.Pedroni, T.Pinelli, G.Tamas

Invariant Mass Distributions of the γn → pπ-π0 Reaction

NUCLEAR REACTIONS 1n(γ, pπ0π-), E=500-800 MeV; measured σ(E), invariant mass distributions; deduced reaction mechanism features. Deuterium target.

doi: 10.1103/PhysRevC.60.055201
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1998HA01      Phys.Rev. C57, 123 (1998)

P.D.Harty, I.J.D.MacGregor, J.Ahrens, J.R.M.Annand, I.Anthony, R.Beck, D.Branford, G.E.Cross, T.Davinson, P.Grabmayr, S.J.Hall, T.Hehl, J.D.Kellie, T.Lamparter, J.A.MacKenzie, J.C.McGeorge, G.J.Miller, R.O.Owens, M.Sauer, R.Schneider, K.Spaeth

Investigation of Multiparticle Final States in 12C Photoreactions

NUCLEAR REACTIONS 12C(γ, np), (γ, 2p), (γ, 3p), (γ, pπ), (γ, 2pπ), E=250-600 MeV; measured σ vs missing energy; deduced reaction mechanism features. Tagged photons. Valencia model calculations.

doi: 10.1103/PhysRevC.57.123
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1998HO20      Phys.Rev. C58, 3205 (1998)

M.Holtrop, D.Jordan, T.McIlvain, R.Alarcon, R.Beck, W.Bertozzi, V.Bhushan, W.Boeglin, J.P.Chen, D.Dale, G.Dodson, S.Dolfini, K.Dow, J.Dzengeleski, M.B.Epstein, M.Farkhondeh, S.Gilad, J.Gorgen, K.Joo, J.Kelsey, W.Kim, R.Laszewski, R.Lourie, J.Mandeville, D.J.Margaziotis, D.Martinez, R.Miskimen, C.Papanicolas, S.Penn, W.Sapp, A.J.Sarty, D.Tieger, C.Tschalaer, W.Turchinetz, G.Warren, L.Weinstein, S.Williamson

Measurement of the Interference Structure Function RLT for the 12C(e, e'p) Reaction in the Quasielastic Region

NUCLEAR REACTIONS 12C(e, e'p), E=576 MeV; measured ep-coin, σ(E, θ(e), θ(p)); deduced interference structure function R(LT) vs missing energy. HF-RPA calculations.

doi: 10.1103/PhysRevC.58.3205
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1998KR13      Phys.Lett. 432B, 45 (1998)

A.Kraus, O.Selke, F.Wissmann, J.Ahrens, H.-J.Arends, R.Beck, G.Galler, M.-Th.Hutt, B.Korfgen, J.Peise, M.Schumacher, F.Smend, R.Wichmann

Angular and Polarization Dependence of Compton Scattering from 4He in the Δ-Resonance Region

NUCLEAR REACTIONS 4He(polarized γ, γ'), E=150-500 MeV; measured σ(Eγ, θ), asymmetry; deduced Δ-hole model failure at large scattering angles. Polarized tagged photons.

doi: 10.1016/S0370-2693(98)00635-2
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1998MA02      Phys.Rev.Lett. 80, 245 (1998)

I.J.D.MacGregor, T.T-H.Yau, J.Ahrens, J.R.M.Annand, R.Beck, D.Branford, P.Grabmayr, S.J.Hall, P.D.Harty, T.Hehl, J.D.Kellie, T.Lamparter, M.Liang, J.A.MacKenzie, S.McAllister, J.C.McGeorge, R.O.Owens, J.Ryckebusch, M.Sauer, R.Schneider, D.P.Watts

Mechanisms in the 12C(γ, pn) and (γ, pp) Reactions

NUCLEAR REACTIONS 12C(γ, np), (γ, 2p), E=120-400 MeV; measured σ(Eγ, θ(p)); deduced Δ-resonance dependence, reaction mechanism features.

doi: 10.1103/PhysRevLett.80.245
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1998RA12      Phys.Rev. C58, 489 (1998)

F.Rambo, J.Ahrens, H.-J.Arends, R.Beck, G.Galler, J.D.Kellie, H.-P.Krahn, A.Kraus, U.Ludwig, J.Peise, A.Schmidt, M.Schumacher, F.Smend, F.Wissmann, S.Wolf

Enhancement of the Linear Polarization of Coherent Bremsstrahlung by Collimation of the Photon Beam

NUCLEAR REACTIONS 4He(polarized γ, π0), E=200-400 MeV bremsstrahlung; analyzed asymmetry; deduced beam polarization, collimation effect. Coherent bremsstrahlung from diamond crystals.

doi: 10.1103/PhysRevC.58.489
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1998YA05      Eur.Phys.J. A 1, 241 (1998)

T.T.-H.Yau, I.J.D.MacGregor, J.Ahrens, J.R.M.Annand, R.Beck, D.Branford, P.Grabmayr, S.J.Hall, P.D.Harty, T.Hehl, D.G.Ireland, J.D.Kellie, T.Lamparter, K.Livingston, M.Liang, J.A.MacKenzie, S.McAllister, J.C.McGeorge, R.O.Owens, M.Sauer, R.Schneider, D.P.Watts

The Angular Distribution of the 12C(γ, pn) Reaction for E(γ) = 120 - 150 MeV

NUCLEAR REACTIONS 12C(γ, np), E=120-150 MeV; measured σ(θ(n), θ(p)); deduced pion-, rho-exchange roles. Comparison with other reactions.

doi: 10.1007/s100500050055
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1997BE04      Phys.Rev.Lett. 78, 606 (1997); Erratum Phys.Rev.Lett. 79, 4515 (1997)

R.Beck, H.P.Krahn, J.Ahrens, H.J.Arends, G.Audit, A.Braghieri, N.d'Hose, S.J.Hall, V.Isbert, J.D.Kellie, I.J.D.MacGregor, P.Pedroni, T.Pinelli, G.Tamas, Th.Walcher, S.Wartenberg

Measurement of the E2/M1 Ratio in the N → Δ Transition using the Reaction p(γ(pol), p)π0

NUCLEAR REACTIONS 1H(polarized γ, π0), E=270-420 MeV; measured σ(θ), photon asymmetries, σ(θp); deduced E2/M1 ratio in N → δ transition.

doi: 10.1103/PhysRevLett.78.606
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1997BE08      Phys.Rev. C55, 1509 (1997)

A.M.Bernstein, E.Shuster, R.Beck, M.Fuchs, B.Krusche, H.Merkel, H.Stroher

Observation of a Unitary Cusp in the Threshold γp → π0p Reaction

NUCLEAR REACTIONS 1H(γ, π0), E=threshold-270 MeV; analyzed σ(E), σ(θ); deduced s-, p-wave multipoles, unitary cusp. Tagged photon beam. Minimal model assumptions.

doi: 10.1103/PhysRevC.55.1509
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1997BE56      Phys.Rev.Lett. 79, 4510 (1997)

R.Beck, H.-P.Krahn

Beck and Krahn Reply:

doi: 10.1103/PhysRevLett.79.4510
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1997BE57      Phys.Rev.Lett. 79, 4512 (1997)

R.Beck, H.-P.Krahn

Beck and Krahn Reply:

doi: 10.1103/PhysRevLett.79.4512
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1997HA28      Phys.Lett. 401B, 229 (1997)

F.Harter, J.Ahrens, R.Beck, B.Krusche, V.Metag, M.Schmitz, H.Stroher, Th.Walcher, M.Wolf

Two Neutral Pion Photoproduction Off the Proton between Threshold and 800 MeV

NUCLEAR REACTIONS 1H(γ, 2π0), E=threshold-800 MeV; measured two-pion photoproduction σ(E); deduced Δ(1232)-resonance role as intermediate state.

doi: 10.1016/S0370-2693(97)00423-1
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1997HU08      Nucl.Phys. A620, 385 (1997)

A.Hunger, J.Peise, A.Robbiano, J.Ahrens, I.Anthony, H.-J.Arends, R.Beck, G.P.Capitani, B.Dolbilkin, H.Falkenberg, G.Galler, S.J.Hall, J.D.Kellie, R.Kondratev, R.Kordsmeier, V.Lisin, A.I.L'vov, G.J.Miller, C.Molinari, P.Ottonello, A.R.Reolon, M.Sanzone, M.Schmitz, M.Schneider, M.Schumacher, O.Selke, Th.Walcher, F.Wissmann, S.Wolf, A.Zucchiatti

Compton Scattering by the Proton Through θ(cms) = 75° and 90° in the Δ-Resonance Region

NUCLEAR REACTIONS 1H(γ, γ), E=200-500 MeV; measured Compton scattering σ(θ); deduced multipole distribution. Dispersion relations. Δ-resonance.

doi: 10.1016/S0375-9474(97)00184-X
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1997KR13      Phys.Rev.Lett. 79, 3834 (1997)

A.Kraus, O.Selke, F.Rambo, G.Galler, M.Schumacher, F.Smend, R.Wichmann, S.Wolf, J.Ahrens, H.-J.Arends, R.Beck, J.Peise

Beam Asymmetry of Coherent π0 Photoproduction on 4He in the Δ(1232) Range Measured using Coherent Bremsstrahlung

NUCLEAR REACTIONS 4He(polarized γ, π0), E=200-500 MeV bremsstrahlung; measured π0 photoproduction σ(θ) beam asymmetry; deduced beam polarization, collimation effect.

doi: 10.1103/PhysRevLett.79.3834
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1997LI30      Phys.Lett. 411B, 244 (1997)

M.Liang, D.Branford, T.Davinson, D.Johnstone, J.A.MacKenzie, A.C.Shotter, J.R.M.Annand, S.J.Hall, P.D.Harty, J.D.Kellie, I.J.D.MacGregor, J.C.McGeorge, G.J.Miller, R.O.Owens, T.Yau, P.Grabmayr, T.Hehl, J.Leypoldt, T.Lamparter, A.Mondry, M.Sauer, R.Schneider, K.Spaeth, J.Ahrens, R.Beck

12C(γ, π+n) and 12C(γ, π+p) Reaction Across the Δ Resonance Region

NUCLEAR REACTIONS 12C(γ, nπ+), (γ, pπ+), E=150-790 MeV bremsstrahlung; measured σ(θ, Eγ, Eπ); deduced final state interactions. Valencia model.

doi: 10.1016/S0370-2693(97)01005-8
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1997MA11      Phys.Rev. C55, 1033 (1997)

M.Mac Cormick, J.Habermann, J.Ahrens, G.Audit, R.Beck, A.Braghieri, G.Galler, N.d'Hose, V.Isbert, P.Pedroni, T.Pinelli, G.Tamas, S.Wartenberg, A.Zabrodin

Total Photoabsorption Cross Section for 4He from 200 to 800 MeV

NUCLEAR REACTIONS 4He(γ, X), E=200-800 MeV; measured total photoabsorption σ(E).

doi: 10.1103/PhysRevC.55.1033
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1997ZA02      Phys.Rev. C55, R1617 (1997)

A.Zabrodin, G.Audit, R.Beck, A.Braghieri, N.D'Hose, B.Dolbilkin, S.J.Hall, V.Isbert, L.Y.Murphy, P.Pedroni, T.Pinelli, G.Tamas, S.Wartenberg

Total Cross Section Measurement of the γn → p π-π0 Reaction

NUCLEAR REACTIONS 1n(γ, pX), E=450-800 MeV; measured σ(E) for double pion (π-π0) production.

doi: 10.1103/PhysRevC.55.R1617
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1996CR05      Nucl.Phys. A603, 303 (1996)

R.Crawford, J.Ahrens, S.Altieri, J.R.M.Annand, I.Anthony, G.Audit, R.Beck, A.Braghieri, N.D'Hose, S.Hall, V.Isbert, J.D.Kellie, S.Kerhoas, M.Mac Cormick, J.C.MacGeorge, R.Medaglia, G.J.Miller, L.Y.Murphy, R.O.Owens, P.Pedroni, T.Pinelli, G.Tamas, P.A.Wallace

Two-Body Photodisintegration of the Deuteron from 100 to 800 MeV

NUCLEAR REACTIONS 2H(γ, p), E=200-800 MeV; measured σ(θ), σ. Model comparison.

doi: 10.1016/0375-9474(96)80004-B
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1996FU04      Phys.Lett. 368B, 20 (1996)

M.Fuchs, J.Ahrens, G.Anton, R.Averbeck, R.Beck, A.M.Bernstein, A.R.Gabler, F.Harter, P.D.Harty, S.Hlavac, B.Krusche, I.J.D.MacGregor, V.Metag, R.Novotny, R.O.Owens, J.Peise, M.Robig-Landau, A.Schubert, R.S.Simon, H.Stroher, V.Tries

Neutral Pion Photoproduction from the Proton Near Threshold

NUCLEAR REACTIONS 1H(γ, π0), E=140-270 MeV; measured σ(θ), σ(E); deduced s-, p-wave multipoles vs E. Tagged photon beam. Low energy theorem, chiral perturbation theory analyses.

doi: 10.1016/0370-2693(95)01488-8
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1996HA17      Phys.Lett. 380B, 247 (1996)

P.D.Harty, I.J.D.MacGregor, P.Grabmayr, J.Ahrens, J.R.M.Annand, I.Anthony, R.Beck, D.Branford, G.E.Cross, T.Davinson, S.J.Hall, T.Hehl, J.D.Kellie, T.Lamparter, J.A.MacKenzie, J.C.McGeorge, G.J.Miller, R.O.Owens, M.Sauer, R.Schneider, K.Spaeth

The Contribution of 2N Photon Absorption in 12C(γ, 2N) Reactions for E(γ) = 150-400 MeV

NUCLEAR REACTIONS 12C(γ, np), (γ, 2p), E=150-400 MeV; measured yield vs missing energy, recoil momentum spectra; deduced photon absorption mechanism.

doi: 10.1016/0370-2693(96)00508-4
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1996JO09      Phys.Rev.Lett. 76, 1579 (1996)

D.Jordan, T.McIlvain, R.Alarcon, R.Beck, W.Bertozzi, V.Bhushan, W.Boeglin, J.P.Chen, D.Dale, G.Dodson, S.Dolfini, K.Dow, J.Dzengeleski, M.B.Epstein, M.Farkhondeh, S.Gilad, J.Gorgen, M.Holtrop, K.Joo, J.Kelsey, W.Kim, R.Laszewski, R.Lourie, J.Mandeville, D.Margaziotis, D.Martinez, R.Miskimen, C.N.Papanicolas, S.Penn, W.Sapp, A.J.Sarty, D.Tieger, C.Tschalaer, W.Turchinetz, G.Warren, L.Weinstein, S.Williamson

Measurement of the Longitudinal, Transverse, and Longitudinal-Transverse Structure Functions in the 2H(e, e'p)n Reaction

NUCLEAR REACTIONS 2H(e, e'p), E=577, 292 MeV; measured σ(θ(e'), θ(np)) vs energy transfer; deduced longitudinal, transverse, longitudinal-transverse interference structure function.

doi: 10.1103/PhysRevLett.76.1579
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1996LA15      Z.Phys. A355, 1 (1996)

Th.Lamparter, J.Ahrens, J.R.M.Annand, I.Anthony, R.Beck, D.Branford, G.E.Cross, T.Davinson, P.Grabmayr, S.J.Hall, P.D.Harty, T.Hehl, J.D.Kellie, I.J.D.MacGregor, J.A.MacKenzie, J.C.McGeorge, G.J.Miller, R.O.Owens, M.Sauer, R.Schneider, K.Spaeth, G.J.Wagner

On Photonuclear Reaction Mechanisms at Intermediate Energies

NUCLEAR REACTIONS 12C(γ, np), (γ, 2p), E=114-600 MeV; measured missing energy spectra. Valencia model, Monte Carlo simulations.

doi: 10.1007/s002180050069
Citations: PlumX Metrics


1996MA01      Phys.Rev. C53, 41 (1996)

M.Mac Cormick, G.Audit, N.d'Hose, L.Ghedira, V.Isbert, S.Kerhoas, L.Y.Murphy, G.Tamas, P.A.Wallace, S.Altieri, A.Braghieri, P.Pedroni, T.Pinelli, J.Ahrens, R.Beck, J.R.M.Annand, R.A.Crawford, J.D.Kellie, I.J.D.MacGregor, B.Dolbilkin, A.Zabrodin

Total Photoabsorption Cross Sections for 1H, 2H, and 3He from 200 to 800 MeV

NUCLEAR REACTIONS 1,2H, 3He(γ, X), E=200-800 MeV; measured total photoabsorption σ(E); deduced nucleon resonance changes vs target mass.

doi: 10.1103/PhysRevC.53.41
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetM0519.


1996MA20      Phys.Rev. C54, R6 (1996)

J.A.MacKenzie, D.Branford, J.Ahrens, J.R.M.Annand, R.Beck, G.E.Cross, T.Davinson, P.Grabmayr, S.J.Hall, P.D.Harty, T.Hehl, D.G.Johnstone, J.D.Kellie, T.Lamparter, M.Liang, I.J.D.MacGregor, J.C.McGeorge, R.O.Owens, M.Sauer, R.Schneider, A.C.Shotter, K.Spaeth, P.J.Woods, T.Yau

Quasifree π+ Production Studied using the 12C(γ, π+n)11B Reaction in the Δ(1232) Resonance Region

NUCLEAR REACTIONS 12C(γ, nπ+), E=280-320 MeV; measured σ(θ(π), θ(n)). Model comparison.

doi: 10.1103/PhysRevC.54.R6
Citations: PlumX Metrics


1996MO04      Phys.Lett. 371B, 181 (1996)

C.Molinari, P.Ottonello, A.Robbiano, M.Sanzone, A.Zucchiatti, G.P.Capitani, A.R.Reolon, H.Falkenberg, A.Hunger, R.Kordsmeier, M.Schumacher, J.Ahrens, H.J.Arends, R.Beck, J.Peise, F.Wissmann, B.Dolbilkin, R.Kondratev, V.Lisin, I.Anthony, J.D.Kellie, S.J.Hall, G.J.Miller

Scattering of Photons by the Proton Through θ(cms) = 90° in the Δ-Resonance Region

NUCLEAR REACTIONS 1H(γ, γ), E=250-500 MeV; measured σ(θγ), recoil proton spectra. Dispersion theories comparison.

doi: 10.1016/0370-2693(96)00020-2
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1996PE19      Phys.Lett. 384B, 37 (1996)

J.Peise, A.Hunger, J.Ahrens, I.Anthony, H.-J.Arends, R.Beck, G.P.Capitani, B.Dolbilkin, H.Falkenberg, S.J.Hall, P.Jennewein, J.D.Kellie, R.Kondratev, R.Kordsmeier, V.Lisin, A.I.Lvov, G.J.Miller, C.Molinari, A.R.Reolon, A.Robbiano, M.Sanzone, M.Schmitz, M.Schneider, M.Schumacher, O.Selke, Th.Walcher, F.Wissmann

Compton Scattering by the Proton Through θ(cms) = 75° in the Δ-Resonance Region

NUCLEAR REACTIONS 1H(γ, γ), E=200-410 MeV; measured Compton scattering σ(θ); deduced Δ-photo excitation reduced M1 strength.

doi: 10.1016/0370-2693(96)00709-5
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1996RO06      Phys.Lett. 373B, 45 (1996)

M.Robig-Landau, J.Ahrens, G.Anton, R.Averbeck, R.Beck, M.Fuchs, A.R.Gabler, F.Harter, P.D.Harty, V.Hejny, B.Krusche, I.J.D.MacGregor, J.C.McGeorge, V.Metag, R.Novotny, J.Peise, A.Schubert, R.S.Simon, H.Stroher

Near Threshold Photoproduction of η-mesons from Complex Nuclei

NUCLEAR REACTIONS 12C, 40Ca, 93Nb, Pb(γ, X), E=790 MeV; measured total, differential σ for η production; deduced absorption by nucleon σ, length in nuclear matter.

doi: 10.1016/0370-2693(96)00125-6
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1996SE02      Phys.Lett. 369B, 207 (1996)

O.Selke, A.Hunger, A.Kraus, M.Schumacher, R.Wichmann, J.Ahrens, H.J.Arends, R.Beck, J.Peise, M.Schneider, F.Wissmann

Compton Scattering from 4He in the Δ(1232) Resonance Region

NUCLEAR REACTIONS 4He(γ, γ), E=120-510 MeV; measured Compton scattering σ(θ). Schematic model analysis.

doi: 10.1016/0370-2693(95)01580-9
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1996WI10      Z.Phys. A355, 169 (1996)

R.Wichmann, J.Ahrens, H.J.Arends, R.Beck, G.Galler, A.Hunger, A.Kraus, I.J.D.MacGregor, J.Peise, B.Seitz, M.Schmitz, M.Schneider, O.Selke, M.Schumacher, F.Wissmann

Photoemission of Protons from 4He in the Δ-Resonance Region

NUCLEAR REACTIONS 4He(γ, p), E=130-525 MeV; measured proton spectra; deduced three separate reaction channels.

doi: 10.1007/s002180050095
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetM0548.


1995CR04      Nucl.Phys. A593, 463 (1995)

G.E.Cross, I.J.D.MacGregor, J.C.McGeorge, J.Ahrens, I.Anthony, J.R.M.Annand, R.Beck, D.Branford, T.Davinson, P.Grabmayr, S.J.Hall, P.D.Harty, T.Hehl, J.D.Kellie, T.Lamparter, L.Machenil, J.A.MacKenzie, G.J.Miller, R.O.Owens, J.Ryckebusch, M.Sauer, R.Schneider, K.Spaeth, M.Vanderhaeghen

Proton Photoproduction from 12C

NUCLEAR REACTIONS 12C(γ, p), E=200-500 MeV; measured σ(θ). 12C(γ, np), (γ, 2p), E=300 MeV; measured σ(θ, E(nucleon)); deduced reaction mechanism. Tagged photon beam.

doi: 10.1016/0375-9474(95)00318-U
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetM0797.


1995DO14      Phys.Rev. C51, 3479 (1995)

S.Dolfini, R.Alarcon, H.Arenhovel, R.Beck, A.Bernstein, W.Bertozzi, W.Boeglin, L.Cardman, J.Comfort, D.Dale, G.Dodson, K.Dow, M.Epstein, M.Farkhondeh, S.Gilad, J.Gorgen, M.Holtrop, D.Jordan, W.Kim, S.Kowalski, R.Laszewski, J.Mandeville, D.Margaziotis, D.Martinez, T.McIlvain, R.Miskimen, C.Papanicolas, D.Tieger, W.Turchinetz, L.Weinstein, S.Williamson

Out-of-Plane Quasielastic Scattering from Deuterium using Polarized Electrons

NUCLEAR REACTIONS 2H(polarized e, e'p), E=560 MeV; measured helicity independent coincidence σ(E, θ(e)) vs missing momentum, electron helicity asymmetry, A(e); deduced imaginary part of the longitudinal-transverse interference structure function f'(LT).

doi: 10.1103/PhysRevC.51.3479
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1995HA03      Phys.Rev. C51, 1982 (1995)

P.D.Harty, J.C.McGeorge, I.J.D.MacGregor, R.O.Owens, J.R.M.Annand, I.Anthony, G.I.Crawford, S.N.Dancer, S.J.Hall, J.D.Kellie, G.J.Miller, B.Schoch, R.Beck, H.Schmieden, J.M.Vogt, J.Ryckebusch

12C(γ, p)11B Cross Section from 80 to 157 MeV

NUCLEAR REACTIONS 12C(γ, p), E=80-157 MeV bremsstrahlung; measured σ(θ) vs E. 12C deduced momentum density distributions. Tagged beam, photon tagging spectrometer.

doi: 10.1103/PhysRevC.51.1982
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetM0376.


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