NSR Query Results
Output year order : Descending NSR database version of March 21, 2024. Search: Author = R.Beck Found 136 matches. Showing 1 to 100. [Next]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
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
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
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 Mpη 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
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
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
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
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
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
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
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
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
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
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
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
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
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+)Σ+, E=1700=2200 MeV; calculated σ. Compared with data and other calculations.
doi: 10.1140/epja/i2012-12088-3
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
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
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
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
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
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
2006BE48 Eur.Phys.J. A 28, Supplement 1, 173 (2006) 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
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
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
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
2004BE12 Eur.Phys.J. A 19, Supplement 1, 279 (2004) Future experiments at MAMI
doi: 10.1140/epjad/s2004-03-046-4
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
1997BE56 Phys.Rev.Lett. 79, 4510 (1997) Beck and Krahn Reply:
doi: 10.1103/PhysRevLett.79.4510
1997BE57 Phys.Rev.Lett. 79, 4512 (1997) Beck and Krahn Reply:
doi: 10.1103/PhysRevLett.79.4512
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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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