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NSR database version of April 11, 2024.

Search: Author = R.Schumacher

Found 45 matches.

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2020AN07      Eur.Phys.J. A 56, 139 (2020)

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

Hyperon III: K- p - πΣ coupled-channel dynamics in the Λ(1405) mass region

doi: 10.1140/epja/s10050-020-00142-8
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


2013SC17      Nucl.Phys. A914, 51c (2013)

R.A.Schumacher, K.Moriya

Isospin decomposition of the photoproduced Σπ system near the Λ(1405)

doi: 10.1016/j.nuclphysa.2013.03.003
Citations: PlumX Metrics


2012AN16      Phys.Rev. C 86, 069801 (2012)

M.Anghinolfi, J.Ball, N.A.Baltzell, M.Battaglieri, I.Bedlinskiy, M.Bellis, A.S.Biselli, C.Bookwalter, S.Boiarinov, P.Bosted, V.D.Burkert, D.S.Carman, A.Celentano, S.Chandavar, P.L.Cole, V.Crede, R.De Vita, E.De Sanctis, B.Dey, R.Dickson, D.Doughty, M.Dugger, R.Dupre, H.Egiyan, A.El Alaoui, L.El Fassi, L.Elouadrhiri, P.Eugenio, G.Fedotov, M.Y.Gabrielyan, M.Garcon, G.P.Gilfoyle, K.L.Giovanetti, F.X.Girod, J.T.Goetz, E.Golovatch, M.Guidal, L.Guo, K.Hafidi, H.Hakobyan, D.Heddle, K.Hicks, M.Holtrop, D.G.Ireland, B.S.Ishkhanov, E.L.Isupov, H.S.Jo, P.Khetarpal, A.Kim, W.Kim, V.Kubarovsky, S.V.Kuleshov, H.Y.Lu, I.J.D.MacGregor, N.Markov, M.E.McCracken, B.McKinnon, M.D.Mestayer, C.A.Meyer, M.Mirazita, V.Mokeev, K.Moriya, B.Morrison, A.Ni, S.Niccolai, G.Niculescu, I.Niculescu, M.Osipenko, A.I.Ostrovidov, K.Park, S.Park, S.Anefalos Pereira, S.Pisano, O.Pogorelko, S.Pozdniakov, J.W.Price, G.Ricco, M.Ripani, B.G.Ritchie, P.Rossi, D.Schott, R.A.Schumacher, E.Seder, Y.G.Sharabian, E.S.Smith, D.I.Sober, S.S.Stepanyan, P.Stoler, W.Tang, M.Ungaro, B.Vernarsky, M.F.Vineyard, D.P.Weygand, M.H.Wood, N.Zachariou, B.Zhao

Comment on "Observation of a narrow structure in 1H(γ, K0s)X $via interference with φ-meson production"

doi: 10.1103/PhysRevC.86.069801
Citations: PlumX Metrics


2011SC05      Phys.Rev. C 83, 025207 (2011)

R.A.Schumacher, M.M.Sargsian

Scaling and resonances in elementary K+ Λ photoproduction

doi: 10.1103/PhysRevC.83.025207
Citations: PlumX Metrics


2010MO36      Nucl.Phys. A835, 325c (2010)

K.Moriya, R.Schumacher, and the CLAS collaboration

Properties of the Λ(1405) Measured at CLAS

doi: 10.1016/j.nuclphysa.2010.01.210
Citations: PlumX Metrics


2010SC26      Nucl.Phys. A835, 231c (2010)

R.Schumacher, for and the CLAS Collaboration

Hyperon Photo- and Electro- Production Experiments at CLAS

doi: 10.1016/j.nuclphysa.2010.01.197
Citations: PlumX Metrics


2008SC09      Eur.Phys.J. A 35, 299 (2008)

R.Schumacher

Polarization in hyperon photo- and electro-production

doi: 10.1140/epja/i2007-10558-3
Citations: PlumX Metrics


2007PA36      Phys.Rev. C 76, 035501 (2007);Pub.note Phys.Rev. C 76, 039902 (2007)

J.D.Parker, M.J.Athanas, P.D.Barnes, S.Bart, B.Bassalleck, R.Chrien, G.Diebold, G.B.Franklin, K.Johnston, P.Pile, B.Quinn, F.Rozon, R.Sawafta, R.A.Schumacher, R.Stearns, I.Sukaton, R.Sutter, J.J.Szymanski, V.J.Zeps

Weak decays of 4ΛHe

NUCLEAR REACTIONS 4He(K-, π-), E at 750 MeV; measured lifetime and mesonic and nonmesonic hypernuclear decay rates.

doi: 10.1103/PhysRevC.76.035501
Citations: PlumX Metrics


2003SA46      Nucl.Phys. A721, 979c (2003)

A.Sakaguchi, S.Ajimura, H.Hayakawa, T.Kishimoto, H.Kohri, K.Matsuoka, S.Minami, Y.S.Miyake, K.Morikubo, E.Saji, Y.Shimizu, M.Sumihama, R.E.Chrien, M.May, P.Pile, A.Rusek, R.Sutter, P.M.Eugenio, G.Franklin, P.Khaustov, K.Paschke, B.Quinn, R.A.Schumacher, J.Franz, T.Fukuda, L.Gan, L.Tang, L.Yuan, J.Nakano, H.Noumi, H.Outa, T.Tamagawa, K.Tanida, R.Sawafta, H.Tamura, H.Akikawa

Structure of 13ΛC hypernucleus studied by the (K-, π-γ) reaction

NUCLEAR REACTIONS 13C(K-, π-X), E at 0.93 GeV/c; measured Eγ, Iγ(θ). 13C deduced hypernucleus levels, J, π, configurations.

doi: 10.1016/S0375-9474(03)01264-8
Citations: PlumX Metrics


2003SC35      Eur.Phys.J. A 18, 371 (2003)

R.A.Schumacher, for the CLAS Collaboration

Strangeness production and other recent results from Hall B at Jefferson Lab

NUCLEAR REACTIONS 1H(γ, K+X), E=0.911-2.3 GeV; 1H(e, e'K+X), E=2.6 GeV; measured hyperon production associated missing mass, total σ, recoil polarization.

doi: 10.1140/epja/i2002-10239-9
Citations: PlumX Metrics


2002KO10      Phys.Rev. C65, 034607 (2002)

H.Kohri, S.Ajimura, H.Hayakawa, T.Kishimoto, K.Matsuoka, S.Minami, Y.S.Miyake, T.Mori, K.Morikubo, E.Saji, A.Sakaguchi, Y.Shimizu, M.Sumihama, R.E.Chrien, M.May, P.Pile, A.Rusek, R.Sutter, P.M.Eugenio, G.Franklin, P.Khaustov, K.Paschke, B.P.Quinn, R.A.Schumacher, J.Franz, T.Fukuda, H.Noumi, H.Outa, L.Gan, L.Tang, L.Yuan, J.Nakano, T.Tamagawa, K.Tanida, R.Sawafta, H.Tamura, H.Akikawa

Λ13C Hypernucleus Studied with the 13C(K-, π-γ) Reaction

NUCLEAR REACTIONS 13C(K-, π-), E at 0.93 GeV/c; measured Eγ, Iγ, pion spectra. 13C deduced hypernucleus level energies, spin-orbit splitting.

doi: 10.1103/PhysRevC.65.034607
Citations: PlumX Metrics


2001AH05      Phys.Rev.Lett. 87, 132504 (2001)

J.K.Ahn, S.Ajimura, H.Akikawa, B.Bassalleck, A.Berdoz, D.Carman, R.E.Chrien, C.A.Davis, P.Eugenio, H.Fischer, G.B.Franklin, J.Franz, T.Fukuda, L.Gan, H.Hotchi, A.Ichikawa, K.Imai, S.H.Kahana, P.Khaustov, T.Kishimoto, P.Koran, H.Kohri, A.Kourepin, K.Kubota, M.Landry, M.May, C.Meyer, Z.Meziani, S.Minami, T.Miyachi, T.Nagae, J.Nakano, H.Outa, K.Paschke, P.Pile, M.Prokhabatilov, B.P.Quinn, V.Rasin, A.Rusek, H.Schmitt, R.A.Schumacher, M.Sekimoto, K.Shileev, Y.Shimizu, R.Sutter, T.Tamagawa, L.Tang, K.Tanida, K.Yamamoto, L.Yuan

Production of ΛΛ4H Hypernuclei

NUCLEAR REACTIONS 9Be(K-, K+X), E at 185 MeV/c; measured pion spectra; deduced double-Λ hypernucleus production.

doi: 10.1103/PhysRevLett.87.132504
Citations: PlumX Metrics


2001AJ02      Phys.Rev.Lett. 86, 4255 (2001)

S.Ajimura, H.Hayakawa, T.Kishimoto, H.Kohri, K.Matsuoka, S.Minami, T.Mori, K.Morikubo, E.Saji, A.Sakaguchi, Y.Shimizu, M.Sumihama, R.E.Chrien, M.May, P.Pile, A.Rusek, R.Sutter, P.Eugenio, G.Franklin, P.Khaustov, K.Paschke, B.P.Quinn, R.A.Schumacher, J.Franz, T.Fukuda, H.Noumi, H.Outa, L.Gan, L.Tang, L.Yuan, H.Tamura, J.Nakano, T.Tamagawa, K.Tanida, R.Sawafta

Observation of Spin-Orbit Splitting in Λ Single-Particle States

NUCLEAR REACTIONS 13C(K-, π-), E at 0.93 GeV/c; measured Eγ, Iγ, (pion)γ-coin. 13C deduced hypernucleus levels spin-orbit splitting.

doi: 10.1103/PhysRevLett.86.4255
Citations: PlumX Metrics


2001LE17      Nucl.Phys. A684, 598c (2001)

L.Lee, D.E.Alburger, P.D.Barnes, B.Bassalleck, A.Berdoz, A.Biglan, T.Burger, D.Carman, R.E.Chrien, C.A.Davis, H.Fischer, G.B.Franklin, J.Franz, L.Gan, A.Ichikawa, T.Iijima, K.Imai, P.Khaustov, Y.Kondo, P.Koran, M.Landry, J.Lowe, R.Magahiz, M.May, R.McCrady, F.Merrill, C.A.Meyer, S.A.Page, K.Paschke, P.H.Pile, B.Quinn, W.D.Ramsay, A.Rusek, R.Sawafta, H.Schmitt, R.A.Schumacher, R.Stotzer, R.Sutter, F.Takeutchi, W.T.H.van Oers, K.Yamamoto, M.Yosoi, V.J.Zeps

Search for Strangeness -2 Hypernuclei

NUCLEAR REACTIONS 12C(K-, K+X), E at 1.8 GeV/c; measured binding energy spectrum.

doi: 10.1016/S0375-9474(01)00392-X
Citations: PlumX Metrics


2001PO26      Nucl.Phys. A692, 97c (2001)

S.Pomp, P.D.Barnes, R.Broders, B.Bunker, H.Dennert, R.E.Eisenstein, W.Eyrich, H.Fischer, G.Franklin, J.Franz, R.Geyer, P.Harris, J.Hauffe, D.Hertzog, T.Johansson, T.Jones, K.Kilian, R.A.Kraft, C.Meyer, W.Oelert, B.Quinn, K.Rohrich, E.Rossle, K.Sachs, H.Schmitt, R.Schumacher, T.Sefzick, F.Stinzing, R.Tayloe, R.Todenhagen, E.Traneus, S.Wirth, for the PS185 Collaboration

A Measurement of the (p-bar)p → KSKSη Cross Section at Beam Momenta Around 1.6 GeV/c

NUCLEAR REACTIONS 1H(p-bar, X), E at 1.6 GeV/c; measured two-kaon plus η meson production missing mass distributions, σ.

doi: 10.1016/S0375-9474(01)01164-2
Citations: PlumX Metrics


2001TA27      Nucl.Phys. A691, 234c (2001)

T.Tamagawa, J.K.Ahn, S.Ajimura, H.Akikawa, B.Bassalleck, A.Berdoz, D.Carman, R.E.Chrien, C.A.Davis, P.Eugenio, H.Fischer, G.B.Franklin, J.Franz, T.Fukuda, L.Gan, L.Tang, H.Hotchi, A.Ichikawa, K.Imai, P.Khaustov, T.Kishimoto, P.Koran, H.Kori, A.Kurepin, K.Kubota, M.Landry, M.May, C.Mayer, Z.Meziani, E.Meyer, S.Minami, T.Miyachi, J.Nakano, T.Nagae, H.Outa, K.Paschke, P.Pile, M.Prokhatilov, B.P.Quinn, V.Rasin, A.Rusek, H.Schmitt, R.A.Schumacher, M.Sekimoto, K.Shileev, Y.Shimizu, R.Sutter, K.Tanida, K.Yamamoto, M.Yosoi, L.Yuan

The ΞN Interaction in Quasi-Free Ξ- Production

NUCLEAR REACTIONS 9Be(K-, K+), E at 1.8 GeV/c; measured hyperon production associated invariant mass spectra; deduced Ξ-nucleon elastic scattering σ.

doi: 10.1016/S0375-9474(01)01035-1
Citations: PlumX Metrics


2000BB03      Phys.Rev. C62, 055203 (2000)

P.D.Barnes, G.Franklin, R.McCrady, F.Merrill, C.Meyer, B.Quinn, R.A.Schumacher, V.Zeps, N.Hamann, W.Eyrich, R.Geyer, J.Hauffe, M.Kirsch, R.A.Kraft, F.Stinzing, H.Fischer, J.Franz, E.Rossle, M.Ruh, H.Schmitt, R.Todenhagen, K.Kilian, W.Oelert, K.Rohrich, K.Sachs, T.Sefzick, B.D.Bunker, R.A.Eisenstein, P.G.Harris, D.W.Hertzog, T.D.Jones, R.L.Tayloe, T.Johansson, S.Pomp, E.Traneus

High-Statistics Measurements of the (p-bar)p → (Λ-bar)Λ and (p-bar)p → (Λ-bar)Σ0 + c.c. Reactions at Threshold

NUCLEAR REACTIONS 1H(p-bar, X), E ≈ threshold; measured (Λ-bar)Λ and (Λ-bar)Σ0 production σ, σ(θ); deduced no near-threshold resonance structures.

doi: 10.1103/PhysRevC.62.055203
Citations: PlumX Metrics


2000SC15      Nucl.Phys. A663-664, 440c (2000)

R.A.Schumacher, for the CLAS Collaboration

Strangeness Photoproduction with CLAS at Jefferson Lab

NUCLEAR REACTIONS 1H(γ, K+X), E=0.911-2.4 GeV; measured missing mass spectrum. Tagged photons.

doi: 10.1016/S0375-9474(99)00678-8
Citations: PlumX Metrics


2000TA07      Nucl.Phys. A663-664, 481c (2000)

H.Tamura, D.Abe, S.Ajimura, H.Akikawa, K.Araki, H.C.Bhang, R.E.Chrien, T.Endo, P.Eugenio, G.B.Franklin, Y.Fujii, T.Fukuda, L.Gan, O.Hashimoto, H.Hotchi, K.Imai, Y.Kakiguchi, P.Khaustov, J.H.Kim, Y.D.Kim, H.Kohri, M.May, T.Miyoshi, T.Murakami, T.Nagae, J.Nakano, H.Noumi, H.Outa, K.Ozawa, P.H.Pile, B.P.Quinn, A.Rusek, T.Saito, J.Sasao, Y.Sato, S.Satoh, R.I.Sawafta, R.A.Schumacher, M.Sekimoto, T.Takahashi, T.Tamagawa, L.Tang, K.Tanida, H.H.Xia, L.Yuan, S.H.Zhou, L.H.Zhu, X.F.Zhu

High-Resolution Hypernuclear Gamma-Ray Spectroscopy

NUCLEAR REACTIONS 7Li(π+, K+), E at 1.05 GeV/c; measured Eγ, Iγ. 7Li deduced hypernucleus transitions B(E2), B(M1). 9Be(K-, π-), E not given; measured Eγ, Iγ. 9Be deduced hypernucleus transitions.

doi: 10.1016/S0375-9474(99)00636-3
Citations: PlumX Metrics


1999JO09      Nucl.Phys. A655, 173c (1999)

T.Johansson, P.D.Barnes, B.Bassalleck, C.Bradke, R.Broders, B.Bunker, H.Dennert, H.Dutz, S.Eilerts, R.E.Eisenstein, W.Eyrich, D.Fields, H.Fischer, G.Franklin, J.Franz, R.Gehring, R.Geyer, S.Goertz, J.Harmsen, P.Harris, J.Hauffe, D.Hertzog, T.Jones, K.Kilian, P.Kingsberry, E.Kriegler, K.Koningsmann, J.Lowe, R.A.Kraft, A.Meier, C.A.Meyer, W.Meyer, W.Oelert, K.Paschke, M.Plucktum, S.Pomp, B.Quinn, E.Radtke, G.Reicherz, M.Ruh, K.Rohrich, E.Rossle, K.Sachs, H.Schmitt, R.Schumacher, T.Sefzick, F.Stinzing, R.Stotzer, R.Tayloe, R.Todenhagen, S.Wirth, and the PS185 Collaboration

Results from PS185

NUCLEAR REACTIONS 1H(p-bar, X), E at 1.4-2 GeV/c; analyzed antihyperon-hyperon production σ, σ(θ), related data.

doi: 10.1016/S0375-9474(99)00198-0
Citations: PlumX Metrics


1997BA34      Phys.Lett. 402B, 227 (1997)

P.D.Barnes, W.Breunlich, H.Dennert, R.A.Eisenstein, W.Eyrich, H.Fischer, G.Franklin, J.Franz, R.von Frankenberg, R.Geyer, N.Hamann, D.W.Hertzog, T.Johansson, K.Kilian, M.Kirsch, R.A.Kraft, W.Oelert, B.Quinn, K.Rohrich, E.Rossle, H.Schmitt, R.Schumacher, T.Sefzick, F.Stinzing, R.Tayloe, R.Todenhagen, and the PS185 Collaboration

Measurement of the (p-bar)p → (Σ+-bar)Σ+ and (p-bar)p → (Σ--bar)Σ- Close to Threshold

NUCLEAR REACTIONS 1H(p-bar, X), E at 1.922 GeV/c; measured hyperon, antihyperon pairs production σ, ratio.

doi: 10.1016/S0370-2693(97)00420-6
Citations: PlumX Metrics


1997SC32      Phys.Rev. C56, 2774 (1997)

R.A.Schumacher

Photoproduction Evidence for and Against Hidden-Strangeness States Near 2 GeV

NUCLEAR REACTIONS 1H(γ, X), E=0.9-5.2 GeV; analyzed strangeness production σ; deduced hidden-strangeness states evidence.

doi: 10.1103/PhysRevC.56.2774
Citations: PlumX Metrics


1997ST10      Phys.Rev.Lett. 78, 3646 (1997)

R.W.Stotzer, T.Burger, P.D.Barnes, B.Bassalleck, A.R.Berdoz, M.Burger, R.E.Chrien, C.A.Davis, G.E.Diebold, H.Enyo, H.Fischer, G.B.Franklin, J.Franz, L.Gan, D.R.Gill, T.Iijima, K.Imai, P.Koran, M.Landry, L.Lee, J.Lowe, R.Magahiz, A.Masaike, R.McCrady, F.Merrill, C.A.Meyer, J.M.Nelson, K.Okada, S.A.Page, P.H.Pile, B.P.Quinn, W.D.Ramsay, E.Rossle, A.Rusek, R.Sawafta, H.Schmitt, R.A.Schumacher, R.L.Stearns, I.R.Sukaton, R.Sutter, J.J.Szymanski, F.Takeutchi, W.T.H.van Oers, D.M.Wolfe, K.Yamamoto, M.Yosoi, V.J.Zeps, R.Zybert, and the BNL E836 Collaboration

Search for the H-Dibaryon in 3He(K-, K+)Hn

NUCLEAR REACTIONS 3He(K-, K+), E=high; analyzed data; deduced ZZγ, Zγγ couplings.

doi: 10.1103/PhysRevLett.78.3646
Citations: PlumX Metrics


1996BA58      Phys.Rev. C54, 1877 (1996)

P.D.Barnes, G.Diebold, G.Franklin, B.Quinn, R.Schumacher, J.Seydoux, V.Zeps, P.Birien, W.Dutty, H.Fischer, J.Franz, E.Rossle, H.Schledermann, H.Schmitt, R.Todenhagen, W.Breunlich, N.Nagele, R.Broders, R.von Frankenberg, K.Kilian, W.Oelert, K.Rohrich, K.Sachs, T.Sefzick, G.Sehl, M.Ziolkowski, R.A.Eisenstein, D.Hertzog, R.Tayloe, H.Dennert, W.Eyrich, R.Geyer, J.Hauffe, A.Hofmann, M.Kirsch, R.A.Kraft, F.Stinzing, N.Hamann, T.Johansson, S.Ohlsson

Observables in High-Statistics Measurements of the Reaction (p-bar)p → (Λ-bar)Λ

NUCLEAR REACTIONS 1H(p-bar, X), E at 1.642, 1.918 GeV/c; measured Λ(Λ-bar) production associated σ(θ), polarizations, spin correlations, analyzing powers, singlet fractions; deduced CP, CPT violation phenomena upper limits.

doi: 10.1103/PhysRevC.54.1877
Citations: PlumX Metrics


1996BA78      Phys.Rev. C54, 2831 (1996)

P.D.Barnes, G.Franklin, B.Quinn, R.A.Schumacher, V.Zeps, N.Hamann, W.Dutty, H.Fischer, J.Franz, E.Rossle, H.Schmitt, R.Todenhagen, R.von Frankenberg, K.Kilian, W.Oelert, K.Rohrich, K.Sachs, T.Sefzick, M.Ziolkowski, R.A.Eisenstein, P.G.Harris, D.W.Hertzog, S.A.Hughes, P.E.Reimer, R.L.Tayloe, W.Eyrich, R.Geyer, M.Kirsch, R.A.Kraft, F.Stinzing, T.Johansson, S.Ohlsson

Measurement of the (p-bar)p → (Λ-bar)Λ and (p-bar)p → (Σ-bar)0Λ + (c.c.) Reactions at 1.726 and 1.771 GeV/c

NUCLEAR REACTIONS 1H(p-bar, X), E at 1.726, 1.771 GeV/c; measured total, differential σ, polarization, spin correlation coefficients for Σ0-barΛ, Λ-barΣ0, hyperon production.

doi: 10.1103/PhysRevC.54.2831
Citations: PlumX Metrics


1996RU06      Phys.Rev. C54, R15 (1996)

A.Rusek, B.Bassalleck, A.Berdoz, T.Burger, M.Burger, R.E.Chrien, G.E.Diebold, H.Enyo, H.Fischer, G.B.Franklin, J.Franz, T.Iijima, K.Imai, J.Lowe, R.Magahiz, A.Masaike, C.A.Meyer, R.McCrady, F.Merrill, S.Mihara, J.M.Nelson, K.Okada, P.H.Pile, B.Quinn, E.Rossle, N.Saito, R.Sawafta, H.Schmitt, R.A.Schumacher, R.L.Stearns, R.Stotzer, R.Sukaton, R.Sutter, F.Takeutchi, D.M.Wolfe, K.Yamamoto, S.Yamashita, S.Yokkaichi, V.Zeps, R.Zybert, and the E886 Collaboration

Strangelet Search and Light Nucleus Production in Relativistic Si + Pt and Au + Pt Collisions

NUCLEAR REACTIONS Pt(Si, X), E at 14.6 GeV/c/nucleon; Pt(197Au, X), E at 10.8 GeV/c/nucleon; measured invariant strangelet production σ upper limits, relativistic collisions.

doi: 10.1103/PhysRevC.54.R15
Citations: PlumX Metrics


1995BA23      Nucl.Phys. A585, 339c (1995)

B.Bassalleck, A.R.Berdoz, J.Birchall, T.Buerger, M.Burger, R.E.Chrien, C.A.Davis, G.Diebold, J.Dornboos, M.Eggers, G.F.Franklin, J.Franz, L.Gan, T.Iijima, K.Imai, M.Landry, L.Lee, J.Lowe, R.Magahiz, C.Maher, A.Masaike, M.May, R.McCrady, F.Merrill, K.Okada, S.A.Page, P.H.Pile, B.Quinn, W.D.Ramsay, E.Roessle, A.Rusek, R.Sawafta, H.Schmitt, R.Schumacher, R.L.Stearns, R.Stotzer, I.R.Sukaton, R.J.Sutter, F.Takeutchi, W.T.H.van Oers, D.Wolfe, K.Yamamoto, M.Yosoi, V.J.Zeps, R.Zybert

A Multi-Cell Target for (Lambda)(Lambda) Hypernuclei Searches

doi: 10.1016/0375-9474(94)00596-F
Citations: PlumX Metrics


1995RU02      Nucl.Phys. A585, 59c (1995)

A.Rusek, B.Bassalleck, A.Berdoz, T.Burger, M.Burger, R.E.Chrien, G.E.Diebold, H.Enyo, H.Fischer, G.B.Franklin, J.Franz, T.Iijima, K.Imai, J.Lowe, R.Magahiz, A.Masaike, F.Merrill, C.A.Meyer, S.Mihara, J.M.Nelson, K.Okada, P.Pile, B.Quinn, E.Rossle, N.Saito, R.Sawafta, H.Schmitt, R.A.Schumacher, R.Stearns, R.Stotzer, R.Sukaton, R.Sutter, F.Takeutchi, D.M.Wolfe, K.Yamamoto, S.Yamashita, S.Yokkaichi, V.Zeps, R.Zybert

Search for Strangelets and Other Rare Objects in Au + Pt Collisions at AGS Using a Fixed-Angle Focusing Spectrometer

NUCLEAR REACTIONS Pt(197Au, X), E at 10.8 GeV/c/nucleon; measured strangelet production σ upper limit, p, t, d, 3,4,6,8He, 6,7,8Li, 7Be production invariant σ. Coalescence model fits to data.

doi: 10.1016/0375-9474(94)00544-W
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1995RU09      Phys.Rev. C52, 1580 (1995)

A.Rusek, B.Bassalleck, A.Berdoz, T.Burger, M.Burger, R.E.Chrien, G.E.Diebold, H.Enyo, H.Fischer, G.B.Franklin, J.Franz, T.Iijima, K.Imai, J.Lowe, R.Magahiz, A.Masaike, C.A.Meyer, R.McCrady, F.Merrill, S.Mihara, J.M.Nelson, K.Okada, P.H.Pile, B.Quinn, E.Rossle, N.Saito, R.Sawafta, H.Schmitt, R.A.Schumacher, R.L.Stearns, R.Stotzer, R.Sukaton, R.Sutter, F.Takeutchi, D.M.Wolfe, K.Yamamoto, S.Yamashita, S.Yokkaichi, V.Zeps, R.Zybert, and the E866 Collaboration

Search for H Dibaryon-Nucleus Bound States in Relativistic Au + Pt Collisions

NUCLEAR REACTIONS Pb(197Au, X), E=relativistic; measured H dibaryon, other exotic objects production σ, relativistic collisions.

doi: 10.1103/PhysRevC.52.1580
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1995SC15      Nucl.Phys. A585, 63c (1995)

R.A.Schumacher

Electromagnetic Strangeness Production at CEBAF

doi: 10.1016/0375-9474(94)00545-X
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1994AL28      Phys.Rev.Lett. 73, 1336 (1994)

T.Alteholz, D.Androic, G.Backenstoss, D.Bosnar, H.Breuer, A.Brkovic, H.Dobbeling, T.Dooling, W.Fong, M.Furic, P.A.M.Gram, N.K.Gregory, J.P.Haas, A.Hoffart, C.H.Q.Ingram, A.Klein, K.Koch, J.Kohler, B.Kotlinski, M.Kroedel, G.Kyle, A.Lehmann, Z.N.Lin, G.Mahl, A.O.Mateos, K.Michaelian, S.Mukhopadhyay, T.Petkovic, R.P.Redwine, D.Rowntree, R.Schumacher, U.Sennhauser, N.Simicevic, F.D.Smit, G.van der Steenhoven, D.R.Tieger, R.Trezeciak, H.Ullrich, M.Wang, M.H.Wang, H.J.Weyer, M.Wildi, K.E.Wilson, and the LADS Collaboration

Large-Solid-Angle Study of Pion Absorption on 3He

NUCLEAR REACTIONS 3He(π+, X), E=118-239 MeV; measured proton energy spectra following absorption; deduced total absorption σ(E), two-, three-nucleon absorption relative contributions. Large acceptance detector system.

doi: 10.1103/PhysRevLett.73.1336
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1994SA15      Phys.Rev. C49, 3211 (1994)

N.Saito, B.Bassalleck, T.Burger, M.Burger, R.Chrien, G.E.Diebold, H.Enyo, G.Franklin, J.Franz, T.Iijima, K.Imai, J.Lowe, R.Magahiz, A.Masaike, F.Merrill, J.M.Nelson, K.Okada, P.Pile, B.Quinn, E.Rossle, A.Rusek, R.Sawafta, H.Schmitt, R.A.Schumacher, R.L.Stearns, I.Sukaton, R.Sutter, F.Takeutchi, D.M.Wolfe, S.Yokkaichi, V.Zeps, R.Zybert, and the E886 Collaboration

Composite Particle Production in Relativistic Au + Pt, Si + Pt, and p + Pt Collisions

NUCLEAR REACTIONS Pt(197Au, X), E at 11.5 GeV/c/nucleon; measured d, t, 3,4He inclusive production σ; Pt(Si, X), (p, X), E at 11.5 GeV/c/nucleon; measured composite particle production σ; deduced coalescence radii, reaction volumes. Sato-Yazaki model.

doi: 10.1103/PhysRevC.49.3211
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1993HY01      Phys.Rev. C47, 1184 (1993)

S.D.Hyman, D.J.Mack, P.G.Roos, H.Breuer, N.S.Chant, F.Khazaie, B.G.Ritchie, J.D.Silk, G.S.Kyle, P.A.Amaudruz, Th.S.Bauer, C.H.Q.Ingram, D.Renker, R.A.Schumacher, U.Sennhauser, W.J.Burger

Energy Dependence of Two-Nucleon Pion Absorption on 16O

NUCLEAR REACTIONS 16O(π+, pX), (π+, 2p), E=115, 165 MeV; measured σ(θ) vs proton momentum; deduced two-nucleon absorption σ, final state interactions role.

doi: 10.1103/PhysRevC.47.1184
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1992MA09      Phys.Rev. C45, 1767 (1992)

D.J.Mack, P.G.Roos, H.Breuer, N.S.Chant, S.D.Hyman, F.Khazaie, B.G.Ritchie, J.D.Silk, G.S.Kyle, P.A.Amaudruz, Th.S.Bauer, C.H.Q.Ingram, D.Renker, R.A.Schumacher, U.Sennhauser, W.J.Burger

Dominance of the Two-Nucleon Mechanism in 16O(π, pp) at 115 MeV

NUCLEAR REACTIONS 16O(π+, 2p), E=115 MeV; measured σ(E1, θ1, E2, θ2); deduced two-nucleon absorption σ. DWIA analysis.

doi: 10.1103/PhysRevC.45.1767
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1992SC28      Nucl.Phys. A547, 143c (1992)

R.A.Schumacher

Possible Violation of the ΔI = 1/2 Rule in Non-Mesonic Hypernuclear Weak Decay

NUCLEAR STRUCTURE A=4, 5, 12; calculated nonmesonic weak decay of lambda hypernuclei; deduced no evidence for ΔI=1/2 rule violation.

doi: 10.1016/0375-9474(92)90720-5
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1991RA08      Phys.Rev.Lett. 66, 1279 (1991)

A.Rahav, J.Alster, D.Ashery, J.Lichtenstadt, I.Navon, E.Piasetzky, P.Amaudruz, M.Botje, W.Burger, C.H.Q.Ingram, R.A.Schumacher, U.Sennhauser, S.A.Wood

Measurement of the 12C(π, 2π) Reactions and Possible Evidence of a Double-Δ Excitation

NUCLEAR REACTIONS 12C(π-, π-π+), (π-, 2π-), E=292 MeV; measured pion spectra, σ(θ); deduced double-Δ excitation evidence.

doi: 10.1103/PhysRevLett.66.1279
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1991SO07      Nucl.Phys. A527, 371c (1991)

T.Soos, B.C.Craft, E.R.Kinney, C.Maher, J.L.Matthews, W.W.Sapp, R.A.Schumacher, R.S.Turley, R.O.Owens, G.S.Adams, A.Hegerath

An Absolute Measurement of the Differential Cross Section for the Photodisintegration of the Deuteron

NUCLEAR REACTIONS 2H(γ, p), E=60-350 MeV; measured σ(θ), σ.

doi: 10.1016/0375-9474(91)90126-Q
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1990HY01      Phys.Rev. C41, R409 (1990)

S.D.Hyman, D.J.Mack, H.Breuer, N.S.Chant, F.Khazaie, B.G.Ritchie, P.G.Roos, J.D.Silk, P.-A.Amaudruz, Th.S.Bauer, C.H.Q.Ingram, G.S.Kyle, D.Renker, R.A.Schumacher, U.Sennhauser, W.J.Burger

16O(π+, 2p) Reaction at 165 MeV

NUCLEAR REACTIONS 16O(π+, 2p), E=165 MeV; measured σ(θp1, θp2, Ep1, Ep2), pp-coin; deduced total absorption σ. DWIA, phase space analyses.

doi: 10.1103/PhysRevC.41.R409
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1988SC14      Phys.Rev. C38, 2205 (1988)

R.A.Schumacher, P.A.Amaudruz, C.H.Q.Ingram, U.Sennhauser, H.Breuer, N.S.Chant, A.E.Feldman, B.S.Flanders, F.Khazaie, D.J.Mack, P.G.Roos, J.D.Silk, G.S.Kyle

Exclusive Quasi-Deuteron Absorption of Pions in 16O and 18O at 116 MeV

NUCLEAR REACTIONS 18,16O(π+, 2p), E=116 MeV; measured σ(E(2p)), σ(θ1, θ2), σ(θ1, θ2, E1); deduced reaction mechanism.

doi: 10.1103/PhysRevC.38.2205
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1987BR17      Nucl.Phys. A469, 617 (1987)

W.Bruckner, H.Dobbeling, P.C.Gugelot, F.Guttner, H.Kneis, S.Majewski, M.Nomachi, S.Paul, B.Povh, R.D.Ransome, T.-A.Shibata, M.Treichel, Th.Walcher, P.Amaudruz, Th.Bauer, J.Domingo, R.Frey, Q.Ingram, H.Janszen, G.Kyle, D.Renker, R.A.Schumacher

π+ Absorption on 12C in the Δ(1232) Region

NUCLEAR REACTIONS 12C(π+, 3p), E at 355, 375, 405 MeV/c; measured σ(Ep, θp); deduced pion capture associated quasifree scattering resonance structure.

doi: 10.1016/0375-9474(87)90016-9
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1987WR03      Hyperfine Interactions 35, 627 (1987)

U.Wrede, R.Schumacher, R.Vianden

Orientation of the Oxygen-Induced Non-Axially Symmetric Electric Field Gradient at 181Ta in Ta

RADIOACTIVITY 181Hf(β-); measured γγ(θ, H, t); deduced 181Ta electric field gradient in Ta, quadrupole interaction frequency, asymmetry parameter vs temperature.

doi: 10.1007/BF02394464
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1986SC01      Phys.Rev. C33, 50 (1986)

R.A.Schumacher, J.L.Matthews, W.W.Sapp, R.S.Turley, G.S.Adams, R.O.Owens

Two-Body Photodisintegration of 4He in the 100-360 MeV Region

NUCLEAR REACTIONS 4He(γ, n), (γ, p), E=100-360 MeV; measured σ(E, θ). Comparison with theory, meson exchange effects.

doi: 10.1103/PhysRevC.33.50
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetM0579.


1985TU02      Phys.Lett. 157B, 19 (1985)

R.S.Turley, E.R.Kinney, J.L.Matthews, W.W.Sapp, E.J.Scheidker, R.A.Schumacher, S.A.Wood, G.S.Adams, R.O.Owens

The 16O(γ, p0)15N Reaction at E(γ) = 196 MeV

NUCLEAR REACTIONS 16O(γ, p), E=196 MeV; measured σ(Ep), σ(θ); deduced reaction models inadequacy.

doi: 10.1016/0370-2693(85)91203-1
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1982SC12      Phys.Rev. C25, 2269 (1982)

R.A.Schumacher, G.S.Adams, D.R.Ingham, J.L.Matthews, W.W.Sapp, R.S.Turley, R.O.Owens, B.L.Roberts

Cu(γ, p)X Reaction at Eγ = 150 and 300 MeV

NUCLEAR REACTIONS Cu(γ, p), E=150, 300 MeV bremsstrahlung; measured σ(Ep, θ); deduced reaction mechanism, participating nucleon number. Inclusive reactions, intranuclear cascade analyses.

doi: 10.1103/PhysRevC.25.2269
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetM0586.


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