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Measurement of the transverse target and beam-target asymmetries in η meson photoproduction at MAMI.
Akondi, C S; Annand, J R M; Arends, H J; Beck, R; Bernstein, A; Borisov, N; Braghieri, A; Briscoe, W J; Cherepnya, S; Collicott, C; Costanza, S; Downie, E J; Dieterle, M; Fix, A; Fil'kov, L V; Garni, S; Glazier, D I; Gradl, W; Gurevich, G; Hall Barrientos, P; Hamilton, D; Hornidge, D; Howdle, D; Huber, G M; Kashevarov, V L; Keshelashvili, I; Kondratiev, R; Korolija, M; Krusche, B; Lazarev, A; Lisin, V; Livingston, K; MacGregor, I J D; Mancel, J; Manley, D M; Martel, P; McNicoll, E F; Meyer, W; Middleton, D; Miskimen, R; Mushkarenkov, A; Nefkens, B M K; Neganov, A; Nikolaev, A; Oberle, M; Ostrick, M; Ortega, H; Ott, P; Otte, P B; Oussena, B.
Afiliação
  • Akondi CS; Kent State University, Kent, Ohio 44242-0001, USA.
  • Annand JR; SUPA School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom.
  • Arends HJ; Institut für Kernphysik, Johannes Gutenberg-Universität Mainz, D-55099 Mainz, Germany.
  • Beck R; Helmholtz-Institut für Strahlen- und Kernphysik, University of Bonn, D-53115 Bonn, Germany.
  • Bernstein A; Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
  • Borisov N; Joint Institute for Nuclear Research, 141980 Dubna, Russia.
  • Braghieri A; INFN Sezione di Pavia, I-27100 Pavia, Italy.
  • Briscoe WJ; The George Washington University, Washington, DC 20052-0001, USA.
  • Cherepnya S; Lebedev Physical Institute, 119991 Moscow, Russia.
  • Collicott C; Department of Astronomy and Physics, Saint Marys University, Halifax, Nova Scotia B3H 3C3, Canada.
  • Costanza S; INFN Sezione di Pavia, I-27100 Pavia, Italy.
  • Downie EJ; Institut für Kernphysik, Johannes Gutenberg-Universität Mainz, D-55099 Mainz, Germany and The George Washington University, Washington, DC 20052-0001, USA.
  • Dieterle M; Departement für Physik, University of Basel, CH-4056 Basel, Switzerland.
  • Fix A; Laboratory of Mathematical Physics, Tomsk Polytechnic University, 634034 Tomsk, Russia.
  • Fil'kov LV; Lebedev Physical Institute, 119991 Moscow, Russia.
  • Garni S; Departement für Physik, University of Basel, CH-4056 Basel, Switzerland.
  • Glazier DI; SUPA School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom and SUPA School of Physics, University of Edinburgh, Edinburgh EH9 3JZ, United Kingdom.
  • Gradl W; Institut für Kernphysik, Johannes Gutenberg-Universität Mainz, D-55099 Mainz, Germany.
  • Gurevich G; Institute for Nuclear Research, 125047 Moscow, Russia.
  • Hall Barrientos P; SUPA School of Physics, University of Edinburgh, Edinburgh EH9 3JZ, United Kingdom.
  • Hamilton D; SUPA School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom.
  • Hornidge D; Mount Allison University, Sackville, New Brunswick E4L 1E6, Canada.
  • Howdle D; SUPA School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom.
  • Huber GM; University of Regina, Regina, Saskatchewan S4S 0A2, Canada.
  • Kashevarov VL; Institut für Kernphysik, Johannes Gutenberg-Universität Mainz, D-55099 Mainz, Germany and Lebedev Physical Institute, 119991 Moscow, Russia.
  • Keshelashvili I; Departement für Physik, University of Basel, CH-4056 Basel, Switzerland.
  • Kondratiev R; Institute for Nuclear Research, 125047 Moscow, Russia.
  • Korolija M; Rudjer Boskovic Institute, HR-10000 Zagreb, Croatia.
  • Krusche B; Departement für Physik, University of Basel, CH-4056 Basel, Switzerland.
  • Lazarev A; Joint Institute for Nuclear Research, 141980 Dubna, Russia.
  • Lisin V; Institute for Nuclear Research, 125047 Moscow, Russia.
  • Livingston K; SUPA School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom.
  • MacGregor IJ; SUPA School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom.
  • Mancel J; SUPA School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom.
  • Manley DM; Kent State University, Kent, Ohio 44242-0001, USA.
  • Martel P; Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA and University of Massachusetts, Amherst, Massachusetts 01003, USA.
  • McNicoll EF; SUPA School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom.
  • Meyer W; Institut für Experimentalphysik, Ruhr-Universität, D-44780 Bochum, Germany.
  • Middleton D; Institut für Kernphysik, Johannes Gutenberg-Universität Mainz, D-55099 Mainz, Germany and Mount Allison University, Sackville, New Brunswick E4L 1E6, Canada.
  • Miskimen R; University of Massachusetts, Amherst, Massachusetts 01003, USA.
  • Mushkarenkov A; INFN Sezione di Pavia, I-27100 Pavia, Italy and University of Massachusetts, Amherst, Massachusetts 01003, USA.
  • Nefkens BM; University of California Los Angeles, Los Angeles, California 90095-1547, USA.
  • Neganov A; Joint Institute for Nuclear Research, 141980 Dubna, Russia.
  • Nikolaev A; Helmholtz-Institut für Strahlen- und Kernphysik, University of Bonn, D-53115 Bonn, Germany.
  • Oberle M; Departement für Physik, University of Basel, CH-4056 Basel, Switzerland.
  • Ostrick M; Institut für Kernphysik, Johannes Gutenberg-Universität Mainz, D-55099 Mainz, Germany.
  • Ortega H; Institut für Kernphysik, Johannes Gutenberg-Universität Mainz, D-55099 Mainz, Germany.
  • Ott P; Institut für Kernphysik, Johannes Gutenberg-Universität Mainz, D-55099 Mainz, Germany.
  • Otte PB; Institut für Kernphysik, Johannes Gutenberg-Universität Mainz, D-55099 Mainz, Germany.
  • Oussena B; Institut für Kernphysik, Johannes Gutenberg-Universität Mainz, D-55099 Mainz, Germany and The George Washington University, Washington, DC 20052-0001, USA.
Phys Rev Lett ; 113(10): 102001, 2014 Sep 05.
Article em En | MEDLINE | ID: mdl-25238349
ABSTRACT
We present new data for the transverse target asymmetry T and the very first data for the beam-target asymmetry F in the γ[over →]p[over →]→ηp reaction up to a center-of-mass energy of W=1.9 GeV. The data were obtained with the Crystal-Ball/TAPS detector setup at the Glasgow tagged photon facility of the Mainz Microtron MAMI. All existing model predictions fail to reproduce the new data indicating a significant impact on our understanding of the underlying dynamics of η meson photoproduction. The peculiar nodal structure observed in existing T data close to threshold is not confirmed.
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Coleções: 01-internacional Base de dados: MEDLINE Tipo de estudo: Prognostic_studies Idioma: En Revista: Phys Rev Lett Ano de publicação: 2014 Tipo de documento: Article País de afiliação: Estados Unidos
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Coleções: 01-internacional Base de dados: MEDLINE Tipo de estudo: Prognostic_studies Idioma: En Revista: Phys Rev Lett Ano de publicação: 2014 Tipo de documento: Article País de afiliação: Estados Unidos