caa a22 4500 445872438 CHVBK 20180317145516.0 cr unu---uuuuu 170323e20110301xx s 000 0 eng 10.1140/epja/i2011-11036-1 doi (NATIONALLICENCE)springer-10.1140/epja/i2011-11036-1 Measurement of the helicity-dependent total cross-section for the $ \gamma$n $ \rightarrow$ p$ \pi^{-}_{}$ $ \pi^{0}_{}$ reaction [Elektronische Daten] [J. Ahrens, S. Altieri, J. Annand, H. Arends, R. Beck, M. 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. 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. Weller] Abstract.: The helicity dependence of the total cross-section for the $ \gamma$ n $ \rightarrow$ p $ \pi^{-}_{}$ $ \pi^{0}_{}$ reaction has been measured for the first time at incident photon energies from 450 to 800MeV. The measurement was performed with the large-acceptance detector DAPHNE at the tagged photon beam facility of the MAMI accelerator in Mainz. Both the measured unpolarized and the helicity-dependent observables are not well described by the existing theoretical models. SIF, Springer-Verlag Berlin Heidelberg, 2011 Ahrens J. Institut für Kernphysik, Universität Mainz, D-55099, Mainz, Germany aut Altieri S. INFN, Sezione di Pavia, I-27100, Pavia, Italy aut Annand J. SUPA, School of Physics and Astronomy, University of Glasgow, G12 8QQ, Glasgow, UK aut Arends H. Institut für Kernphysik, Universität Mainz, D-55099, Mainz, Germany aut Beck R. Institut für Kernphysik, Universität Mainz, D-55099, Mainz, Germany aut Blackston M. Department of Physics, Duke University, 27708, Durham, NC, USA aut Bradtke C. Physikalisches Institut, Universität Bonn, D-53115, Bonn, Germany aut Braghieri A. INFN, Sezione di Pavia, I-27100, Pavia, Italy aut d'Hose N. CEA Saclay, DSM/DAPNIA/SPhN, F-91191, Gif-sur-Yvette Cedex, France aut Dutz H. Physikalisches Institut, Universität Bonn, D-53115, Bonn, Germany aut Fix A. Laboratory of Mathematical Physics, Tomsk Polytechnic University, 634050, Tomsk, Russia aut Heid E. Institut für Kernphysik, Universität Mainz, D-55099, Mainz, Germany aut Jahn O. Institut für Kernphysik, Universität Mainz, D-55099, Mainz, Germany aut Klein F. Physikalisches Institut, Universität Bonn, D-53115, Bonn, Germany aut Kondratiev R. INR, Academy of Science, Moscow, Russia aut Lang M. Institut für Kernphysik, Universität Mainz, D-55099, Mainz, Germany aut Lisin V. INR, Academy of Science, Moscow, Russia aut Martinez-Fabregate M. Institut für Kernphysik, Universität Mainz, D-55099, Mainz, Germany aut McGeorge J. SUPA, School of Physics and Astronomy, University of Glasgow, G12 8QQ, Glasgow, UK aut Meyer W. Insitut für Experimentalphysik, Ruhr-Universität Bochum, D-44801, Bochum, Germany aut Panzeri A. INFN, Sezione di Pavia, I-27100, Pavia, Italy aut Pedroni P. INFN, Sezione di Pavia, I-27100, Pavia, Italy aut Pinelli T. INFN, Sezione di Pavia, I-27100, Pavia, Italy aut Protopopescu D. SUPA, School of Physics and Astronomy, University of Glasgow, G12 8QQ, Glasgow, UK aut Reicherz G. Insitut für Experimentalphysik, Ruhr-Universität Bochum, D-44801, Bochum, Germany aut Rohlof Ch Physikalisches Institut, Universität Bonn, D-53115, Bonn, Germany aut Rosner G. SUPA, School of Physics and Astronomy, University of Glasgow, G12 8QQ, Glasgow, UK aut Rostomyan T. Subatomaire en Stralingsfysica, Universiteit Gent, B-9000, Gent, Belgium aut Ryckbosch D. Subatomaire en Stralingsfysica, Universiteit Gent, B-9000, Gent, Belgium aut Tamas G. Institut für Kernphysik, Universität Mainz, D-55099, Mainz, Germany aut Thomas A. Institut für Kernphysik, Universität Mainz, D-55099, Mainz, Germany aut Weller H. Department of Physics, Duke University, 27708, Durham, NC, USA aut The European Physical Journal A Springer-Verlag 47/3(2011-03-01), 1-8 1434-6001 47:3<1 2011 47 10050 https://doi.org/10.1140/epja/i2011-11036-1 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1140/epja/i2011-11036-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ahrens J. Institut für Kernphysik, Universität Mainz, D-55099, Mainz, Germany aut NATIONALLICENCE 700 1- Altieri S. INFN, Sezione di Pavia, I-27100, Pavia, Italy aut NATIONALLICENCE 700 1- Annand J. SUPA, School of Physics and Astronomy, University of Glasgow, G12 8QQ, Glasgow, UK aut NATIONALLICENCE 700 1- Arends H. Institut für Kernphysik, Universität Mainz, D-55099, Mainz, Germany aut NATIONALLICENCE 700 1- Beck R. Institut für Kernphysik, Universität Mainz, D-55099, Mainz, Germany aut NATIONALLICENCE 700 1- Blackston M. Department of Physics, Duke University, 27708, Durham, NC, USA aut NATIONALLICENCE 700 1- Bradtke C. Physikalisches Institut, Universität Bonn, D-53115, Bonn, Germany aut NATIONALLICENCE 700 1- Braghieri A. INFN, Sezione di Pavia, I-27100, Pavia, Italy aut NATIONALLICENCE 700 1- d'Hose N. CEA Saclay, DSM/DAPNIA/SPhN, F-91191, Gif-sur-Yvette Cedex, France aut NATIONALLICENCE 700 1- Dutz H. Physikalisches Institut, Universität Bonn, D-53115, Bonn, Germany aut NATIONALLICENCE 700 1- Fix A. Laboratory of Mathematical Physics, Tomsk Polytechnic University, 634050, Tomsk, Russia aut NATIONALLICENCE 700 1- Heid E. Institut für Kernphysik, Universität Mainz, D-55099, Mainz, Germany aut NATIONALLICENCE 700 1- Jahn O. Institut für Kernphysik, Universität Mainz, D-55099, Mainz, Germany aut NATIONALLICENCE 700 1- Klein F. Physikalisches Institut, Universität Bonn, D-53115, Bonn, Germany aut NATIONALLICENCE 700 1- Kondratiev R. INR, Academy of Science, Moscow, Russia aut NATIONALLICENCE 700 1- Lang M. Institut für Kernphysik, Universität Mainz, D-55099, Mainz, Germany aut NATIONALLICENCE 700 1- Lisin V. INR, Academy of Science, Moscow, Russia aut NATIONALLICENCE 700 1- Martinez-Fabregate M. Institut für Kernphysik, Universität Mainz, D-55099, Mainz, Germany aut NATIONALLICENCE 700 1- McGeorge J. SUPA, School of Physics and Astronomy, University of Glasgow, G12 8QQ, Glasgow, UK aut NATIONALLICENCE 700 1- Meyer W. Insitut für Experimentalphysik, Ruhr-Universität Bochum, D-44801, Bochum, Germany aut NATIONALLICENCE 700 1- Panzeri A. INFN, Sezione di Pavia, I-27100, Pavia, Italy aut NATIONALLICENCE 700 1- Pedroni P. INFN, Sezione di Pavia, I-27100, Pavia, Italy aut NATIONALLICENCE 700 1- Pinelli T. INFN, Sezione di Pavia, I-27100, Pavia, Italy aut NATIONALLICENCE 700 1- Protopopescu D. SUPA, School of Physics and Astronomy, University of Glasgow, G12 8QQ, Glasgow, UK aut NATIONALLICENCE 700 1- Reicherz G. Insitut für Experimentalphysik, Ruhr-Universität Bochum, D-44801, Bochum, Germany aut NATIONALLICENCE 700 1- Rohlof Ch Physikalisches Institut, Universität Bonn, D-53115, Bonn, Germany aut NATIONALLICENCE 700 1- Rosner G. SUPA, School of Physics and Astronomy, University of Glasgow, G12 8QQ, Glasgow, UK aut NATIONALLICENCE 700 1- Rostomyan T. Subatomaire en Stralingsfysica, Universiteit Gent, B-9000, Gent, Belgium aut NATIONALLICENCE 700 1- Ryckbosch D. Subatomaire en Stralingsfysica, Universiteit Gent, B-9000, Gent, Belgium aut NATIONALLICENCE 700 1- Tamas G. Institut für Kernphysik, Universität Mainz, D-55099, Mainz, Germany aut NATIONALLICENCE 700 1- Thomas A. Institut für Kernphysik, Universität Mainz, D-55099, Mainz, Germany aut NATIONALLICENCE 700 1- Weller H. Department of Physics, Duke University, 27708, Durham, NC, USA aut NATIONALLICENCE 773 0- The European Physical Journal A Springer-Verlag 47/3(2011-03-01), 1-8 1434-6001 47:3<1 2011 47 10050 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer