Physics Letters B (Dec 2014)
Measurement of the analysing power in proton–proton elastic scattering at small angles
- Z. Bagdasarian,
- D. Chiladze,
- S. Dymov,
- A. Kacharava,
- G. Macharashvili,
- S. Barsov,
- R. Gebel,
- B. Gou,
- M. Hartmann,
- I. Keshelashvili,
- A. Khoukaz,
- P. Kulessa,
- A. Kulikov,
- A. Lehrach,
- N. Lomidze,
- B. Lorentz,
- R. Maier,
- D. Mchedlishvili,
- S. Merzliakov,
- S. Mikirtychyants,
- M. Nioradze,
- H. Ohm,
- M. Papenbrock,
- D. Prasuhn,
- F. Rathmann,
- V. Serdyuk,
- V. Shmakova,
- R. Stassen,
- H. Stockhorst,
- I.I. Strakovsky,
- H. Ströher,
- M. Tabidze,
- A. Täschner,
- S. Trusov,
- D. Tsirkov,
- Yu. Uzikov,
- Yu. Valdau,
- C. Wilkin,
- R.L. Workman
Affiliations
- Z. Bagdasarian
- High Energy Physics Institute, Tbilisi State University, GE-0186 Tbilisi, Georgia; Institut für Kernphysik, Forschungszentrum Jülich, D-52425 Jülich, Germany; Corresponding author at: Institut für Kernphysik, Forschungszentrum Jülich, D-52425 Jülich, Germany.
- D. Chiladze
- High Energy Physics Institute, Tbilisi State University, GE-0186 Tbilisi, Georgia; Institut für Kernphysik, Forschungszentrum Jülich, D-52425 Jülich, Germany
- S. Dymov
- Laboratory of Nuclear Problems, JINR, RU-141980 Dubna, Russia; Institut für Kernphysik, Forschungszentrum Jülich, D-52425 Jülich, Germany
- A. Kacharava
- Institut für Kernphysik, Forschungszentrum Jülich, D-52425 Jülich, Germany
- G. Macharashvili
- High Energy Physics Institute, Tbilisi State University, GE-0186 Tbilisi, Georgia; Laboratory of Nuclear Problems, JINR, RU-141980 Dubna, Russia
- S. Barsov
- High Energy Physics Department, Petersburg Nuclear Physics Institute, RU-188350 Gatchina, Russia
- R. Gebel
- Institut für Kernphysik, Forschungszentrum Jülich, D-52425 Jülich, Germany
- B. Gou
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; Institut für Kernphysik, Forschungszentrum Jülich, D-52425 Jülich, Germany
- M. Hartmann
- Institut für Kernphysik, Forschungszentrum Jülich, D-52425 Jülich, Germany
- I. Keshelashvili
- Institut für Kernphysik, Forschungszentrum Jülich, D-52425 Jülich, Germany
- A. Khoukaz
- Institut für Kernphysik, Universität Münster, D-48149 Münster, Germany
- P. Kulessa
- H. Niewodniczański Institute of Nuclear Physics PAN, PL-31342 Kraków, Poland
- A. Kulikov
- Laboratory of Nuclear Problems, JINR, RU-141980 Dubna, Russia
- A. Lehrach
- Institut für Kernphysik, Forschungszentrum Jülich, D-52425 Jülich, Germany
- N. Lomidze
- High Energy Physics Institute, Tbilisi State University, GE-0186 Tbilisi, Georgia
- B. Lorentz
- Institut für Kernphysik, Forschungszentrum Jülich, D-52425 Jülich, Germany
- R. Maier
- Institut für Kernphysik, Forschungszentrum Jülich, D-52425 Jülich, Germany
- D. Mchedlishvili
- High Energy Physics Institute, Tbilisi State University, GE-0186 Tbilisi, Georgia; Institut für Kernphysik, Forschungszentrum Jülich, D-52425 Jülich, Germany
- S. Merzliakov
- Laboratory of Nuclear Problems, JINR, RU-141980 Dubna, Russia; Institut für Kernphysik, Forschungszentrum Jülich, D-52425 Jülich, Germany
- S. Mikirtychyants
- Institut für Kernphysik, Forschungszentrum Jülich, D-52425 Jülich, Germany; High Energy Physics Department, Petersburg Nuclear Physics Institute, RU-188350 Gatchina, Russia
- M. Nioradze
- High Energy Physics Institute, Tbilisi State University, GE-0186 Tbilisi, Georgia
- H. Ohm
- Institut für Kernphysik, Forschungszentrum Jülich, D-52425 Jülich, Germany
- M. Papenbrock
- Institut für Kernphysik, Universität Münster, D-48149 Münster, Germany
- D. Prasuhn
- Institut für Kernphysik, Forschungszentrum Jülich, D-52425 Jülich, Germany
- F. Rathmann
- Institut für Kernphysik, Forschungszentrum Jülich, D-52425 Jülich, Germany
- V. Serdyuk
- Institut für Kernphysik, Forschungszentrum Jülich, D-52425 Jülich, Germany
- V. Shmakova
- Laboratory of Nuclear Problems, JINR, RU-141980 Dubna, Russia
- R. Stassen
- Institut für Kernphysik, Forschungszentrum Jülich, D-52425 Jülich, Germany
- H. Stockhorst
- Institut für Kernphysik, Forschungszentrum Jülich, D-52425 Jülich, Germany
- I.I. Strakovsky
- Data Analysis Center at the Institute for Nuclear Studies, Department of Physics, The George Washington University, Washington, DC 20052, USA
- H. Ströher
- Institut für Kernphysik, Forschungszentrum Jülich, D-52425 Jülich, Germany
- M. Tabidze
- High Energy Physics Institute, Tbilisi State University, GE-0186 Tbilisi, Georgia
- A. Täschner
- Institut für Kernphysik, Universität Münster, D-48149 Münster, Germany
- S. Trusov
- Institut für Kern- und Hadronenphysik, Forschungszentrum Rossendorf, D-01314 Dresden, Germany; Department of Physics, M.V. Lomonosov Moscow State University, RU-119991 Moscow, Russia
- D. Tsirkov
- Laboratory of Nuclear Problems, JINR, RU-141980 Dubna, Russia
- Yu. Uzikov
- Laboratory of Nuclear Problems, JINR, RU-141980 Dubna, Russia
- Yu. Valdau
- High Energy Physics Department, Petersburg Nuclear Physics Institute, RU-188350 Gatchina, Russia; Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, D-53115 Bonn, Germany
- C. Wilkin
- Physics and Astronomy Department, UCL, London WC1E 6BT, UK
- R.L. Workman
- Data Analysis Center at the Institute for Nuclear Studies, Department of Physics, The George Washington University, Washington, DC 20052, USA
- Journal volume & issue
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Vol. 739
pp. 152 – 156
Abstract
The proton analysing power in p→p elastic scattering has been measured at small angles at COSY-ANKE at 796 MeV and five other beam energies between 1.6 and 2.4 GeV using a polarised proton beam. The asymmetries obtained by detecting the fast proton in the ANKE forward detector or the slow recoil proton in a silicon tracking telescope are completely consistent. Although the analysing power results agree well with the many published data at 796 MeV, and also with the most recent partial wave solution at this energy, the ANKE data at the higher energies lie well above the predictions of this solution at small angles. An updated phase shift analysis that uses the ANKE results together with the World data leads to a much better description of these new measurements. Keywords: Proton–proton elastic scattering, Analysing power, Phase shift analysis
