Physics Letters B (Apr 2016)
Measurement of the absolute differential cross section of proton–proton elastic scattering at small angles
- D. Mchedlishvili,
- D. Chiladze,
- S. Dymov,
- Z. Bagdasarian,
- S. Barsov,
- R. Gebel,
- B. Gou,
- M. Hartmann,
- A. Kacharava,
- I. Keshelashvili,
- A. Khoukaz,
- P. Kulessa,
- A. Kulikov,
- A. Lehrach,
- N. Lomidze,
- B. Lorentz,
- R. Maier,
- G. Macharashvili,
- S. Merzliakov,
- S. Mikirtychyants,
- M. Nioradze,
- H. Ohm,
- D. Prasuhn,
- F. Rathmann,
- V. Serdyuk,
- D. Schroer,
- V. Shmakova,
- R. Stassen,
- H.J. Stein,
- H. Stockhorst,
- I.I. Strakovsky,
- H. Ströher,
- M. Tabidze,
- A. Täschner,
- S. Trusov,
- D. Tsirkov,
- Yu. Uzikov,
- Yu. Valdau,
- C. Wilkin,
- R.L. Workman,
- P. Wüstner
Affiliations
- D. Mchedlishvili
- High Energy Physics Institute, Tbilisi State University, GE-0186 Tbilisi, Georgia; 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
- Z. Bagdasarian
- High Energy Physics Institute, Tbilisi State University, GE-0186 Tbilisi, Georgia; Institut für Kernphysik, Forschungszentrum Jülich, D-52425 Jülich, Germany
- 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
- A. Kacharava
- 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
- G. Macharashvili
- High Energy Physics Institute, Tbilisi State University, GE-0186 Tbilisi, Georgia; Laboratory of Nuclear Problems, JINR, RU-141980 Dubna, Russia
- 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
- 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
- D. Schroer
- Institut für Kernphysik, Universität Münster, D-48149 Münster, Germany
- V. Shmakova
- Laboratory of Nuclear Problems, JINR, RU-141980 Dubna, Russia
- R. Stassen
- Institut für Kernphysik, Forschungszentrum Jülich, D-52425 Jülich, Germany
- H.J. Stein
- 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, D.C. 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; Corresponding author.
- R.L. Workman
- Data Analysis Center at the Institute for Nuclear Studies, Department of Physics, The George Washington University, Washington, D.C. 20052, USA
- P. Wüstner
- Zentralinstitut für Engineering, Elektronik und Analytik, Forschungszentrum Jülich, D-52425 Jülich, Germany
- Journal volume & issue
-
Vol. 755
pp. 92 – 96
Abstract
The differential cross section for proton–proton elastic scattering has been measured at a beam kinetic energy of 1.0 GeV and in 200 MeV steps from 1.6 to 2.8 GeV for centre-of-mass angles in the range from 12°–16° to 25°–30°, depending on the energy. A precision in the overall normalisation of typically 3% was achieved by studying the energy losses of the circulating beam of the COSY storage ring as it passed repeatedly through the windowless hydrogen target of the ANKE magnetic spectrometer. It is shown that the data have a significant impact upon the results of a partial wave analysis. After extrapolating the differential cross sections to the forward direction, the results are broadly compatible with the predictions of forward dispersion relations. Keywords: Proton–proton elastic scattering, Differential cross section
