Published June 2014 | Version v1
Journal article

Cross section ratio and angular distributions of the reaction p + d → 3He + η at 48.8 MeV and 59.8 MeV excess energy

Creators

  • 1. Uppsala University, Division of Nuclear Physics, Department of Physics and Astronomy, Box 516, Uppsala (Sweden)
  • 2. National Centre for Nuclear Research, Department of Nuclear Physics, Warsaw (Poland)
  • 3. Jagiellonian University, Institute of Physics, Krakow (Poland)
  • 4. Physikalisches Institut der Universitaet Tuebingen, Kepler Center fuer Astro- und Teilchenphysik, Tuebingen (Germany)
  • 5. Eberhard-Karls-Universitaet Tuebingen, Physikalisches Institut, Tuebingen (Germany)
  • 6. Westfaelische Wilhelms-Universitaet Muenster, Institut fuer Kernphysik, Muenster (Germany)
  • 7. National Centre for Nuclear Research, High Energy Physics Department, Warsaw (Poland)
  • 8. Indian Institute of Technology Bombay, Department of Physics, Mumbai, Maharashtra (India)
  • 9. Forschungszentrum Juelich, Juelich Center for Hadron Physics, Juelich (Germany)
  • 10. Forschungszentrum Juelich, Institut fuer Kernphysik, Juelich (Germany)
  • 11. Ruhr-Universitaet Bochum, Institut fuer Experimentalphysik I, Bochum (Germany)
  • 12. Forschungszentrum Juelich, Zentralinstitut fuer Engineering, Elektronik und Analytik, Juelich (Germany)
  • 13. Friedrich-Alexander-Universitaet Erlangen-Nuernberg, Physikalisches Institut, Erlangen (Germany)
  • 14. State Scientific Center of the Russian Federation, Institute for Theoretical and Experimental Physics, Moscow (Russian Federation)
  • 15. Justus-Liebig-Universitaet Giessen, II. Physikalisches Institut, Giessen (Germany)
  • 16. Indian Institute of Technology Indore, Department of Physics, Indore, Madhya Pradesh (India)
  • 17. Petersburg Nuclear Physics Institute, High Energy Physics Division, Leningrad district (Russian Federation)
  • 18. RWTH Aachen, III. Physikalisches Institut B, Physikzentrum, Aachen (Germany)
  • 19. Joint Institute for Nuclear Physics, Veksler and Baldin Laboratory of High Energiy Physics, Moscow region (Russian Federation)
  • 20. University of Silesia, August Chelkowski Institute of Physics, Katowice (Poland)
  • 21. Polish Academy of Sciences, The Henryk Niewodniczanski Institute of Nuclear Physics, Krakow (Poland)
  • 22. Petersburg Nuclear Physics Institute, High Energy Physics Division, Leningrad district (RU)
  • 23. Ruhr-Universitaet Bochum, Institut fuer Experimentalphysik I, Bochum (DE)
  • 24. Forschungszentrum Juelich, Juelich Center for Hadron Physics, Juelich (DE)
  • 25. Jagiellonian University, Institute of Physics, Krakow (PL)
  • 26. Uppsala University, Division of Nuclear Physics, Department of Physics and Astronomy, Box 516, Uppsala (SE)
  • 27. Indian Institute of Technology Indore, Department of Physics, Indore, Madhya Pradesh (IN)
  • 28. Forschungszentrum Juelich, Institut fuer Kernphysik, Juelich (DE)
  • 29. Indian Institute of Technology Bombay, Department of Physics, Mumbai, Maharashtra (IN)
  • 30. Joint Institute for Nuclear Physics, Dzhelepov Laboratory of Nuclear Problems, Moscow region (RU)
  • 31. State Scientific Center of the Russian Federation, Institute for Theoretical and Experimental Physics, Moscow (RU)
  • 32. High Energy Accelerator Research Organization KEK, Tsukuba, Ibaraki (JP)
  • 33. National Centre for Nuclear Research, Department of Cosmic Ray Physics, Lodz (PL)

Description

We present new data for angular distributions and on the cross section ratio of the p+d → 3He + η reaction at excess energies of Q = 48.8 MeV and Q = 59.8 MeV. The data have been obtained at the WASA-at-COSY experiment (Forschungszentrum Juelich) using a proton beam and a deuterium pellet target. While the shape of obtained angular distributions show only a slow variation with the energy, the new results indicate a distinct and unexpected total cross section fluctuation between Q = 20 MeV and Q = 60 MeV, which might indicate the variation of the production mechanism within this energy interval. (orig.)

Availability note (English)

Available from: http://dx.doi.org/10.1140/epja/i2014-14100-4

Additional details

Identifiers

Publishing Information

Journal Title
European Physical Journal. A
Journal Volume
50
Journal Issue
6
Journal Page Range
p. 1-8
ISSN
1434-6001

Optional Information