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Physics of Atomic Nuclei

, Volume 77, Issue 5, pp 595–601 | Cite as

Analyzing Power in the Reaction p + p π 0 + X in the polarized-target fragmentation region at an energy of 50 GeV

  • V. V. Abramov
  • N. I. Belikov
  • A. N. Vasiliev
  • Yu. M. Goncharenko
  • V. N. Grishin
  • A. M. Davydenko
  • A. A. Derevshchikov
  • V. A. Kormilitsyn
  • Yu. M. Melnik
  • A. P. Meshchanin
  • N. G. Minaev
  • D. A. Morozov
  • V. V. MochalovEmail author
  • L. V. Nogach
  • S. B. Nurushev
  • A. F. Prudkoglyad
  • S. V. Ryzhikov
  • A. V. Ryazantsev
  • P. A. Semenov
  • L. F. Soloviev
  • A. E. Yakutin
  • N. A. Bazhanov
  • N. S. Borisov
  • V. G. Kolomiets
  • A. B. Lazarev
  • A. B. Neganov
  • Yu. A. Plis
  • Yu. A. Usov
  • A. N. Fedorov
  • O. N. Shchevelev
  • A. A. Belyaev
  • A. A. Lukhanin
  • The PROZA-M Collaboration
Elementary Particles and Fields Experiment

Abstract

The results obtained by measuring, at the U-70 accelerator in Protvino, the single-spin asymmetry A N in the reaction p + p → π0 + X at a beam energy of 50 GeV in the Feynman variable range of −0.6 < x F < −0.1 are presented. The asymmetry A N is close to zero at small |x F | and grows in magnitude with |x F |, reaching 6.4% in the region of |x F | > 0.25. The results of these measurements agree with data of the E704 experiment on the asymmetry of π 0 mesons at the Fermi National Accelerator Laboratory in the region of polarized-beam fragmentation and with the results of measurements in the region of polarized-target fragmentation that were performed in Protvino by using a 40-GeV π -meson beam and a 70-GeV proton beam.

Keywords

Atomic Nucleus Kinematical Region Photon Pair Electromagnetic Calorimeter Fermi National Accelerator Laboratory 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Pleiades Publishing, Ltd. 2014

Authors and Affiliations

  • V. V. Abramov
    • 1
  • N. I. Belikov
    • 1
  • A. N. Vasiliev
    • 1
  • Yu. M. Goncharenko
    • 1
  • V. N. Grishin
    • 1
  • A. M. Davydenko
    • 1
  • A. A. Derevshchikov
    • 1
  • V. A. Kormilitsyn
    • 1
  • Yu. M. Melnik
    • 1
  • A. P. Meshchanin
    • 1
  • N. G. Minaev
    • 1
  • D. A. Morozov
    • 1
  • V. V. Mochalov
    • 1
    Email author
  • L. V. Nogach
    • 1
  • S. B. Nurushev
    • 1
  • A. F. Prudkoglyad
    • 1
  • S. V. Ryzhikov
    • 1
  • A. V. Ryazantsev
    • 1
  • P. A. Semenov
    • 1
  • L. F. Soloviev
    • 1
  • A. E. Yakutin
    • 1
  • N. A. Bazhanov
    • 2
  • N. S. Borisov
    • 2
  • V. G. Kolomiets
    • 2
  • A. B. Lazarev
    • 2
  • A. B. Neganov
    • 2
  • Yu. A. Plis
    • 2
  • Yu. A. Usov
    • 2
  • A. N. Fedorov
    • 2
  • O. N. Shchevelev
    • 2
  • A. A. Belyaev
    • 3
  • A. A. Lukhanin
    • 3
  • The PROZA-M Collaboration
  1. 1.Institute for High Energy PhysicsProtvino, Moscow oblastRussia
  2. 2.Joint Institute for Nuclear ResearchDubna, Moscow oblastRussia
  3. 3.Kharkiv Institute for Physics and TechnologyKharkivUkraine

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