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Physics of Atomic Nuclei

, Volume 67, Issue 8, pp 1495–1504 | Cite as

Single-spin asymmetry of inclusive π0-meson production in 40-GeV pion interactions with a polarized target in the target-fragmentation region

  • A. N. Vasiliev
  • V. N. Grishin
  • A. A. Derevschikov
  • V. I. Kravtsov
  • Yu. A. Matulenko
  • V. A. Medvedev
  • Yu. M. Melnik
  • A. P. Meschanin
  • D. A. Morozov
  • V. V. Mochalov
  • A. I. Mysnik
  • L. V. Nogach
  • S. B. Nurushev
  • A. F. Prudkoglyad
  • P. A. Semenov
  • L. F. Soloviev
  • V. L. Solovianov
  • M. N. Ukhanov
  • Yu. V. Kharlov
  • V. Yu. Khodyrev
  • B. V. Chujko
  • K. E. Shestermanov
  • A. E. Yakutin
  • N. S. Borisov
  • V. N. Matafonov
  • A. B. Neganov
  • Yu. A. Plis
  • Yu. A. Usov
  • A. N. Fedorov
  • A. A. Lukhanin
Elementary Particles and Fields Experiment

Abstract

Data on the single-spin asymmetry (AN) of inclusive π0 production in 40-GeV pion interactions with a polarized target, π+→π0+X, are presented for the target-fragmentation region. The result is AN=(−13.8±3.8)% for −0.8<xF<−0.4 and 1<pT<2 GeV/c and is compatible with zero for −0.4<xF<−0.1 and 0.5<pT<1.5 GeV/c. At a π0 momentum of about 1.7 GeV/c in the c.m. frame, the asymmetry becomes nonzero both in the central and in the target-fragmentation region. The behavior of the asymmetry is similar to that observed in the beam-fragmentation region of the E-704 (FNAL, 200 GeV) and STAR (BNL, 20 TeV) experiments, which employed a polarized proton beam.

Keywords

Elementary Particle Proton Beam Polarize Proton Beam Pion Interaction 
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

© MAIK "Nauka/Interperiodica" 2004

Authors and Affiliations

  • A. N. Vasiliev
    • 3
  • V. N. Grishin
    • 3
  • A. A. Derevschikov
    • 3
  • V. I. Kravtsov
    • 3
  • Yu. A. Matulenko
    • 3
  • V. A. Medvedev
    • 3
  • Yu. M. Melnik
    • 3
  • A. P. Meschanin
    • 3
  • D. A. Morozov
    • 3
  • V. V. Mochalov
    • 3
  • A. I. Mysnik
    • 3
  • L. V. Nogach
    • 3
  • S. B. Nurushev
    • 3
  • A. F. Prudkoglyad
    • 3
  • P. A. Semenov
    • 3
  • L. F. Soloviev
    • 3
  • V. L. Solovianov
    • 3
  • M. N. Ukhanov
    • 3
  • Yu. V. Kharlov
    • 3
  • V. Yu. Khodyrev
    • 3
  • B. V. Chujko
    • 3
  • K. E. Shestermanov
    • 3
  • A. E. Yakutin
    • 3
  • N. S. Borisov
    • 1
    • 3
  • V. N. Matafonov
    • 1
    • 3
  • A. B. Neganov
    • 1
    • 3
  • Yu. A. Plis
    • 1
    • 3
  • Yu. A. Usov
    • 1
    • 3
  • A. N. Fedorov
    • 1
    • 3
  • A. A. Lukhanin
    • 2
    • 3
  1. 1.Joint Institute for Nuclear ResearchDubna, Moscow oblastRussia
  2. 2.Kharkov Institute for Physics and TechnologyKharkovUkraine
  3. 3.Institute for High Energy PhysicsProtvino, Moscow oblastRussia

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