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Phys. Rev. C 74, 025201 (2006) [11 pages]

Nuclear mass number dependence of inclusive production of omega and phi mesons in 12 GeV p+A collisions

T. Tabaru, H. En'yo, R. Muto, M. Naruki, and S. Yokkaichi
RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan

J. Chiba, M. Ieiri, O. Sasaki, M. Sekimoto, and K. H. Tanaka
Institute of Particle and Nuclear Studies, KEK, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan

H. Funahashi, Y. Fukao, M. Kitaguchi, M. Ishino, H. Kanda, S. Mihara, T. Miyashita, K. Miwa, T. Murakami, T. Nakura, F. Sakuma, M. Togawa, S. Yamada, and Y. Yoshimura
Department of Physics, Kyoto University, Kitashirakawa, Sakyo-ku, Kyoto 606-8502, Japan

H. Hamagaki and K. Ozawa
Center for Nuclear Study, Graduate School of Science, University of Tokyo, 7-3-1 Hongo, Tokyo 113-0033, Japan
Received 14 March 2006; published 2 August 2006

The inclusive production of omega and phi mesons is studied in the backward region of the interaction of 12 GeV protons with polyethylene, carbon, and copper targets. The mesons are measured in e+e- decay channels. The production cross sections of the mesons are presented as functions of rapidity y and transverse momentum pT. The nuclear mass number dependences (A dependences) are found to be A0.710±0.021(stat)±0.037(syst) for omega mesons and A0.937±0.049(stat)±0.018(syst) for phi mesons in the region of 0.9<y<1.7 and pT<0.75 GeV/c.

©2006 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevC.74.025201
DOI: 10.1103/PhysRevC.74.025201
PACS: 14.40.Cs; 13.85.Ni; 13.85.Qk; 25.40.Ve
  • 14.40.Cs
    Other mesons with S=C=0, mass < 2.5 GeV
  • 13.85.Ni
    Hadron-induced inclusive production with identified hadrons (energy > 10 GeV)
  • 13.85.Qk
    Hadron-induced inclusive production with identified leptons, photons, or other nonhadronic particles (energy > 10 GeV)
  • 25.40.Ve
    Other nucleon-induced reactions above meson production thresholds (energies > 400 MeV)
  • YEAR: 2006

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