Photoproduction of φ mesons from the proton: Polarization observables and strangeness in the nucleon

Alexander I. Titov, Yongseok Oh, Shin Nan Yang, and Tosiyuki Morii
Phys. Rev. C 58, 2429 – Published 1 October 1998
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Abstract

The polarization observables in φ meson photoproduction are studied to probe the strangeness content of the nucleon. In addition to the dominant diffractive production and the one-pion-exchange process, we take into account the direct knockout mechanism that arises from the possible hidden strangeness content of the nucleon. We find that some double polarization observables are very sensitive to the strangeness content of the proton because of the different spin structures of the amplitudes associated with different mechanisms. This suggests that such measurements could be very useful in probing the strangeness content in the proton. The orbitally excited quark-cluster configurations in the proton are included in the calculation and found to have little effect.

  • Received 15 April 1998

DOI:https://doi.org/10.1103/PhysRevC.58.2429

©1998 American Physical Society

Authors & Affiliations

Alexander I. Titov1,*, Yongseok Oh2,†, Shin Nan Yang3,‡, and Tosiyuki Morii4,§

  • 1Bogoliubov Laboratory of Theoretical Physics, JINR, 141980 Dubna, Russia
  • 2Research Institute for Basic Sciences and Department of Physics, Seoul National University, Seoul 151-742, Korea
  • 3Department of Physics, National Taiwan University, Taipei, Taiwan 10617, Republic of China
  • 4Faculty of Human Development, Kobe University, 3-11 Tsurukabuto, Nada, Kobe 675, Japan

  • *Electronic address: atitov@thsun1.jinr.ru
  • Electronic address: yoh@phya.snu.ac.kr
  • Electronic address: snyang@phys.ntu.edu.tw
  • §Electronic address: morii@kobe-u.ac.jp

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Vol. 58, Iss. 4 — October 1998

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