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Title: Dynamical model of φ meson photoproduction on the nucleon and 4He

Journal Article · · Physical Review C
ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [3]; ORCiD logo [4]
  1. Pukyong National Univ., Busan (Korea); Soongsil Univ., Seoul (Korea)
  2. Argonne National Lab. (ANL), Argonne, IL (United States)
  3. Pukyong National Univ., Busan (Korea); Asia Pacific Center for Theoretical Physics, Gyeongbuk (Korea)
  4. Kyungpook National Univ., Daegu (Korea); Asia Pacific Center for Theoretical Physics, Gyeongbuk (Korea)

We investigate φ meson photoproduction on the nucleon and the 4He targets within a dynamical model approach based on a Hamiltonian which describes the production mechanisms by the Pomeron-exchange, meson-exchanges, φ radiations, and nucleon resonance excitations mechanisms. The final φN interactions are included being described by the gluon-exchange, direct φN couplings, and the box-diagrams arising from the couplings with πN, ρN, KΛ, and KΣ channels. The parameters of the Hamiltonian are determined by the experimental data of γp → φp from the CLAS Collaboration. The resulting Hamiltonian is then used to predict the coherent φ-meson production on the 4He targets by using the distorted-wave impulse approximation. For the proton target, the final φN rescattering effects, as required by the unitarity condition, are found to be very weak, which supports the earlier calculations in the literature. For the 4He targets, the predicted differential cross sections are in good agreement with the data obtained by the LEPS Collaboration. Furthermore, the role of each mechanism in this reaction is discussed and predictions for a wide range of scattering angles are presented, which can be tested in future experiments.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1840051
Journal Information:
Physical Review C, Vol. 104, Issue 4; ISSN 2469-9985
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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Figures / Tables (14)