K 0 Λ photoproduction off the neutron with nucleon resonances

Kim, Sang-Ho (Asia Pacific Center for Theoretical Physics (APCTP), Pohang, 37673, Republic of Korea) ; Kim, Hyun-Chul  (Department of Physics, Inha University, Incheon, 22212, Republic of Korea) (Advanced Science Research Center, Japan Atomic Energy Agency, Shirakata, Tokai, Ibaraki, 319-1195, Japan) (School of Physics, Korea Institute for Advanced Study (KIAS), Seoul, 02455, Republic of Korea)

22 September 2018

Abstract: We investigate kaon photoproduction off the neutron target, i.e., γn→K0Λ , focusing on the role of nucleon resonances given in the Review of Particle Data Group in the range of s≈1600–2200 MeV. We employ an effective Lagrangian method and a Regge approach. The strong couplings of nucleon resonances with K Λ vertices are constrained by quark model predictions. The numerical results of the total and differential cross sections are found to be in qualitative agreement with the recent CLAS and FOREST experimental data. We discuss the effects of the narrow nucleon resonance N(1685,1/2+) on both the total and differential cross sections near the threshold energy. In addition, we present the results of the beam asymmetry as a prediction.

Published in: Physics letters B 786 (2018) 156-164
Published by: Elsevier
DOI: 10.1016/j.physletb.2018.09.041
License: CC-BY-3.0

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