【摘 要】
：
In our previous work[Phys.Rev.C 101,014003 (2020)],the photoproduction reaction γp → K*+Λ was investigated within an effective Lagrangian approach.The reaction amplitudes were constructed by including the t-channel K,K*,and κ exchanges,u-channel Λ,∑,and ∑
【机 构】
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School of Nuclear Science and Technology,University of Chinese Academy of Sciences,Beijing 101408,Ch
论文部分内容阅读
In our previous work[Phys.Rev.C 101,014003 (2020)],the photoproduction reaction γp → K*+Λ was investigated within an effective Lagrangian approach.The reaction amplitudes were constructed by including the t-channel K,K*,and κ exchanges,u-channel Λ,∑,and ∑* exchanges,s-channel N,N(2000)5/2+,and N(2060)5/2-exchanges,and interaction current.The data on the differential cross sections and spin density matrix elements were described simultaneously.In this study,we investigate the photoproduction reaction γn → K*0Λ based on the same reaction mechanism as that of γp→ K*+Λ to obtain a unified description of the data for γp→ K*+Λ and γn → K*0Λ within the same model.All hadronic coupling constants,form factor cutoffs,and the resonance masses and widths in the present calculations remain the same as in our previous work for γp → K*+Λ.The available differ-ential cross-section data for γn→ K*0Λ are well reproduced.Further analysis shows that the cross sections of γn-→ K*0Λ are dominated by the contributions of the t-channel K exchange,while the s-channel N(2000)5/2+ and N(2060)5/2-exchanges also provide considerable contributions.
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