发布时间：2025-04-30

论文名称：The K^- p ightarrow ηΛ reaction in an effective Lagrangian model

发表刊物：Phys.Rev. C

摘要：We report on a theoretical study of the     reaction near threshold by using an effective Lagrangian approach. The role of  channel  ,  channel     and  channel proton pole diagrams are considered. We show that the total cross sections data are well reproduced. However, only including the  wave   state and the background contribution from   and  channel are not enough to describe the bowl structures in the angular distribution of     reaction, which indicates that there should be higher partial waves contributing to this reaction in some energy region. Indeed, if we considered the contributions from a     resonance, we can describe the bowl structures, however, a rather small width (  MeV) of this resonance is needed.

合写作者：B. C. Liu and J. J. Xie

卷号：85

页面范围：038201

是否译文：否

发表时间：2012-01-06