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Coupling constant for Lambda(1405)(K)over-bar N
Xie, JJ; Liu, BC; An CS(安春生); An, CS
2013
发表期刊PHYSICAL REVIEW C
卷号88期号:1页码:15203
摘要The value of the Lambda(1405)(K) over bar N coupling constant g(Lambda(1405)(K) over bar) (N) is obtained by fitting it to the experimental data on the total cross sections of the K- p -> pi(0)Sigma(0) reaction. On the basis of an effective Lagrangian approach and isobar model, we show that the value vertical bar g(Lambda(1405)(K) over bar) (N)vertical bar = 1.51 +/- 0.10 could be extracted from the available experimental data by assuming that the s-channel Lambda(1405) resonance plays a dominant role, whereas, the background contributions from the s-channel Lambda(1115), t-channel K*, and u-channel nucleon pole processes are small and can be neglected. However, the u-channel nucleon pole diagram may also give an important contribution in the present calculations. After the background contributions are taken into account, the above value of g(Lambda(1405)(K) over bar) (N) is reduced to vertical bar g(Lambda(1405)(K) over bar) (N)vertical bar = 0.77 +/- 0.07, which is not supported by the previous calculations and the recent CLAS measurements. The theoretical calculations on differential cross sections are also presented, which can be checked by future experiments.
学科领域Physics
DOI10.1103/PhysRevC.88.015203
收录类别SCI
WOS记录号WOS:000321999100006
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被引频次:14[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/224499
专题理论物理室
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GB/T 7714
Xie, JJ,Liu, BC,An CS,et al. Coupling constant for Lambda(1405)(K)over-bar N[J]. PHYSICAL REVIEW C,2013,88(1):15203.
APA Xie, JJ,Liu, BC,安春生,&An, CS.(2013).Coupling constant for Lambda(1405)(K)over-bar N.PHYSICAL REVIEW C,88(1),15203.
MLA Xie, JJ,et al."Coupling constant for Lambda(1405)(K)over-bar N".PHYSICAL REVIEW C 88.1(2013):15203.
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