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Xie, JJ; Liu, BC; An, CS; Xie, JJ (reprint author), Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China.
Coupling constant for Lambda(1405)(K)over-bar N
Source PublicationPHYSICAL REVIEW C
Language英语
KeywordSu(3) Symmetry Resonances Scattering Nucleon Lambda State Model Eta Pp
AbstractThe 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.
2013
ISSN0556-2813
Volume88Issue:1Pages:15203
Subject AreaPhysics
Indexed BySCI
Funding OrganizationNational Natural Science Foundation of China [11105126, 10905046, 11205164] ; National Natural Science Foundation of China [11105126, 10905046, 11205164] ; National Natural Science Foundation of China [11105126, 10905046, 11205164] ; National Natural Science Foundation of China [11105126, 10905046, 11205164]
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Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/15323
Collection理论物理所科研产出_SCI论文
Corresponding AuthorXie, JJ (reprint author), Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China.
Recommended Citation
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,An, CS,&Xie, JJ .(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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