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Lepton flavor violating decays of B and K mesons in models with extended gauge group

文献类型:期刊论文

作者Fayyazuddin; Lu, CD; Lv CD(吕才典); Aslam, MJ
刊名INTERNATIONAL JOURNAL OF MODERN PHYSICS A
出版日期2018
卷号33期号:14-15页码:1850087
ISSN号0217-751X
关键词B decays beyond Standard Model gauge groups
DOI10.1142/S0217751X18500872
文献子类Article
英文摘要Lepton flavor violating (LFV) decays are forbidden in the Standard Model (SM) and to explore them one has to go beyond it. The flavor changing neutral current induced lepton flavor conserving and LFV decays of K and B mesons is discussed in the gauge group G = SU(2)(L)x U(1)(Y1) X SU(2)(X). The lepto-quark X-mu(+/- 2/3) corresponding to gauge group SU(2)(X) allows the quark lepton transitions and hence giving a framework to construct the effective Lagrangian for the LFV decays. The mass of lepto-quark m(X) provides a scale at which the gauge group G is broken to the SM gauge group. Using the most stringent experimental limit B(K-L(0) -> mu(-/+)e(+/-)) < 1.7 x 10(-12), the upper bound on the effective coupling constant (GX/GF)(2) < 1.1X 10(-1)0 is obtained for certain pairing of lepton and quark generations in the representation (2, 2) of the group G. Later, the effective Lagrangian for the LFV meson decays for the gauge group G = [SU(2)(L) x SU(2)(R) x U(1)(Y1)] x SU(2)(X) is constructed. Using B(K- -> pi(-)upsilon(upsilon) over bar)) = (1.7 +/- 1.1) x 10(-1)0, the bound on the ratio of effective couplings is obtained to be (GGxF)2 < 10-10. A number of decay modes are discussed which provide a promising area to test this model in the current and future particle physics experiments.
电子版国际标准刊号1793-656X
WOS研究方向Physics
语种英语
WOS记录号WOS:000433257500008
源URL[http://ir.ihep.ac.cn/handle/311005/285950]  
专题高能物理研究所_理论物理室
作者单位中国科学院高能物理研究所
推荐引用方式
GB/T 7714
Fayyazuddin,Lu, CD,Lv CD,et al. Lepton flavor violating decays of B and K mesons in models with extended gauge group[J]. INTERNATIONAL JOURNAL OF MODERN PHYSICS A,2018,33(14-15):1850087.
APA Fayyazuddin,Lu, CD,吕才典,&Aslam, MJ.(2018).Lepton flavor violating decays of B and K mesons in models with extended gauge group.INTERNATIONAL JOURNAL OF MODERN PHYSICS A,33(14-15),1850087.
MLA Fayyazuddin,et al."Lepton flavor violating decays of B and K mesons in models with extended gauge group".INTERNATIONAL JOURNAL OF MODERN PHYSICS A 33.14-15(2018):1850087.

入库方式: OAI收割

来源:高能物理研究所

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