| Lepton flavor violating decays of b and k mesons in models with extended gauge group | |
| Fayyazuddin1; Aslam, Muhammad Jamil2,3; Lu, Cai-Dian3,4 | |
| 刊名 | International journal of modern physics a
 |
| 2018-05-30 | |
| 卷号 | 33期号:14-15页码:22 |
| 关键词 | B decays Beyond standard model Gauge groups |
| ISSN号 | 0217-751X |
| DOI | 10.1142/50217751x18500872 |
| 通讯作者 | Aslam, muhammad jamil(muhammadjamil.aslam@gmail.com) |
| 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. |
| WOS研究方向 | Physics |
| WOS类目 | Physics, Nuclear ; Physics, Particles & Fields |
| 语种 | 英语 |
| 出版者 | WORLD SCIENTIFIC PUBL CO PTE LTD |
| WOS记录号 | WOS:000433257500008 |
| 内容类型 | 期刊论文 |
| URI标识 | http://www.corc.org.cn/handle/1471x/2177507 |
| 专题 | 高能物理研究所 |
| 通讯作者 | Aslam, Muhammad Jamil |
| 作者单位 | 1.Natl Ctr Phys, Quaid I Azam Univ Campus, Islamabad 45320, Pakistan 2.Quaid I Azam Univ, Phys Dept, Islamabad 45320, Pakistan 3.Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China 4.Univ Chinese Acad Sci, Sch Phys, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Fayyazuddin,Aslam, Muhammad Jamil,Lu, Cai-Dian. 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):22. |
| APA | Fayyazuddin,Aslam, Muhammad Jamil,&Lu, Cai-Dian.(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),22. |
| 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):22. |
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