SUSY induced top quark FCNC decay t -> ch after Run I of LHC
文献类型：期刊论文
| 作者 | Yang, JM
|
| 刊名 | EUROPEAN PHYSICAL JOURNAL C
 |
| 出版日期 | 2014 |
| 卷号 | 74期号:9页码:3058 |
| ISSN号 | 1434-6044 |
| 关键词 | EVEN HIGGS BOSONS STANDARD MODEL MSSM SUPERSYMMETRY SEARCH COLLIDERS BREAKING PHYSICS MASSES |
| 通讯作者 | Cao, JJ (reprint author), Henan Normal Univ, Dept Phys, Xinxiang 453007, Peoples R China. |
| 英文摘要 | In light of the Higgs discovery and the nonobservation of sparticles at the LHC, we revisit the supersymmetric theory (SUSY) induced top quark flavor-changing decay into the Higgs boson. We perform a scan over the relevant SUSY parameter space by considering the constraints from the Higgs mass measurement, the LHC search for SUSY, the vacuum stability, the precision electroweak observables as well as B -> X-s gamma. We make the following observations: (1) In the Minimal Supersymmetric Standard Model (MSSM), the branching ratio of t -> ch can only reach 3.0 x 10(-6), which is about one order smaller than previous results obtained before the advent of the LHC. Among the considered constraints, the Higgs mass and the LHC search for sparticles are found to play an important role in limiting the prediction. (2) In the singlet extension of the MSSM, since the squark sector is less constrained by the Higgs mass, the branching ratio of t -> ch can reach the order of 10(-5) in the allowed parameter space. (3) The chiral-conserving mixings delta(LL) and delta(RR) may have remanent effects on t -> ch in the heavy SUSY limit. In the MSSM with squarks above 3 TeV and gluino above 4 TeV and meanwhile the CP-odd Higgs boson mass around 1 TeV, the branching ratio of t -> ch can still reach the order of 10(-8) under the constraints. |
| 学科主题 | Physics |
| 资助信息 | National Natural Science Foundation of China (NNSFC) [10821504, 11222548, 11305049, 11135003]; Program for New Century Excellent Talents in University; ARC Center of Excellence |
| 收录类别 | SCI |
| 原文出处 | http://dx.doi.org/10.1140/epjc/s10052-014-3058-1 |
| 语种 | 英语 |
| WOS记录号 | WOS:000350142100001 |
| 公开日期 | 2015-06-03 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/15650]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 推荐引用方式 GB/T 7714 | Yang, JM. SUSY induced top quark FCNC decay t -> ch after Run I of LHC[J]. EUROPEAN PHYSICAL JOURNAL C,2014,74(9):3058. |
| APA | Yang, JM.(2014).SUSY induced top quark FCNC decay t -> ch after Run I of LHC.EUROPEAN PHYSICAL JOURNAL C,74(9),3058. |
| MLA | Yang, JM."SUSY induced top quark FCNC decay t -> ch after Run I of LHC".EUROPEAN PHYSICAL JOURNAL C 74.9(2014):3058. |
入库方式： OAI收割
来源：理论物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。