Top quark forward-backward asymmetry, flavor-changing neutral-current decays, and like-sign pair production as a joint probe of new physics
文献类型：期刊论文
| 作者 | Yang, JM
|
| 刊名 | PHYSICAL REVIEW D
 |
| 出版日期 | 2011 |
| 卷号 | 84期号:7页码:74001 |
| ISSN号 | 1550-7998 |
| 关键词 | MINIMAL SUPERSYMMETRIC MODEL STANDARD MODEL RARE DECAYS 3RD-FAMILY QUARKS FCNC COUPLINGS ONE-LOOP LHC COLLIDERS SUSY OPERATORS |
| 通讯作者 | Cao, JJ (reprint author), Henan Normal Univ, Coll Phys & Informat Engn, Xinxiang 453007, Peoples R China. |
| 英文摘要 | The anomaly of the top quark forward-backward asymmetry A(FB)(t) observed at the Tevatron can be explained by the t-channel exchange of a neutral gauge boson (Z') which has sizable flavor-changing coupling for top and up quarks. This gauge boson can also induce the top quark flavor-changing neutral-current (FCNC) decays and the like-sign top pair production at the LHC. In this work, we focus on two models which predict such a Z', namely, the left-right model and the U(1)(X) model, to investigate the correlated effects on A(FB)(t), the FCNC decays t -> uV (V = g, Z, gamma) and the like-sign top pair production at the LHC. We also pay special attention to the most recently measured A(FB)(t) in the large top pair invariant mass region. We find that under the current experimental constraints both models can alleviate the deviation of A(FB)(t) and, meanwhile, enhance the like-sign top pair production to the detectable level of the LHC. We also find that the two models give different predictions for the observables and their correlations, and thus they may even be distinguished by jointly studying these top quark observables. |
| 学科主题 | Physics |
| 资助信息 | HASTIT [2009HASTIT004]; National Natural Science Foundation of China (NNSFC) [10821504, 10725526, 10775039, 11075045]; Chinese Academy of Sciences [KJCX2.YW.W10] |
| 收录类别 | SCI |
| 原文出处 | http://dx.doi.org/10.1103/PhysRevD.84.074001 |
| 语种 | 英语 |
| WOS记录号 | WOS:000295541100004 |
| 公开日期 | 2013-05-17 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/14259]  |
| 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. Top quark forward-backward asymmetry, flavor-changing neutral-current decays, and like-sign pair production as a joint probe of new physics[J]. PHYSICAL REVIEW D,2011,84(7):74001. |
| APA | Yang, JM.(2011).Top quark forward-backward asymmetry, flavor-changing neutral-current decays, and like-sign pair production as a joint probe of new physics.PHYSICAL REVIEW D,84(7),74001. |
| MLA | Yang, JM."Top quark forward-backward asymmetry, flavor-changing neutral-current decays, and like-sign pair production as a joint probe of new physics".PHYSICAL REVIEW D 84.7(2011):74001. |
入库方式： OAI收割
来源：理论物理研究所
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