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Top quark forward-backward asymmetry, flavor-changing neutral-current decays, and like-sign pair production as a joint probe of new physics
Cao, JJ; Wang, L; Wu, L; Yang, JM; Cao, JJ (reprint author), Henan Normal Univ, Coll Phys & Informat Engn, Xinxiang 453007, Peoples R China.
2011
发表期刊PHYSICAL REVIEW D
ISSN1550-7998
卷号84期号:7页码:74001
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.
部门归属[Cao, Junjie; Wang, Lin] Henan Normal Univ, Coll Phys & Informat Engn, Xinxiang 453007, Peoples R China; [Wang, Lin; Wu, Lei; Yang, Jin Min] Acad Sinica, Inst Theoret Phys, Key Lab Frontiers Theoret Phys, Beijing 100190, Peoples R China
关键词Minimal Supersymmetric Model Standard Model Rare Decays 3rd-family Quarks Fcnc Couplings One-loop Lhc Colliders Susy Operators
学科领域Physics
资助者HASTIT [2009HASTIT004]; National Natural Science Foundation of China (NNSFC) [10821504, 10725526, 10775039, 11075045]; Chinese Academy of Sciences [KJCX2.YW.W10] ; HASTIT [2009HASTIT004]; National Natural Science Foundation of China (NNSFC) [10821504, 10725526, 10775039, 11075045]; Chinese Academy of Sciences [KJCX2.YW.W10] ; HASTIT [2009HASTIT004]; National Natural Science Foundation of China (NNSFC) [10821504, 10725526, 10775039, 11075045]; Chinese Academy of Sciences [KJCX2.YW.W10] ; HASTIT [2009HASTIT004]; National Natural Science Foundation of China (NNSFC) [10821504, 10725526, 10775039, 11075045]; Chinese Academy of Sciences [KJCX2.YW.W10] ; HASTIT [2009HASTIT004]; National Natural Science Foundation of China (NNSFC) [10821504, 10725526, 10775039, 11075045]; Chinese Academy of Sciences [KJCX2.YW.W10] ; HASTIT [2009HASTIT004]; National Natural Science Foundation of China (NNSFC) [10821504, 10725526, 10775039, 11075045]; Chinese Academy of Sciences [KJCX2.YW.W10] ; HASTIT [2009HASTIT004]; National Natural Science Foundation of China (NNSFC) [10821504, 10725526, 10775039, 11075045]; Chinese Academy of Sciences [KJCX2.YW.W10] ; HASTIT [2009HASTIT004]; National Natural Science Foundation of China (NNSFC) [10821504, 10725526, 10775039, 11075045]; Chinese Academy of Sciences [KJCX2.YW.W10]
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收录类别SCI
语种英语
资助者HASTIT [2009HASTIT004]; National Natural Science Foundation of China (NNSFC) [10821504, 10725526, 10775039, 11075045]; Chinese Academy of Sciences [KJCX2.YW.W10] ; HASTIT [2009HASTIT004]; National Natural Science Foundation of China (NNSFC) [10821504, 10725526, 10775039, 11075045]; Chinese Academy of Sciences [KJCX2.YW.W10] ; HASTIT [2009HASTIT004]; National Natural Science Foundation of China (NNSFC) [10821504, 10725526, 10775039, 11075045]; Chinese Academy of Sciences [KJCX2.YW.W10] ; HASTIT [2009HASTIT004]; National Natural Science Foundation of China (NNSFC) [10821504, 10725526, 10775039, 11075045]; Chinese Academy of Sciences [KJCX2.YW.W10] ; HASTIT [2009HASTIT004]; National Natural Science Foundation of China (NNSFC) [10821504, 10725526, 10775039, 11075045]; Chinese Academy of Sciences [KJCX2.YW.W10] ; HASTIT [2009HASTIT004]; National Natural Science Foundation of China (NNSFC) [10821504, 10725526, 10775039, 11075045]; Chinese Academy of Sciences [KJCX2.YW.W10] ; HASTIT [2009HASTIT004]; National Natural Science Foundation of China (NNSFC) [10821504, 10725526, 10775039, 11075045]; Chinese Academy of Sciences [KJCX2.YW.W10] ; HASTIT [2009HASTIT004]; National Natural Science Foundation of China (NNSFC) [10821504, 10725526, 10775039, 11075045]; Chinese Academy of Sciences [KJCX2.YW.W10]
WOS记录号WOS:000295541100004
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被引频次:81[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/14259
专题理论物理所SCI论文
通讯作者Cao, JJ (reprint author), Henan Normal Univ, Coll Phys & Informat Engn, Xinxiang 453007, Peoples R China.
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Cao, JJ,Wang, L,Wu, L,et al. 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 Cao, JJ,Wang, L,Wu, L,Yang, JM,&Cao, JJ .(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 Cao, JJ,et al."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.
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