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题名: Testing new physics models by top charge asymmetry and polarization at the LHC
作者: Cao, JJ ;  Hikasa, K ;  Wang, L ;  Wu, L ;  Yang, JM
刊名: PHYSICAL REVIEW D
出版日期: 2012
卷号: 85, 期号:1, 页码:14025
关键词: FORWARD-BACKWARD ASYMMETRY ;  QUARK PAIR PRODUCTION ;  HADRON COLLIDERS ;  T(T)OVER-BAR ASYMMETRY ;  3RD-FAMILY QUARKS ;  FERMILAB TEVATRON ;  OPERATORS ;  SYMMETRY ;  BOSON
学科分类: Physics
通讯作者: Cao, JJ (reprint author), Henan Normal Univ, Dept Phys, Xinxiang 453007, Peoples R China.
部门归属: [Cao, Junjie; Wang, Lin] Henan Normal Univ, Dept Phys, Xinxiang 453007, Peoples R China; [Hikasa, Kenichi] Tohoku Univ, Dept Phys, Sendai, Miyagi 9808578, Japan; [Wu, Lei; Yang, Jin Min] Acad Sinica, Inst Theoret Phys, Beijing 100190, Peoples R China
英文摘要: As a top quark factory, the LHC can test new physics models used to explain the top quark forwardbackward asymmetry A(FB)(t) measured at the Tevatron. In this work we perform a comparative study for two such models: the W' model and the color triplet diquark (phi) model. Requiring these models to explain A(FB)(t) and also satisfy the top pair production rate measured at the Tevatron, we examine their contributions to the LHC observables such as the polarizations and charge asymmetries in top quark productions and the charge asymmetry in W' (or phi) pair production. We find that these observables can be enhanced to their observable levels and current LHC measurement on the top charge asymmetry has already tightly constrained the W' model. We also find that each observable shows different characteristics in different models, which can be utilized to discriminate the models.
资助者: HASTIT [2009HASTIT004]; National Natural Science Foundation of China (NNSFC) [10821504, 10725526, 10775039, 11075045]; Chinese Academy of Sciences [KJCX2.YW.W10]; [14046201]
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000299926800002
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/15175
Appears in Collections:理论物理所2012年知识产出_期刊论文

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Recommended Citation:
Cao, JJ,Hikasa, K,Wang, L,et al. Testing new physics models by top charge asymmetry and polarization at the LHC[J]. PHYSICAL REVIEW D,2012,85(1):14025.
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