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Han, Xiao-Fang; Wang, Lei; Yang, Jin Min; Han, XF , Acad Sinica, Inst Theoret Phys, Key Lab Frontiers Theoret Phys, Beijing 100190, Peoples R China
Top quark flavor-changing neutral-current decays and productions at LHC in the littlest Higgs model with T parity
Source PublicationPHYSICAL REVIEW D
KeywordMinimal Supersymmetric Model Hadron Colliders Linear Colliders Standard Model Rare Decays 3rd-family Quarks Fcnc Processes Physics Susy Operators
AbstractIn the littlest Higgs model with T-parity (LHT) the newly introduced mirror quarks have flavor-changing couplings with the standard model (SM) quarks and may enhance the flavor-changing neutral-current (FCNC) top-quark interactions which are extremely suppressed in the SM. In this work we perform a comprehensive study for the contributions of these mirror fermions to various top-quark FCNC decays and productions at the LHC, which includes the decays t -> cV (V=g, gamma, Z), t -> cgg and the productions proceeding through the parton processes cg -> t, gg -> tc, cg -> tg, cg -> t gamma and cg -> tZ. We find that although these FCNC processes can be greatly enhanced by the LHT contributions, they are hardly accessible at the LHC. Therefore, the LHT model may not cause the FCNC problem in the top-quark sector if the top-quark property is proved to be SM-like at the LHC.
2009
ISSN1550-7998
Volume80Issue:1Pages:-
Subject AreaPhysics
Indexed BySCI
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Cited Times:15[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/5284
Collection理论物理所科研产出_SCI论文
Corresponding AuthorHan, XF , Acad Sinica, Inst Theoret Phys, Key Lab Frontiers Theoret Phys, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Han, Xiao-Fang,Wang, Lei,Yang, Jin Min,et al. Top quark flavor-changing neutral-current decays and productions at LHC in the littlest Higgs model with T parity[J]. PHYSICAL REVIEW D,2009,80(1):-.
APA Han, Xiao-Fang,Wang, Lei,Yang, Jin Min,&Han, XF , Acad Sinica, Inst Theoret Phys, Key Lab Frontiers Theoret Phys, Beijing 100190, Peoples R China.(2009).Top quark flavor-changing neutral-current decays and productions at LHC in the littlest Higgs model with T parity.PHYSICAL REVIEW D,80(1),-.
MLA Han, Xiao-Fang,et al."Top quark flavor-changing neutral-current decays and productions at LHC in the littlest Higgs model with T parity".PHYSICAL REVIEW D 80.1(2009):-.
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