Top quark flavor-changing neutral-current decays and productions at LHC in the littlest Higgs model with T parity

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	Top quark flavor-changing neutral-current decays and productions at LHC in the littlest Higgs model with T parity
	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
刊名	PHYSICAL REVIEW D
	2009
卷号	80 期号:1 页码:-
关键词	Minimal Supersymmetric Model Hadron Colliders Linear Colliders Standard Model Rare Decays 3rd-family Quarks Fcnc Processes Physics Susy Operators
ISSN号	1550-7998
英文摘要	In 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.
学科主题	Physics
URL标识	查看原文
WOS记录号	WOS:000268618600066
公开日期	2012-08-02
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/5284]
专题	理论物理研究所_理论物理所1978-2010年知识产出
通讯作者	Han, XF , Acad Sinica, Inst Theoret Phys, Key Lab Frontiers Theoret Phys, Beijing 100190, Peoples R China
推荐引用方式 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):-.