Collider signals of top quark flavor violation from a warped extra dimension

被引:138
作者
Agashe, Kaustubh [1 ]
Perez, Gilad
Soni, Amarjit
机构
[1] Syracuse Univ, Dept Phys, Syracuse, NY 13244 USA
[2] Lawrence Berkeley Lab, Theoret Phys Grp, Berkeley, CA 94720 USA
[3] SUNY Stony Brook, CN Yang Inst Theoret Phys, Stony Brook, NY 11794 USA
[4] Brookhaven Natl Lab, Upton, NY 11973 USA
来源
PHYSICAL REVIEW D | 2007年 / 75卷 / 01期
关键词
D O I
10.1103/PhysRevD.75.015002
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We study top quark flavor violation in the framework of a warped extra dimension with the Standard Model (SM) fields propagating in the bulk. Such a scenario provides solutions to both the Planck-weak hierarchy problem and the flavor puzzle of the SM without inducing a flavor problem. We find that, generically, tcZ couplings receive a huge enhancement, in particular, the right-handed ones can be O(1%). This results in BR(t -> cZ) at or above the sensitivity of the Large Hadron Collider (LHC). At the International Linear Collider (ILC), single top production, via e(+)e(-)-> t $$(c) over bar, can be a striking signal for this scenario. In particular, it represents a physics topic of critical importance that can be explored even with a relatively low energy option, close to the tc threshold. At both the LHC and the ILC, angular distributions can probe the above prediction of dominance of right-handed couplings.
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页数:5
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