Top quark three-body decays in the R-parity violating MSSM

被引:18
作者
Heng, Zhaoxia [1 ]
Lu, Gongru [2 ]
Wu, Lei [2 ]
Yang, Jin Min [1 ]
机构
[1] Acad Sinica, Inst Theoret Phys, Key Lab Frontiers Theoret Phys, Beijing 100190, Peoples R China
[2] Henan Normal Univ, Coll Phys & Informat Engn, Xinxiang 453007, Peoples R China
来源
PHYSICAL REVIEW D | 2009年 / 79卷 / 09期
关键词
RARE DECAYS; ONE-LOOP; 3RD-FAMILY QUARKS; FCNC PROCESSES; STANDARD; SUPERSYMMETRY; PHYSICS; MODELS; OPERATORS; COLLIDERS;
D O I
10.1103/PhysRevD.79.094029
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
In the minimal supersymmetric standard model the R-parity violating interactions can trigger various exotic three-body decays for the top quark, which may be accessible at the LHC. In this work we examine the R-violating decays t -> cX(1)X(2), which include the tree-level processes t -> cl(i)(-)l(j)(+) (l(i) = e, mu, tau) and t -> cd(i)(d) over bar (j) (d(i) = d, s, b), as well as the loop- induced processes t -> cgX (X = g, gamma, Z, h). We find that the hereto weakly constrained R-violating couplings can render the decay branching ratios quite sizable, some of which already reach the sensitivity of the Tevatron collider and can be explored at the LHC with better sensitivity.
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页数:7
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