摘要
In this paper, we calculate the top quark rare decays t →cγ and v in an extension of the standard model, where baryon number and lepton number are local gauge symmetries. Adopting reasonable assumptions on the parameter space, we find that the branching ratios of t →cγ and t →cg can reach 10^-6 and 10^-5 respectively, which can be detected in near future.
基金
Supported by the National Natural Science Foundation of China under Grant Nos.10975027,11275036,11047002
Natural Science Fund of Hebei University under Grant Nos.2011JQ05 and 2012-242
