期刊论文

Li, Xin-Qiang

英文

Journal of High Energy Physics

1029-8479

2015

2015

6

1-26

10.1007/JHEP06(2015)005

Spanish GovernmentSpanish GovernmentEuropean Commission; European Commission (Consolider Project CPAN) [FPA2011-23778, CSD2007-00042]; Generalitat ValencianaGeneralitat ValencianaEuropean Commission [PrometeoII/2013/007]; Alexander von Humboldt FoundationAlexander von Humboldt Foundation; National Natural Science Foundation of China (NSFC)National Natural Science Foundation of China (NSFC) [11005032, 11435003]; Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education MinistryScientific Research Foundation for the Returned Overseas Chinese Scholars; Open Project Program of State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, China [Y4KF081CJ1]; CCNU from the colleges' basic research and operation of MOEMinistry of Education, Singapore [CCNU15A02037]

本校为通讯机构

We perform a complete one-loop computation of the two-body flavour-changing top decays $t \rightarrow c h$ and $t \rightarrow c V$ ($V= \gamma, Z$), within the aligned two-Higgs-doublet model. We evaluate the impact of the model parameters on the associated branching ratios, taking into account constraints from flavour data and measurements of the Higgs properties. Assuming that the $125$~GeV Higgs corresponds to the lightest CP-even scalar of the CP-conserving aligned two-Higgs-doublet model, we find that the rates for such flavour-changing top decays lie below the expected sensitivity of the...