https://doi.org/10.1140/epjc/s10052-014-2788-4
Regular Article - Theoretical Physics
Rare top decay and CP violation in THDM
1
Departamento de Física, FES-Cuautitlán, Universidad Nacional Autonóma de México, C.P. 54770 , Cuautitlan Izcalli, Estado de México, Mexico
2
Departamento de Física, Universidad Nacional de Colombia, Bogotá D.C., Colombia
3
Departamento de Química, FES-Cuautitlán, Universidad Nacional Autonóma de México, C.P. 54770 , Cuautitlan Izcalli, Estado de México, Mexico
* e-mail: rgaitan@servidor.unam.mx
** e-mail: rgaitan@unam.mx
Received:
6
December
2013
Accepted:
18
February
2014
Published online:
4
March
2014
We discuss the formalism of the two Higgs doublet model of type III with CP violation from CP-even CP-odd mixing in the neutral Higgs bosons. The flavor-changing interactions among neutral Higgs bosons and fermions are presented at tree level in this type of model. These assumptions allow the study of rare top decays mediated by a neutral Higgs boson; particularly we are interested in 
. For this process we estimate the upper bounds of the branching ratios 
of the order of 
for a neutral Higgs boson mass equal to 125 GeV and 
, 1.5, 2, 2.5. For the case of 
the number of possible events is estimated to range from 1 to 10 events, which could be observed in future experiments at LHC with a luminosity of 300 
and 14 TeV for the energy of the center of mass. Also we estimate that the number of events for the process in different scenarios is of the order of 2,500.
© SIF and Springer-Verlag Berlin Heidelberg, 2014
