Brief description of the flavor-changing neutral scalar interactions at two-loop level

30th Annual Meeting of the Division of Particles and Fields (DPyC) of the Mexican Physical Society

Gaitán, R.^1 ; Orduz-Ducuara, J.A.^1

Departamento de Fisica, FES-Cuautitlán Izcalli, UNAM, Estado de México

C.P. 54740, Mexico^1

关键词: Flavor changing neutral currents;    Gammagamma;    General description;    Higgs doublet models;    High-order;    Loop level;    The standard model;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/761/1/012011/pdf
DOI  :  10.1088/1742-6596/761/1/012011

来源: IOP

【 摘 要 】

In this letter we show a general description about flavor-changing neutral currents (FCNC) mediated by scalars. The analysis is extended at two-loop level for the Two-Higgs Doublet Model type-III because others models have strong constraints on its parameters, even at high orders of the perturbation. For this letter we focus on the standard model, calculating the amplitude for the h→γγ process and discussing the results briefly.