Flavor violating Higgs signals in the Texturized Two-Higgs Doublet Model (THDM-Tx)  

作　　者：M. A. Arroyo-Urefna J. Lorenzo Diaz-Cruz Enrique Diaz Javier A. Orduz-Ducuara 

机构地区：[1]Facultad de Ciencias Fisico-Matematicas Benemerita Universidad Autonoma de Puebla, C.P. 72570, Puebla, Pue., Mexico.

出　　处：《Chinese Physics C》2016年第12期22-36,共15页中国物理C（英文版）

基　　金：support from CONACYT-SNI(Mexico)

摘　　要：Flavor violating Higgs signals, such as the top FCNC decay t→ch0 and the LFV Higgs decay h0→τμ, have been studied at the LHC. These signals can arise within the general Two-Higgs Doublet Model （THDM）, where each Higgs doublet couples to all fermion types through Yukawa matrices Yf 1 and Y f2 . The Yukawa matrices can be assumed to have the same form or they could have different structures. In this paper we study the case when both Yf1 and Y f2 have completely different forms, but in such a way that they complement to produce a specific hermitian mass matrix. We find that for specific four-zero textures, the flavor violating Higgs couplings depend only on the free parameters tan β, γf and the fermion masses. We use the current bounds on the low energy processes to derive constraints on the heavy Higgs boson mass, tanβand γf Then, we use these constraints to evaluate the LFV Higgs decays, which reach branching ratios that could be tested at the LHC.Flavor violating Higgs signals, such as the top FCNC decay t→ch0 and the LFV Higgs decay h0→τμ, have been studied at the LHC. These signals can arise within the general Two-Higgs Doublet Model （THDM）, where each Higgs doublet couples to all fermion types through Yukawa matrices Yf 1 and Y f2 . The Yukawa matrices can be assumed to have the same form or they could have different structures. In this paper we study the case when both Yf1 and Y f2 have completely different forms, but in such a way that they complement to produce a specific hermitian mass matrix. We find that for specific four-zero textures, the flavor violating Higgs couplings depend only on the free parameters tan β, γf and the fermion masses. We use the current bounds on the low energy processes to derive constraints on the heavy Higgs boson mass, tanβand γf Then, we use these constraints to evaluate the LFV Higgs decays, which reach branching ratios that could be tested at the LHC.

关 键 词：THDM LFV textures 

分 类 号：O572.3[理学—粒子物理与原子核物理] O623.124[理学—物理]