A Simple Model of Gauged Lepton and Baryon Charges | Science Publications

Physics International

H.N. Long¹  P.V. Dong¹ 

关键词: 12.60.Cn;    11.30.Fs;    14.65.Jk;   

DOI  :  10.3844/pisp.2015.23.32

学科分类：物理（综合）

来源: Science Publications

【 摘 要 】

Abstract: We propose a simple extensionof the standard model with lepton and baryon numbers gauged by introducing onlytwo leptoquarks (j^+1/2, k^-1/2) to the fermion content. Asnatural consequences of the anomaly cancelation, the right-handed neutrinospresent and the number of observed fermion families equals to the number offundamental colors, which is three. To avoid stabilized colored-leptoquarks,two scalar doublets f, χ are introduced which couplethe leptoquarks to ordinary quarks. The new gauge bosons,  gain masses via thevacuum values of scalars S_L, S_B which are only chargedunder the U(1)_L, U(1)_B symmetries, respectively.Furthermore, due to the spontaneous symmetry breaking of these charges, theneutrinos obtain small masses via type I seesaw mechanism while thebaryogenesis can be generated in several cases. Constraints coming from flavorchanging, stabilization of anomalously electric-charged scalars and collisionphenomenology are also obtained.

【 授权许可】

Unknown