Abstract: We propose a simple extensionof the standard model with lepton and baryon numbers gauged by introducing onlytwo leptoquarks'/>
A Simple Model of Gauged Lepton and Baryon Charges | Science Publications
> class="block-title sub-title" style="text-align:justify">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 src="file:///C:UsersUserAppDataLocalTempmsohtmlclip11clip_image002.gif" height="20" width="17">, src="file:///C:UsersUserAppDataLocalTempmsohtmlclip11clip_image004.gif" height="20" width="17"> gain masses via thevacuum values of scalars SL, SB 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.
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