The Generic $U(1{)}_X$ Models Inspired from $SO(10)$

Abstract

We propose the family universal $U(1{)}_X$ models with three right-handed neutrinos by choosing the $U(1{)}_X$ gauge symmetry as a linear combination of $U(1{)}_Y\times U(1{)}_{\chi }$ of $SO(10)$. To be consistent with the quantum gravity effects, we introduced a Dirac fermion $\chi$ as a dark matter candidate, which is odd under the gauged $Z_2$ symmetry after $U(1{)}_X$ breaking. The isospin violation dark matter with $f_n/f_p=-0.7$ can be realized naturally, and thus the LUX, PANDAX, and XENON1T experimental constraints can be evaded. Moreover, we study the masses and mixings for Higgs and gauge bosons, consider the LHC constraints on the $Z^{\prime }$ mass, simulate various constraints from dark matter direct and indirect detection experiments, and then present the viable parameter spaces. To study the LHC $Z^{\prime }$ mass bounds on the generic $U(1{)}_X$ models, we considered four kinds of scenarios, where scenario II with zero $U(1{)}_X$ charge for right-handed up-type quarks can relax the LHC $Z^{\prime }$ mass bound a little bit.

arXiv comment18 pages, 6 figures

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