Supersymmetric U(1)B x U(1)L model with leptophilic and leptophobic cold dark matters

TL;DR

This paper introduces a supersymmetric model with extra gauge symmetries that naturally accommodates multiple cold dark matter candidates, explaining experimental data and predicting new particles detectable at the LHC.

Contribution

It proposes a novel supersymmetric U(1)B x U(1)L model with three types of cold dark matter candidates and explores their phenomenological implications.

Findings

Leptophobic dark matter can have the correct relic density with specific gauge boson mass.

Leptophilic dark matter around 1 TeV can fit PAMELA and Fermi/LAT data.

Potential signatures of new fermions and gauge bosons at the LHC.

Abstract

We consider a supersymmetric model with extra $U(1)_B \times U(1)_L$ gauge symmetry that are broken spontaneously. Salient features of this model are that there are three different types of cold dark matter (CDM) candidates, and neutral scalar sector has a rich structure. Light CDM with $\sigma_{\rm SI} \sim 10^{-3\pm 1}$ pb can be easily accommodated by leptophobic dark matter ($\chi_B$) with correct relic density, if the $U(1)_B$ gauge boson mass is around $2 m_{\chi_B}$. Also the PAMELA and Fermi/LAT data can be fit by leptophilic CDM with mass $\sim 1$ TeV. There could be interesting signatures of new fermions and new gauge bosons at the LHC.