Direct and Indirect Detection of Dark Matter in D6 Flavor Symmetric Model

TL;DR

This paper proposes a non-supersymmetric fermionic dark matter model with D6 flavor symmetry, explaining PAMELA positron excess and satisfying direct detection bounds, with a mass range of 230-750 GeV.

Contribution

It introduces a novel D6 flavor symmetric model that accounts for both direct and indirect dark matter detection results, including PAMELA and XENON100 data.

Findings

Dark matter mass range 230-750 GeV consistent with constraints.

Explains PAMELA positron excess via Breit-Wigner enhancement.

Compatible with no antiproton excess observed by PAMELA.

Abstract

We study a fermionic dark matter in a non-supersymmetric extension of the standard model with a family symmetry based on D6xZ2xZ2. In our model, the final state of the dark matter annihilation is determined to be e+ e- by the flavor symmetry, which is consistent with the PAMELA result. At first, we show that our dark matter mass should be within the range of 230 GeV - 750 GeV in the WMAP analysis combined with mu to e gamma constraint. Moreover we simultaneously explain the experiments of direct and indirect detection, by simply adding a gauge and D6 singlet real scalar field. In the direct detection experiments, we show that the lighter dark matter mass ~ 230 GeV and the lighter standard model Higgs boson ~ 115 GeV is in favor of the observed bounds reported by CDMS II and XENON100. In the indirect detection experiments, we explain the positron excess reported by PAMELA through the Breit-Wigner enhancement mechanism. We also show that our model is consistent with no antiproton excess suggested by PAMELA.