CoGeNT, DAMA, and Neutralino Dark Matter in the Next-To-Minimal Supersymmetric Standard Model

TL;DR

This paper investigates whether the Next-To-Minimal Supersymmetric Standard Model (NMSSM) can accommodate light dark matter particles consistent with experimental signals from CoGeNT and DAMA, considering relic density and detection cross sections.

Contribution

It evaluates the NMSSM's ability to produce light dark matter with the correct relic density and large detection cross sections, highlighting limitations under standard assumptions.

Findings

NMSSM can produce light dark matter candidates in the 2-12 GeV range.

Achieving the required detection cross section is challenging within standard assumptions.

The model falls short by a factor of 10-15 without violating muon g-2 constraints.

Abstract

We assess the extent to which the NMSSM can allow for light dark matter in the $2\gev\lsim \mcnone\lsim 12\gev$ mass range with correct relic density and large spin-independent direct-detection cross section, $\sigsi$, in the range suggested by \cogent\ and DAMA. For standard assumptions regarding nucleon $s$-quark content and cosmological relic density, $\rho$, we find that the NMSSM falls short by a factor of about 10 to 15 (3 to 5) without (with) significant violation of the current $(g-2)_\mu$ constraints.