Probing the light Higgs pole resonance annihilation of dark matter in the light of XENON100 and CDMS-II observations

TL;DR

This paper investigates lightest neutralino dark matter in supergravity models, highlighting the role of Higgs resonance in detection prospects and discussing implications for LHC observations.

Contribution

It explores the neutralino dark matter annihilation via Higgs resonance in supergravity models, considering recent direct detection experiment results and LHC signatures.

Findings

Large direct detection reach for light neutralinos in Higgs resonance region

Heavier Higgs significantly influences neutralino-proton cross-section

Potential LHC signatures discussed in the context of the model

Abstract

We consider the prospect of lightest neutralino (${\tilde \chi}_1^0$) as a dark matter candidate in the light of recent interesting observations from the XENON100 and CDMS-II experiments in minimal supergravity framework with large $\tan\beta$ and non-vanishing $A_0$. Within the WMAP satisfied zone, there is a large direct detection reach of lighter ${\tilde \chi}_1^0$ in the lighter Higgs boson mediated resonance annihilation domain of the above scenario. It is seen that the heavier Higgs boson plays a dominating role in the ${\tilde \chi}_1^0-p$ cross-section in the associated zone of parameter space in spite of having a larger mass. Possible LHC signatures are discussed.