Invisible Higgs and Scalar Dark Matter

TL;DR

This paper analyzes the constraints on invisible Higgs decays to scalar dark matter using WMAP, XENON100, and LHC data, finding that such decays are generally negligible except in specific light or around 60 GeV dark matter mass regions.

Contribution

It combines cosmological, direct detection, and collider data to refine limits on Higgs invisible decay to scalar dark matter, highlighting regions with significant decay ratios.

Findings

Invisible Higgs decay width is less than 10% in most cases.

Light dark matter (<10 GeV) and around 60 GeV are exceptions with higher decay ratios.

Strong limits on elastic scattering cross section from LHC Higgs searches.

Abstract

In this proceeding, we show that when we combined WMAP and the most recent results of XENON100, the invisible width of the Higgs to scalar dark matter is negligible(<10%), except in a small region with very light dark matter (< 10 GeV) not yet excluded by XENON100 or around 60 GeV where the ratio can reach 50% to 60%. The new results released by the Higgs searches of ATLAS and CMS set very strong limits on the elastic scattering cross section.