Implication on Higgs invisible width in light of the new CDMS result

TL;DR

This paper derives upper limits on the Higgs boson's invisible decay width based on recent CDMSII dark matter detection results, assuming Higgs-mediated interactions dominate dark matter scattering.

Contribution

It provides the first direct constraints on the Higgs invisible width from dark matter direct detection data within a supersymmetric framework.

Findings

Higgs invisible width is constrained to be less than 20-120 MeV for Higgs masses 120-180 GeV.

The results impact strategies for Higgs boson searches at colliders.

Assumes Higgs exchange dominates dark matter-nucleon interactions.

Abstract

With the assumption that the dominant diagram in supersymmetry for the spin-independent cross section of the dark matter particle is due to Higgs boson exchange, we obtain an upper limit on the Higgs-dark-matter coupling based on the new result of the CDMSII Collaborations. We then obtain an upper limit on the invisible width of the Higgs boson, numerically it is less than 20-120 MeV for $m_h \simeq 120 - 180$ GeV. Implications for Higgs boson search are also discussed.