Higgs Decays and Brane Gravi-vectors

TL;DR

This paper explores how Higgs boson decays into stable, massive gravi-vectors in brane world models, showing that such invisible decays could be significant within current experimental constraints.

Contribution

It introduces a novel analysis of Higgs decays into gravi-vectors, emphasizing the role of extrinsic curvature couplings and their potential impact on decay rates.

Findings

Higgs decay into two gravi-vectors can be comparable to Standard Model decay modes.

Such decays could manifest as invisible Higgs decay signatures.

Parameter space allows for significant invisible decay rates within current bounds.

Abstract

Higgs boson decays in flexible brane world models with stable, massive gravi-vectors are considered. Such vectors couple bilinearly to the Standard Model fields through either the Standard Model energy-momentum tensor, the weak hypercharge field strength or the Higgs scalar. The role of the coupling involving the extrinsic curvature is highlighted. It is found that within the presently allowed parameter space, the decay rate of the Higgs into two gravi-vectors (which would appear as an invisible Higgs decay) can be comparable to the rate for any of the Standard Model decay modes.