SUSY Digs up a Buried Higgs

TL;DR

This paper investigates the detection of a 'Buried Higgs' decaying into four jets via a pseudo-scalar, using jet substructure techniques in supersymmetric scenarios at the LHC, achieving potential discovery with current data.

Contribution

It introduces a novel approach to detect a Higgs decaying into four jets through a pseudo-scalar, employing jet substructure methods in supersymmetric cascade decays.

Findings

Potential 5-sigma discovery with 10-25 fb^-1 at 14 TeV for Higgs masses 100-120 GeV.

High p_T jets and missing energy effectively suppress QCD backgrounds.

Detection of lighter Higgs bosons remains challenging due to W boson contamination.

Abstract

The Higgs boson may dominantly decay to 4 light jets through a light pseudo-scalar intermediary: h -> 2 eta -> 4j, making reconstruction at the LHC particularly challenging. We explore the phenomenology of such "Buried Higgs" scenarios in which the primary discovery channel of the Higgs is in cascade decays of superpartners. QCD backgrounds that would otherwise overwhelm the Higgs decay are suppressed by the requirement of high p_T jets and large missing transverse momentum that are the typical signatures of TeV scale supersymmetry. Utilizing jet substructure techniques, we find that for buried Higgses in the 100-120 GeV range, a 5-sigma discovery can be expected with roughly 10-25 inverse fb of data at E_CM = 14 TeV. For lighter Higgs bosons, the signal is contaminated by hadronically decaying W bosons, and discovery remains an unsolved challenge.