A singular way to search for heavy resonances in missing energy events

TL;DR

This paper introduces a new singularity variable for missing energy events that enhances the detection of heavy resonances and allows direct mass measurement, demonstrated in Higgs boson searches.

Contribution

A novel singularity variable tailored for antler decay topologies that directly relates to resonance mass, improving search sensitivity at hadron colliders.

Findings

The new variable's distribution endpoints are directly linked to resonance mass.

Application to heavy Higgs boson searches shows improved detection prospects.

The method enhances both discovery potential and mass spectrum extraction.

Abstract

The phase space of visible particles in missing energy events may have singularity structures. The singularity variables are devised to capture the singularities effectively for given event topology. They can greatly improve the discovery potential of new physics signals as well as to extract the mass spectrum information at hadron colliders. Focusing on the antler decay topology of resonance, we derive a novel singularity variable whose distribution has endpoints directly correlated with the resonance mass. As a practical application, we examine the applicability of the singularity variable to the searches for heavy neutral Higgs bosons in the two-Higgs doublet model.