Supersymmetric particle mass measurement with invariant mass correlations

TL;DR

This paper enhances supersymmetric particle mass measurements at hadron colliders by utilizing invariant mass correlations, improving precision and resolving ambiguities in decay interpretations.

Contribution

It introduces a novel approach that exploits invariant mass correlations to improve mass measurement accuracy and resolve decay ambiguity in supersymmetry studies.

Findings

Improved mass measurement precision by 20-30% using correlation techniques.

Resolved decay interpretation ambiguities with invariant mass correlations.

Enhanced discrimination between decay types in supersymmetric models.

Abstract

The kinematic end-point technique for measuring the masses of supersymmetric particles in R-Parity conserving models at hadron colliders is re-examined with a focus on exploiting additional constraints arising from correlations in invariant mass observables. The use of such correlations is shown to potentially resolve the ambiguity in the interpretation of quark+lepton end-points and enable discrimination between sequential two-body and three-body lepton-producing decays. The use of these techniques is shown to improve the SUSY particle mass measurement precision for the SPS1a benchmark model by at least 20-30% compared to the conventional end-point technique.