Search for supersymmetry in hadronic final states with MT2

TL;DR

This paper reports a search for supersymmetry in fully hadronic final states at the LHC using the CMS detector, employing the MT2 variable to interpret results across different SUSY models, and finds no evidence of new physics.

Contribution

The study introduces two complementary analyses targeting different SUSY phase space regions using the MT2 variable, with background estimation from simulation and data-driven methods.

Findings

No excess events observed over background expectations

Exclusion limits set on various SUSY models

Enhanced analysis techniques for hadronic final states

Abstract

We present the results of a search for physics beyond the Standard Model (BSM) using data of 1.1 /fb integrated luminosity collected by the CMS experiment at the LHC. Fully hadronic final states were selected based on the "stransverse" mass variable MT2 and interpreted in various models of supersymmetry (SUSY). Two complementary analyses were performed targeting different areas of the SUSY phase space. All backgrounds were estimated using both simulation and data-driven methods. As no excess of events over the expected background was observed exclusion limits were derived.