Search for Supersymmetry in hadronic final states using MT2 with the CMS detector at 7 TeV

CMS Physics Analysis Summaries
Report number	CMS-PAS-SUS-12-002
Title	Search for Supersymmetry in hadronic final states using MT2 with the CMS detector at 7 TeV
Corporate author(s)	CMS Collaboration
Collaboration	CMS Collaboration
Subject category	Particle Physics - Experiment
Accelerator/Facility, Experiment	CERN LHC ; CMS
Abstract	A search for Supersymmetry or similar new physics was carried out using a $\sqrt{s} = 7$ TeV $pp$ collisions data sample corresponding to \Lumino of integrated luminosity collected by the CMS experiment at the LHC. Fully hadronic final states were selected based on the stransverse mass variable $M_{T2}$. Two complementary analyses were performed. The first targets the region of parameter space with medium to high squark and gluino masses, in which the signal can be separated from the Standard Model backgrounds by a strong cut on $M_{T2}$. A second analysis has been optimized to look for events with a light gluino but heavy squarks. In this case, the $M_{T2}$ cut was relaxed, but a higher jet multiplicity and at least one $b$-tagged jet were required. The dominant backgrounds in both analyses are different and they were estimated using data-driven methods. As no excess of events over the expected background was observed, exclusion limits were derived on the parameter space of the constrained minimal supersymmetric extension of the Standard Model (mSUGRA/CMSSM), as well as on a variety of Simplified Model Spectra.
Other source	Inspire
Related	superseded by: CERN-PH-EP-2012-186
Email contact: cms-pag-conveners-susy@cern.ch Fulltext in PDF Figure_001 Figure_002 Figure_003 Figure_004-a Figure_004-b Figure_005 Figure_006-a Figure_006-b Figure_007 Figure_008-a Figure_008-b Figure_009-a Figure_009-b Figure_010-a Figure_010-b Figure_010-c Figure_010-d Additional information for the analysis (restricted access)