Search for supersymmetry in <i>pp</i> collisions at √<i>s</i>=7 TeV in final states with missing transverse momentum and <i>b</i>-jets


Aad G., Abbott B., Abdallah J., Abdelalim A., Abdesselam A., Abdinov O., ...More

PHYSICS LETTERS B, no.4, pp.398-416, 2011 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Publication Date: 2011
  • Doi Number: 10.1016/j.physletb.2011.06.015
  • Journal Name: PHYSICS LETTERS B
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.398-416
  • Keywords: ATLAS, Gluino, LHC, Sbottom, Stop, Supersymmetry
  • Ankara University Affiliated: Yes

Abstract

Results are presented of a search for supersymmetric particles in events with large missing transverse momentum and at least one heavy flavour jet candidate in root s = 7 TeV proton proton collisions. In a data sample corresponding to an integrated luminosity of 35 pb(-1) recorded by the ATLAS experiment at the Large Hadron Collider, no significant excess is observed with respect to the prediction for Standard Model processes. For R-parity conserving models in which sbottoms (stops) are the only squarks to appear in the gluino decay cascade, gluino masses below 590 GeV (520 GeV) are excluded at the 95% C.L. The results are also interpreted in an MSUGRA/CMSSM supersymmetry breaking scenario with tan beta = 40 and in an SO(10) model framework. (C) 2011 CERN. Published by Elsevier B.V. All rights reserved.