Search for a Supersymmetric Partner to the Top Quark in Final States with Jets and Missing Transverse Momentum at s√=7 TeV with the ATLAS Detector

Barton, Adam and Borissov, Guennadi and Bouhova-Thacker, Eva and Chilingarov, Alexandre and Davidson, Ruth and de Mora, Lee and Dearnaley, William and Fox, Harald and Henderson, Robert and Hughes, Gareth and Jones, Roger William Lewis and Kartvelishvili, Vakhtang and Long, Robin and Love, Peter and Maddocks, Harvey and Smizanska, Maria and Walder, James (2012) Search for a Supersymmetric Partner to the Top Quark in Final States with Jets and Missing Transverse Momentum at s√=7  TeV with the ATLAS Detector. Physical review letters, 109 (21). ISSN 1079-7114

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Abstract

A search for direct pair production of supersymmetric top squarks (t˜1) is presented, assuming the t˜1 decays into a top quark and the lightest supersymmetric particle, χ˜01, and that both top quarks decay to purely hadronic final states. A total of 16 (4) events are observed compared to a predicted standard model background of 13.5+3.7−3.6(4.4+1.7−1.3) events in two signal regions based on ∫Ldt=4.7  fb−1 of pp collision data taken at s√=7  TeV with the ATLAS detector at the LHC. An exclusion region in the t˜1 versus χ˜01 mass plane is evaluated: 370<mt˜1<465  GeV is excluded for mχ˜01∼0  GeV while mt˜1=445  GeV is excluded for mχ˜01≤50  GeV.

Item Type:
Journal Article
Journal or Publication Title:
Physical review letters
Additional Information:
Published by the American Physical Society under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. © 2012 CERN, for the ATLAS Collaboration
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3100
Subjects:
ID Code:
68015
Deposited By:
Deposited On:
13 Dec 2013 00:03
Refereed?:
Yes
Published?:
Published
Last Modified:
02 Jul 2020 01:21