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  • PhysRevLett.109.211802

    Rights statement: 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

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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

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Article number211802
<mark>Journal publication date</mark>20/11/2012
<mark>Journal</mark>Physical review letters
Issue number21
Volume109
Number of pages18
Publication StatusPublished
<mark>Original language</mark>English

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.

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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