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Search for Direct Top Squark Pair Production in Final States with One Isolated Lepton, Jets, and Missing Transverse Momentum in root s=7 TeV pp Collisions Using 4.7 fb(-1) of ATLAS Data
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
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Number of Authors: 2886
2012 (English)In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 109, no 21, 211803- p.Article in journal (Refereed) Published
Abstract [en]

A search is presented for direct top squark pair production in final states with one isolated electron or muon, jets, and missing transverse momentum in proton-proton collisions at root s = 7 TeV. The measurement is based on 4.7 fb(-1) of data collected with the ATLAS detector at the LHC. Each top squark is assumed to decay to a top quark and the lightest supersymmetric particle (LSP). The data are found to be consistent with standard model expectations. Top squark masses between 230 GeV and 440 GeV are excluded with 95% confidence for massless LSPs, and top squark masses around 400 GeV are excluded for LSP masses up to 125 GeV.

Place, publisher, year, edition, pages
2012. Vol. 109, no 21, 211803- p.
Keyword [en]
Supergauge Transformations, Supersymmetry, Model, Particle, Currents, Masses, Quark, Pions, Weak
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-109514DOI: 10.1103/PhysRevLett.109.211803ISI: 000311284200003Scopus ID: 2-s2.0-84870164046OAI: oai:DiVA.org:kth-109514DiVA: diva2:582993
Funder
Swedish Research Council
Note

QC 20130107. Author count: 2886

Available from: 2013-01-07 Created: 2013-01-07 Last updated: 2017-12-06Bibliographically approved

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Strandberg, Jonas

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