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The results of a search for an excited bottom-quark b* in pp collisions at root s = 7 TeV, using 4.7 fb(-1) of data collected by the ATLAS detector at the LHC are presented. In the model studied, a single b*-quark is produced through a chromomagnetic interaction and subsequently decays to a W boson and a top quark. The search is performed in the dilepton and lepton + jets final states, which are combined to set limits on b*-quark couplings for a range of b*-quark masses. For a benchmark with unit size chromomagnetic and Standard Model-like electroweak b* couplings, b* quarks with masses less than 870 GeV are excluded at the 95% credibility level. (C) 2013 CERN. Published by Elsevier B.V. All rights reserved.

Aad, G., Abajyan, T., Abbott, B., Abdallah, J., Khalek, S.a., Abdelalim, A.a., et al. (2013). Search for single b*-quark production with the ATLAS detector at root s=7 TeV. PHYSICS LETTERS. SECTION B, 721(4-5), 171-189 [10.1016/j.physletb.2013.03.016].

Search for single b*-quark production with the ATLAS detector at root s=7 TeV

CERADINI, Filippo;DI MICCO, Biagio;Di Nardo R;ORESTANO, DOMIZIA;PETRUCCI, FABRIZIO;SALAMANNA, GIUSEPPE;
2013-01-01

Abstract

The results of a search for an excited bottom-quark b* in pp collisions at root s = 7 TeV, using 4.7 fb(-1) of data collected by the ATLAS detector at the LHC are presented. In the model studied, a single b*-quark is produced through a chromomagnetic interaction and subsequently decays to a W boson and a top quark. The search is performed in the dilepton and lepton + jets final states, which are combined to set limits on b*-quark couplings for a range of b*-quark masses. For a benchmark with unit size chromomagnetic and Standard Model-like electroweak b* couplings, b* quarks with masses less than 870 GeV are excluded at the 95% credibility level. (C) 2013 CERN. Published by Elsevier B.V. All rights reserved.
2013
Aad, G., Abajyan, T., Abbott, B., Abdallah, J., Khalek, S.a., Abdelalim, A.a., et al. (2013). Search for single b*-quark production with the ATLAS detector at root s=7 TeV. PHYSICS LETTERS. SECTION B, 721(4-5), 171-189 [10.1016/j.physletb.2013.03.016].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11590/120834
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