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

Research output: Contribution to Journal/Magazine › Journal article › peer-review

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  • The ATLAS collaboration
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<mark>Journal publication date</mark>25/04/2013
<mark>Journal</mark>Physics Letters B
Issue number4-5
Volume721
Number of pages19
Pages (from-to)171-189
Publication StatusPublished
<mark>Original language</mark>English

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.

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This article is published Open Access at sciencedirect.com. It is distributed under the terms of the Creative Commons Attribution License 3.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are credited.