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Scientific article
English

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

ContributorsATLAS Collaboration
Published inPhysics letters. B, vol. 721, no. 4-5, p. 171-189
Publication date2013
Abstract

The results of a search for an excited bottom-quark b⁎b⁎ in pp collisions at √s=7 TeV, using 4.7 fb−14.7 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 GeV870 GeV are excluded at the 95% credibility level.

Keywords
  • ATLAS
  • B*
  • Single top-quark
  • Excited quark
Citation (ISO format)
ATLAS Collaboration. Search for single b*-quark production with the ATLAS detector at √s = 7 TeV. In: Physics letters. B, 2013, vol. 721, n° 4-5, p. 171–189. doi: 10.1016/j.physletb.2013.03.016
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ISSN of the journal0370-2693
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