Search for single $b^*$-quark production with the ATLAS detector at $\\sqrts=7$ TeV
Journal
Physics Letters
Journal Volume
B721
Pages
171-189
Date Issued
2013
Author(s)
Aad, Georges
Abstract
Single top-quark Excited quark The results of a search for an excited bottom-quark b * in pp collisions at 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.
Type
journal article