Search for single b ⁎ -quark production with the ATLAS detector at √s=7 TeV
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...
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2013
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03702693_v721_n4-5_p171_Aad http://hdl.handle.net/20.500.12110/paper_03702693_v721_n4-5_p171_Aad |
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| Sumario: | 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. © 2013 CERN |
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