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Search B' to bZ
A search is presented for the pair production of a charge $-1/3$ vector-like quark, B$'$, that has a 100\% branching fraction into a bottom quark and a Z~boson. Data corresponding to integrated luminosity of 4.9~fb$^{-1}$ from pp~collisions at $\sqrt{s} = 7$~TeV collected with the CMS detector...
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2012
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Acceso en línea: | http://cds.cern.ch/record/1460386 |
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author | CMS Collaboration |
author_facet | CMS Collaboration |
author_sort | CMS Collaboration |
collection | CERN |
description | A search is presented for the pair production of a charge $-1/3$ vector-like quark, B$'$, that has a 100\% branching fraction into a bottom quark and a Z~boson.
Data corresponding to integrated luminosity of 4.9~fb$^{-1}$ from pp~collisions at $\sqrt{s} = 7$~TeV collected with the CMS detector at the LHC were used. The invariant mass spectrum of b-tagged jets and Z~boson candidates, with the latter identified through e$^{+}$e$^{-}$ or $\mu^{+}\mu^{-}$ decays,
is examined for an excess of events and found to be consistent with the standard model expectations. The expected 95\% confidence level lower limit on the mass of the B$'$~quark is 510~GeV$/c^{2}$, while the observed lower limit is 550~GeV$/c^{2}$. |
id | cern-1460386 |
institution | Organización Europea para la Investigación Nuclear |
publishDate | 2012 |
record_format | invenio |
spelling | cern-14603862019-09-30T06:29:59Zhttp://cds.cern.ch/record/1460386CMS CollaborationSearch B' to bZParticle Physics - ExperimentA search is presented for the pair production of a charge $-1/3$ vector-like quark, B$'$, that has a 100\% branching fraction into a bottom quark and a Z~boson. Data corresponding to integrated luminosity of 4.9~fb$^{-1}$ from pp~collisions at $\sqrt{s} = 7$~TeV collected with the CMS detector at the LHC were used. The invariant mass spectrum of b-tagged jets and Z~boson candidates, with the latter identified through e$^{+}$e$^{-}$ or $\mu^{+}\mu^{-}$ decays, is examined for an excess of events and found to be consistent with the standard model expectations. The expected 95\% confidence level lower limit on the mass of the B$'$~quark is 510~GeV$/c^{2}$, while the observed lower limit is 550~GeV$/c^{2}$.CMS-PAS-EXO-11-066oai:cds.cern.ch:14603862012 |
spellingShingle | Particle Physics - Experiment CMS Collaboration Search B' to bZ |
title | Search B' to bZ |
title_full | Search B' to bZ |
title_fullStr | Search B' to bZ |
title_full_unstemmed | Search B' to bZ |
title_short | Search B' to bZ |
title_sort | search b' to bz |
topic | Particle Physics - Experiment |
url | http://cds.cern.ch/record/1460386 |
work_keys_str_mv | AT cmscollaboration searchbtobz |