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Search for the production of an excited bottom quark decaying to $tW$ in proton-proton collisions at $ \sqrt{s}=8 $ TeV

2016-01-27Journal article Open access
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dc.contributor.authorCMS collaboration (2318 authors)
dc.contributor.authorHollar, Jonathan
dc.contributor.authorCalpas, Betty
dc.contributor.authorNayak, Aruna
dc.contributor.authorBargassa, Pedrame
dc.contributor.authorBeirão Da Cruz E Silva, Cristóvão
dc.contributor.authorDi Francesco, Agostino
dc.contributor.authorFaccioli, Pietro
dc.contributor.authorFerreira Parracho, Pedro Guilherme
dc.contributor.authorGallinaro, Michele
dc.contributor.authorLeonardo, Nuno
dc.contributor.authorLloret Iglesias, Lara
dc.contributor.authorNguyen, Federico
dc.contributor.authorRodrigues Antunes, Joao
dc.contributor.authorSeixas, Joao
dc.contributor.authorToldaiev, Oleksii
dc.contributor.authorVadruccio, Daniele
dc.contributor.authorVarela, Joao
dc.contributor.authorVischia, Pietro
dc.contributor.authorDavid Tinoco Mendes, Andre
dc.contributor.authorSilva, Pedro
dc.contributor.authorMusella, Pasquale
dc.contributor.authorPela, Joao
dc.date.accessioned2019-02-04T08:15:58Z
dc.date.available2019-02-04T08:15:58Z
dc.date.issued2016-01-27
dc.date.updated2019-02-04T08:15:58Z
dc.description.abstractA search is presented for a singly produced excited bottom quark (b$^{*}$) decaying to a top quark and a W boson in the all-hadronic, lepton+jets, and dilepton final states in proton-proton collisions at $ \sqrt{s}=8 $ TeV recorded by the CMS experiment at the CERN LHC. Data corresponding to an integrated luminosity of 19.7 fb$^{−1}$ are used. No significant excess of events is observed with respect to standard model expectations. We set limits at 95% confidence on the product of the b$^{*}$ quark production cross section and its branching fraction to tW. The cross section limits are interpreted for scenarios including left-handed, right-handed, and vector-like couplings of the b$^{*}$ quark and are presented in the two-dimensional coupling plane based on the production and decay coupling constants. The masses of the left-handed, right-handed, and vector-like b$^{*}$ quark states are excluded at 95% confidence below 1390, 1430, and 1530 GeV, respectively, for benchmark couplings. This analysis gives the most stringent limits on the mass of the b$^{∗}$ quark to date.
dc.description.versionPeer Reviewed
dc.identifierJHEP 1601 (2016) 166 JHEP 01 (2016) 166; DOI 10.1007/JHEP01(2016)166
dc.identifier.urihttp://dx.doi.org/10.1007/JHEP01(2016)166
dc.identifier.urihttp://hdl.handle.net/10400.26/26943
dc.language.isoeng
dc.titleSearch for the production of an excited bottom quark decaying to $tW$ in proton-proton collisions at $ \sqrt{s}=8 $ TeV
dc.typejournal article
dspace.entity.typePublication
rcaap.rightsopenAccesspt
rcaap.typearticle

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