Publicação: Search for heavy bottom-like quarks in 4.9 fb-1 of pp collisions at √s = 7 TeV
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Results are presented from a search for heavy bottom-like quarks, pair-produced in pp collisions at √s = 7TeV, undertaken with the CMS experiment at the LHC. The b′ quarks are assumed to decay exclusively to tW. The b′b̄′ → tW-t̄W+ process can be identified by its distinctive signatures of three leptons or two leptons of same charge, and at least one b-quark jet. Using a data sample corresponding to an integrated luminosity of 4.9 fb-1, observed events are compared to the standard model background predictions, and the existence of b′ quarks having masses below 611 GeV/c2 is excluded at 95% confidence level.
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Hadron-Hadron Scattering
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Inglês
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Journal of High Energy Physics, v. 2012, n. 5, 2012.
