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Search for heavy bottom-like quarks in 4.9 inverse femtobarns of pp collisions at \sqrt{s} = 7 TeV


CMS Collaboration; Chatrchyan, S; Khachatryan, V; Aguiló, E; Amsler, C; Chiochia, V; De Visscher, S; Favaro, C; Ivova Rikova, M; Millan Mejias, B; Otiougova, P; Robmann, P; Snoek, H; Tupputi, S; Verzetti, M; et al (2012). Search for heavy bottom-like quarks in 4.9 inverse femtobarns of pp collisions at \sqrt{s} = 7 TeV. Journal of High Energy Physics, 2012(5):123.

Abstract

Results are presented from a search for heavy bottom-like quarks, pair-produced in pp collisions at s√=7 TeV, undertaken with the CMS experiment at the LHC. The b′ quarks are assumed to decay exclusively to tW. The b′b−′→tW−t−W+ 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/c 2 is excluded at 95% confidence level.

Results are presented from a search for heavy bottom-like quarks, pair-produced in pp collisions at s√=7 TeV, undertaken with the CMS experiment at the LHC. The b′ quarks are assumed to decay exclusively to tW. The b′b−′→tW−t−W+ 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/c 2 is excluded at 95% confidence level.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Language:English
Date:2012
Deposited On:11 Mar 2013 16:00
Last Modified:05 Apr 2016 16:39
Publisher:Springer
ISSN:1029-8479
Additional Information:The original publication is available at www.springerlink.com
Publisher DOI:https://doi.org/10.1007/JHEP05(2012)123
Permanent URL: https://doi.org/10.5167/uzh-75954

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