Publication:
Search for vector-like quarks in events with two oppositely charged leptons and jets in proton-proton collisions at root s=13TeV

Дата
2019
Авторы
Sirunyan, A. M.
Tumasyan, A.
Adam, W.
Ambrogi, F.
Chistov, R.
Danilov, M.
Parygin, P.
Tarkovskii, E.
Rusinov, V.
Matveev, V.
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Институт ядерной физики и технологий
Цель ИЯФиТ и стратегия развития - создание и развитие научно-образовательного центра мирового уровня в области ядерной физики и технологий, радиационного материаловедения, физики элементарных частиц, астрофизики и космофизики.
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Аннотация
A search for the pair production of heavy vector-like partners T and B of the top and bottom quarks has been performed by the CMS experiment at the CERN LHC using proton-proton collisions at . The data sample was collected in 2016 and corresponds to an integrated luminosity of 35.9 production include those where one of the T quarks decays via TtZ and the other via TbW, tZ, or tH, where H is a Higgs boson. For the BB case, final states include those where one of the B quarks decays via BbZ and the other BtW, bZ, or bH. Events with two oppositely charged electrons or muons, consistent with coming from the decay of a Z boson, and jets are investigated. The number of observed events is consistent with standard model background estimations. Lower limits at 95% confidence level are placed on the masses of the T and B quarks for a range of branching fractions. Assuming 100% branching fractions for TtZ, and BbZ, T and B quark mass values below 1280 and 1130 respectively, are excluded.
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Search for vector-like quarks in events with two oppositely charged leptons and jets in proton-proton collisions at root s=13TeV / Sirunyan, AM [et al.] // European Physical Journal C. - 2019. - 79. - № 4. - 10.1140/epjc/s10052-019-6855-8
URI
https://www.doi.org/10.1140/epjc/s10052-019-6855-8
 https://www.scopus.com/record/display.uri?eid=2-s2.0-85072183946&origin=resultslist
 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000466094100001
 https://openrepository.mephi.ru/handle/123456789/17886
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