Search for vector-like quarks in events with two oppositely charged leptons and jets in proton–proton collisions at √s=13TeV; European Physical Journal C; Vol. 79, iss. 4

Search for vector-like quarks in events with two oppositely charged leptons and jets in proton–proton collisions at √s=13TeV; European Physical Journal C; Vol. 79, iss. 4

Bibliografski detalji
Parent link:European Physical Journal C
Vol. 79, iss. 4.— 2019.— [364, 31 p.]
Autor kompanije: Национальный исследовательский Томский политехнический университет Исследовательская школа физики высокоэнергетических процессов
Daljnji autori: Sirunyan A. M., Tumasyan A. R., Adam W. Wolfgang, Ambrogi F. Federico, Babaev A. A. Anton Anatoljevich
Sažetak:Title screen
A search for the pair production of heavy vector-like partners TT and BB of the top and bottom quarks has been performed by the CMS experiment at the CERN LHC using proton-proton collisions at s√=13TeVs=13TeV. The data sample was collected in 2016 and corresponds to an integrated luminosity of 35.9fb−1fb−1. Final states studied for TT¯TT¯ production include those where one of the TT quarks decays via T→tZT→tZ and the other via T→bWT→bW, tZtZ, or tHtH, where HH is a Higgs boson. For the BB¯BB¯ case, final states include those where one of the BB quarks decays via B→bZB→bZ and the other B→tWB→tW, bZbZ, or bHbH. Events with two oppositely charged electrons or muons, consistent with coming from the decay of a ZZ 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 TT and BB quarks for a range of branching fractions. Assuming 100% branching fractions for T→tZT→tZ, and B→bZB→bZ, TT and BB quark mass values below 1280 and 1130GeVGeV, respectively, are excluded.
Режим доступа: по договору с организацией-держателем ресурса
Jezik:engleski
Izdano: 2019
Teme:
электронный ресурс
труды учёных ТПУ
hadron-hadron scattering (experiments)
адрон-адронные столкновения
beyond standard model
Higgs physics
Online pristup:https://doi.org/10.1140/epjc/s10052-019-6855-8
Format: Elektronički Poglavlje knjige
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=662088

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