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Search for vector-like quarks in events with two oppositely charged leptons and jets in proton-proton collisions at √s=13TeV (CROSBI ID 266932)

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(CMS Collaboration) Sirunyan, Albert ; ... ; Đurić, Senka ; Lelas, Damir ; Roguljić, Matej ; Godinović, Nikola ; Puljak, Ivica ; Šćulac, Toni ; Mesić, Benjamin ; Šuša, Tatjana et al. 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 : particles and fields, 79 (2019), 4; 364, 31. doi: 10.1140/epjc/s10052-019-6855-8

Podaci o odgovornosti

Sirunyan, Albert ; ... ; Đurić, Senka ; Lelas, Damir ; Roguljić, Matej ; Godinović, Nikola ; Puljak, Ivica ; Šćulac, Toni ; Mesić, Benjamin ; Šuša, Tatjana ; Kovač, Marko ; Ferenček, Dinko ; Antunović, Željko ; Starodumov, Andrey ; Brigljević, Vuko ; Luetić, Jelena ; Kadija, Krešo ; ... ; Woods, Nate

CMS Collaboration

engleski

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

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 s√=13TeV. The data sample was collected in 2016 and corresponds to an integrated luminosity of 35.9fb−1. Final states studied for TT¯ production include those where one of the T quarks decays via T→tZ and the other via T→bW, 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 B→bZ and the other B→tW, 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 T→tZ, and B→bZ, T and B quark mass values below 1280 and 1130GeV, respectively, are excluded.

High energy physics, Experimental particle physics, LHC, CMS, Standard Model

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Podaci o izdanju

79 (4)

2019.

364

31

objavljeno

1434-6044

1434-6052

10.1140/epjc/s10052-019-6855-8

Povezanost rada

Fizika

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