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Search for single production of vector-like quarks decaying into a b quark and a W boson in proton-proton collisions at sqrt(s) = 13 TeV (CROSBI ID 247172)

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(CMS Collaboration) Sirunyan, Albert ; ... ; Mesić, Benjamin ; Godinović, Nikola ; Puljak, Ivica ; Starodumov, Andrey ; Morović, Srećko ; Lelas, Damir ; Kovač, Marko ; Đurić, Senka et al. Search for single production of vector-like quarks decaying into a b quark and a W boson in proton-proton collisions at sqrt(s) = 13 TeV // Physics letters. B, 772 (2017), 634-656. doi: 10.1016/j.physletb.2017.07.022

Podaci o odgovornosti

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

CMS Collaboration

engleski

Search for single production of vector-like quarks decaying into a b quark and a W boson in proton-proton collisions at sqrt(s) = 13 TeV

A search is presented for a heavy vector-like quark, decaying into a b quark and a W boson, which is produced singly in association with a light flavor quark and a b quark. The analysis is performed using a data sample of proton-proton collisions at a center-of-mass energy of sqrt(s) = 13 TeV collected at the LHC in 2015. The data set used in the analysis corresponds to an integrated luminosity of 2.3 inverse femtobarns. The search is carried out using events containing one electron or muon, at least one b-tagged jet with large transverse momentum, at least one jet in the forward region of the detector, and missing transverse momentum. No excess over the standard model prediction is observed. Upper limits are placed on the production cross section of heavy exotic quarks: a T quark with a charge of 2/3, and a Y quark with a charge of -4/3. For Y quarks with coupling of 0.5 and B(Y to bW) = 100%, the observed (expected) lower mass limits are 1.40 (1.0) TeV. This is the most stringent limit to date on the single production of the Y vector-like quark.

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

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Podaci o izdanju

772

2017.

634-656

objavljeno

0370-2693

0370-2693

10.1016/j.physletb.2017.07.022

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Fizika

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