A search is presented for the production of vector-like quark pairs, TT‾ or YY‾ with electric charge of 2/3 (T) or −4/3 (Y), in proton–proton collisions at s=13TeV. The data were collected by the CMS experiment at the LHC in 2016 and correspond to an integrated luminosity of 35.8fb −1 . The T and Y quarks are assumed to decay exclusively to a W boson and a b quark. The search is based on events with a single isolated electron or muon, large missing transverse momentum, and at least four jets with large transverse momenta. In the search, a kinematic reconstruction of the final state observables is performed, which would permit a signal to be detected as a narrow mass peak (≈7% resolution). The observed number of events is consistent with the standard model prediction. Assuming strong pair production of the vector-like quarks and a 100% branching fraction to bW, a lower limit of 1295 GeV at 95% confidence level is set on the T and Y quark masses

Sirunyan, A., Tumasyan, A., Adam, W., Ambrogi, F., Asilar, E., Bergauer, T., et al. (2018). Search for pair production of vector-like quarks in the bWb‾W channel from proton–proton collisions at s=13TeV. PHYSICS LETTERS. SECTION B, 779, 82-106 [10.1016/j.physletb.2018.01.077].

Search for pair production of vector-like quarks in the bWb‾W channel from proton–proton collisions at s=13TeV

Brianza, L.;Brivio, F.;Ciriolo, V.;Dinardo, M. E.;Fiorendi, S.;Ghezzi, A.;Govoni, P.;Manzoni, R. A.;Paganoni, M.;Pauwels, K.;Pigazzini, S.;Ragazzi, S.;Tabarelli de Fatis, T.;Lucchini, M. T.;Gerosa, R.;Massironi, A.;De Guio, F.;
2018

Abstract

A search is presented for the production of vector-like quark pairs, TT‾ or YY‾ with electric charge of 2/3 (T) or −4/3 (Y), in proton–proton collisions at s=13TeV. The data were collected by the CMS experiment at the LHC in 2016 and correspond to an integrated luminosity of 35.8fb −1 . The T and Y quarks are assumed to decay exclusively to a W boson and a b quark. The search is based on events with a single isolated electron or muon, large missing transverse momentum, and at least four jets with large transverse momenta. In the search, a kinematic reconstruction of the final state observables is performed, which would permit a signal to be detected as a narrow mass peak (≈7% resolution). The observed number of events is consistent with the standard model prediction. Assuming strong pair production of the vector-like quarks and a 100% branching fraction to bW, a lower limit of 1295 GeV at 95% confidence level is set on the T and Y quark masses
Articolo in rivista - Articolo scientifico
Hadron - Hadron collisions (experiments)
English
2018
779
82
106
none
Sirunyan, A., Tumasyan, A., Adam, W., Ambrogi, F., Asilar, E., Bergauer, T., et al. (2018). Search for pair production of vector-like quarks in the bWb‾W channel from proton–proton collisions at s=13TeV. PHYSICS LETTERS. SECTION B, 779, 82-106 [10.1016/j.physletb.2018.01.077].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/192469
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