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Search for a right-handed W boson and a heavy neutrino in proton-proton collisions at √s= 13 TeV (CROSBI ID 322370)

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(CMS Collaboration) Tumasyan, Armen ; ... ; Antunović, Željko ; Brigljević, Vuko ; Ferenček, Dinko ; Giljanović, Duje ; Godinović, Nikola ; Kovač, Marko ; Lelas, Damir ; Majumder, Devdatta et al. Search for a right-handed W boson and a heavy neutrino in proton-proton collisions at √s= 13 TeV // The Journal of high energy physics, 4 (2022), 047, 38. doi: 10.1007/JHEP04(2022)047

Podaci o odgovornosti

Tumasyan, Armen ; ... ; Antunović, Željko ; Brigljević, Vuko ; Ferenček, Dinko ; Giljanović, Duje ; Godinović, Nikola ; Kovač, Marko ; Lelas, Damir ; Majumder, Devdatta ; Puljak, Ivica ; Roguljić, Matej ; Starodumov, Andrey ; Đurić, Senka ; Šuša, Tatjana ; Šćulac, Toni ; ... ; Vetens, Wren

CMS Collaboration

engleski

Search for a right-handed W boson and a heavy neutrino in proton-proton collisions at √s= 13 TeV

A search is presented for a right-handed W boson (WR) and a heavy neutrino (N), in a final state consisting of two same-flavor leptons (ee or μμ) and two quarks. The search is performed with the CMS experiment at the CERN LHC using a data sample of proton-proton collisions at a center-of-mass energy of 13 TeV corresponding to an integrated luminosity of 138 fb−1. The search covers two regions of phase space, one where the decay products of the heavy neutrino are merged into a single large-area jet, and one where the decay products are well separated. The expected signal is characterized by an excess in the invariant mass distribution of the final-state objects. No significant excess over the standard model background expectations is observed. The observations are interpreted as upper limits on the product of WR production cross sections and branching fractions assuming that couplings are identical to those of the standard model W boson. For N masses mN equal to half the WR mass mWR (mN = 0.2 TeV), mWR is excluded at 95% confidence level up to 4.7 (4.8) and 5.0 (5.4) TeV for the electron and muon channels, respectively. This analysis provides the most stringent limits on the WR mass to date.

Exotics ; Hadron-Hadron Scattering ; transverse momentum ; mass spectrum ; black hole ; vector boson ; leptonic decay ; leptoquark ; effective field theory ; Higgs

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Podaci o izdanju

4

2022.

047

38

objavljeno

1126-6708

1029-8479

10.1007/JHEP04(2022)047

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Fizika

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