Search for a heavy resonance decaying to a top quark and a W boson at √s = 13 TeV in the fully hadronic final state

Bortignon P.
Membro del Collaboration Group
;
2021-01-01

Abstract

A search for a heavy resonance decaying to a top quark and a W boson in the fully hadronic final state is presented. The analysis is performed using data from proton-proton collisions at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 137 fb−1 recorded by the CMS experiment at the LHC. The search is focused on heavy resonances, where the decay products of each top quark or W boson are expected to be reconstructed as a single, large-radius jet with a distinct substructure. The production of an excited bottom quark, b*, is used as a benchmark when setting limits on the cross section for a heavy resonance decaying to a top quark and a W boson. The hypotheses of b* quarks with left-handed, right-handed, and vector-like chiralities are excluded at 95% confidence level for masses below 2.6, 2.8, and 3.1 TeV, respectively. These are the most stringent limits on the b* quark mass to date, extending the previous best limits by almost a factor of two. [Figure not available: see fulltext.]
2021
Inglese
2021
12
106
https://link.springer.com/article/10.1007/JHEP12(2021)106
Esperti anonimi
scientifica
Beyond Standard Model
Hadron-Hadron scattering (experiments)
Heavy quark production
Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Bergauer, T.; Dragicevic, M.; Escalante Del Valle, A.; Fruhwirth, R.; Jeitler, M.; Krammer, N.; Lechner, L.; ...espandi
1.1 Articolo in rivista
info:eu-repo/semantics/article
1 Contributo su Rivista::1.1 Articolo in rivista
262
2324
none
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