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.

Sirunyan A.M., Tumasyan A., Adam W., Bergauer T., Dragicevic M., Escalante Del Valle A., et al. (2021). Search for a heavy resonance decaying to a top quark and a W boson at √s = 13 TeV in the fully hadronic final state. JOURNAL OF HIGH ENERGY PHYSICS, 2021(12), 0-45 [10.1007/JHEP12(2021)106].

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

Battilana C.;Bonacorsi D.;Borgonovi L.;Braibant-Giacomelli S.;Cuffiani M.;Diotalevi T.;Fanfani A.;Fontanesi E.;Giommi L.;Guiducci L.;Iemmi F.;Primavera F.;Rovelli T.;Siroli G. P.;
2021

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.
2021
Sirunyan A.M., Tumasyan A., Adam W., Bergauer T., Dragicevic M., Escalante Del Valle A., et al. (2021). Search for a heavy resonance decaying to a top quark and a W boson at √s = 13 TeV in the fully hadronic final state. JOURNAL OF HIGH ENERGY PHYSICS, 2021(12), 0-45 [10.1007/JHEP12(2021)106].
Sirunyan A.M.; Tumasyan A.; Adam W.; Bergauer T.; Dragicevic M.; Escalante Del Valle A.; Fruhwirth R.; Jeitler M.; Krammer N.; Lechner L.; Liko D.; Mi...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/859155
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