Search for a heavy resonance decaying to a top quark and a W boson at $\sqrt{s} =$ 13 TeV in the fully hadronic final state
(2021) Journal of High Energy Physics — Vol. 12 (2021)
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- 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$^{-1}$ marc: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.
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Bethani, A., Bruno, G., Bury, F., Caputo, C., David, P., Delaere, C., Delcourt, M., Donertas, I. S., Giammanco, A., Lemaitre, V., Mondal, K., Prisciandaro, J., Taliercio, A., Teklishyn, M., Vischia, P., Wertz, S., Wuyckens, S., & et al. (2021). Search for a heavy resonance decaying to a top quark and a W boson at $\sqrt{s} =$ 13 TeV in the fully hadronic final state. Journal of High Energy Physics, 12. https://doi.org/10.1007/JHEP12(2021)106 (Original work published 2021)