Evidence for tWZ production in proton-proton collisions at √s = 13 TeV in multilepton final states

Hayrapetyan, A.; Tumasyan, A.; Adam, W.; Andrejkovic, J.W.; Bergauer, T.; Chatterjee, S.; Damanakis, K.; Dragicevic, M.; Escalante Del Valle, A.; Hussain, P.S.; Bevilacqua, T.; Caminada, L.; Ebrahimi, A.; Erdmann, W.; Horisberger, R.; Ingram, Q.; Kaestli, H.C.; Kotlinski, D.; Lange, C.; Missiroli, M.; Noehte, L.; Rohe, T.; Zhokin, A.

doi:10.1016/j.physletb.2024.138815

Evidence for tWZ production in proton-proton collisions at √s = 13 TeV in multilepton final states

Hayrapetyan A, Tumasyan A, Adam W, Andrejkovic JW, Bergauer T, Chatterjee S, Damanakis K, Dragicevic M, Escalante Del Valle A, Hussain PS, Bevilacqua T, Caminada L, Ebrahimi A, Erdmann W, Horisberger R, Ingram Q, Kaestli HC, Kotlinski D, Lange C, Missiroli M, Noehte L, Rohe T, Zhokin A, et al.

Citation

Hayrapetyan, A., Tumasyan, A., Adam, W., Andrejkovic, J. W., Bergauer, T., Chatterjee, S., … Zhokin, A. (2024). Evidence for tWZ production in proton-proton collisions at √s = 13 TeV in multilepton final states. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 855, 138815 (25 pp.). https://doi.org/10.1016/j.physletb.2024.138815

Persistent URL https://www.dora.lib4ri.ch/psi/islandora/object/psi:64745

The first evidence for the standard model production of a top quark in association with a W boson and a Z boson is reported. The measurement is performed in multilepton final states, where the Z boson is reconstructed via its decays to electron or muon pairs. At least one W boson, associated or from top quark decay, decays leptonically, too. The analysed data were recorded by the CMS experiment at the CERN LHC in 2016–2018 in proton-proton collisions at s=13 TeV, and correspond to an integrated luminosity of 138 fb⁻¹. The measured cross section is 354±54(stat)±95(syst) fb, and corresponds to a statistical significance of 3.4 standard deviations.

Details

Publication Type

Journal Article

Title

Evidence for tWZ production in proton-proton collisions at √s = 13 TeV in multilepton final states

Author(s)

Hayrapetyan, A.

Tumasyan, A.

Adam, W.

Andrejkovic, J.W.

Bergauer, T.

Chatterjee, S.