The observation of WWγ production in proton-proton collisions at a center-of-mass energy of 13 TeV with an integrated luminosity of 138 fb−1 is presented. The observed (expected) significance is 5.6 (5.1) standard deviations. Events are selected by requiring exactly two leptons (one electron and one muon) of opposite charge, moderate missing transverse momentum, and a photon. The measured fiducial cross section for WWγ is 5.9 ± 0.8 (stat) ± 0.8 (syst) ± 0.7 (modeling) fb, in agreement with the next-to-leading order quantum chromodynamics prediction. The analysis is extended with a search for the associated production of the Higgs boson and a photon, which is generated by a coupling of the Higgs boson to light quarks. The result is used to constrain the Higgs boson couplings to light quarks.

Hayrapetyan, A., Tumasyan, A., Adam, W., Andrejkovic, J. ., Bergauer, T., Chatterjee, S., et al. (2024). Observation of WWγ production and search for Hγ production in proton-proton collisions at √s = 13 TeV. PHYSICAL REVIEW LETTERS, 132(12), 1-20 [10.1103/physrevlett.132.121901].

Observation of WWγ production and search for Hγ production in proton-proton collisions at √s = 13 TeV

Battilana, C.;Bonacorsi, D.;Borgonovi, L.;Castro, A.;Cuffiani, M.;Diotalevi, T.;Fanfani, A.;Giommi, L.;Guiducci, L.;Rovelli, T.;Siroli, G.  P.;
2024

Abstract

The observation of WWγ production in proton-proton collisions at a center-of-mass energy of 13 TeV with an integrated luminosity of 138 fb−1 is presented. The observed (expected) significance is 5.6 (5.1) standard deviations. Events are selected by requiring exactly two leptons (one electron and one muon) of opposite charge, moderate missing transverse momentum, and a photon. The measured fiducial cross section for WWγ is 5.9 ± 0.8 (stat) ± 0.8 (syst) ± 0.7 (modeling) fb, in agreement with the next-to-leading order quantum chromodynamics prediction. The analysis is extended with a search for the associated production of the Higgs boson and a photon, which is generated by a coupling of the Higgs boson to light quarks. The result is used to constrain the Higgs boson couplings to light quarks.
2024
Hayrapetyan, A., Tumasyan, A., Adam, W., Andrejkovic, J. ., Bergauer, T., Chatterjee, S., et al. (2024). Observation of WWγ production and search for Hγ production in proton-proton collisions at √s = 13 TeV. PHYSICAL REVIEW LETTERS, 132(12), 1-20 [10.1103/physrevlett.132.121901].
Hayrapetyan, A.; Tumasyan, A.; Adam, W.; Andrejkovic, J.  W.; Bergauer, T.; Chatterjee, S.; Damanakis, K.; Dragicevic, M.; Escalante Del Valle, A.; Hu...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/1002806
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