The first evidence for the Higgs boson decay to a Z boson and a photon is presented, with a statistical significance of 3.4 standard deviations. The result is derived from a combined analysis of the searches performed by the ATLAS and CMS Collaborations with proton -proton collision datasets collected at the CERN Large Hadron Collider (LHC) from 2015 to 2018. These correspond to integrated luminosities of around 140 fb-1 for each experiment, at a center -of -mass energy of 13 TeV. The measured signal yield is 2.2 +/- 0.7 times the standard model prediction, and agrees with the theoretical expectation within 1.9 standard deviations.
Evidence for the Higgs boson decay to a Z boson and a photon at the LHC
Cavasinni, V.;Francavilla, P.;Roda, C.;Verducci, M.;Calligaris, L.;Aimè, C.;Asenov, P.;Bianchini, L.;Bossini, E.;Ciocci, M. A.;Donato, S.;Messineo, A.;Musich, M.;Rizzi, A.;Marini, A. C.;
2024-01-01
Abstract
The first evidence for the Higgs boson decay to a Z boson and a photon is presented, with a statistical significance of 3.4 standard deviations. The result is derived from a combined analysis of the searches performed by the ATLAS and CMS Collaborations with proton -proton collision datasets collected at the CERN Large Hadron Collider (LHC) from 2015 to 2018. These correspond to integrated luminosities of around 140 fb-1 for each experiment, at a center -of -mass energy of 13 TeV. The measured signal yield is 2.2 +/- 0.7 times the standard model prediction, and agrees with the theoretical expectation within 1.9 standard deviations.File | Dimensione | Formato | |
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PhysRevLett.132.021803.pdf
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