: 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 / Add, G.; Aloisio, A.; Alviggi, M.; Auricchio, S.; Canale, V.; Cirotto, F.; Della Pietra, M.; Merola, L.; Massarotti, P.; Rossi, E.; Conventi, F.; Izzo, V.; Sekhniaidze, G. G.; Camerlingo, M. T.; Iengo, P.; Di Donato, C.; De Asmundis, R.; Carlino, G.; Al, Et. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 132:2(2024), p. 021803. [10.1103/PhysRevLett.132.021803]
Evidence for the Higgs Boson Decay to a Z Boson and a Photon at the LHC
A. Aloisio;M. Alviggi;S. Auricchio;V. Canale;F. Cirotto;M. Della Pietra;L. Merola;P. Massarotti;E. Rossi;LOFFREDO, Salvatore
2024
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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
