Evidence for the Higgs Boson Decay to a Z Boson and a Photon at the LHC

Physical Review Letters 2024
Kārlis Dreimanis, Antra Gaile, Guntis Pikurs, Andris Potrebko, Markus Seidel, Viesturs Veckalns, CMS Collaboration

The first evidence for the Higgs boson decay to a Formula Presented 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 Formula Presented for each experiment, at a center-of-mass energy of 13 TeV. The measured signal yield is Formula Presented times the standard model prediction, and agrees with the theoretical expectation within 1.9 standard deviations.

DOI
10.1103/PhysRevLett.132.021803
Hyperlink
https://link.aps.org/doi/10.1103/PhysRevLett.132.021803

The CMS Collaboration, A.Hayrapetyan, K.Dreimanis, A.Gaile, G.Pikurs, A.Potrebko, M.Seidel, V.Veckalns ... [et al.]. Evidence for the Higgs Boson Decay to a Z Boson and a Photon at the LHC. Physical Review Letters, 2024, Vol. 132, No. 2, Article number 021803. ISSN 0031-9007. Available from: doi:10.1103/PhysRevLett.132.021803

Publication language
English (en)