Evidence for the Higgs Boson Decay to a Z Boson and a Photon at the LHC
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.
- Publication:
-
Physical Review Letters
- Pub Date:
- January 2024
- DOI:
- 10.1103/PhysRevLett.132.021803
- arXiv:
- arXiv:2309.03501
- Bibcode:
- 2024PhRvL.132b1803A
- Keywords:
-
- High Energy Physics - Experiment
- E-Print:
- 48 pages in total, author list starting page 12, 3 figures. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2022-22/