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Search for Higgs boson decays to beyond-the-Standard-Model light bosons in four-lepton events with the ATLAS detector at vs =13 TeV
journal contribution
posted on 2023-06-09, 15:49 authored by N L Abraham, Benedict AllbrookeBenedict Allbrooke, Lily AsquithLily Asquith, Alessandro CerriAlessandro Cerri, C A Chavez Barajas, Antonella De SantoAntonella De Santo, Samuel Jones, G Lerner, F Miano, Fabrizio SalvatoreFabrizio Salvatore, I Santoyo Castillo, C Y Shehu, Kate ShawKate Shaw, Thomas StevensonThomas Stevenson, K Suruliz, Mark SuttonMark Sutton, Fabio Tresoldi, Iacopo Vivarelli, E Winkels, O J Winston, The ATLAS Collaboration, othersA search is conducted for a new beyond-the-Standard-Model boson using events where a Higgs boson with mass 125 GeV decays to four leptons (l= e or µ ). This decay is presumed to occur via an intermediate state which contains one or two on-shell, promptly decaying bosons: H?ZX/XX?4l , where X is a new vector boson Z d or pseudoscalar a with mass between 1 and 60 GeV. The search uses pp collision data collected with the ATLAS detector at the LHC with an integrated luminosity of 36.1 fb -1 at a centre-of-mass energy s v =13 TeV. No significant excess of events above Standard Model background predictions is observed; therefore, upper limits at 95% confidence level are set on model-independent fiducial cross-sections, and on the Higgs boson decay branching ratios to vector and pseudoscalar bosons in two benchmark models.
History
Publication status
- Published
File Version
- Published version
Journal
Journal of High Energy PhysicsISSN
1126-6708Publisher
Springer VerlagExternal DOI
Issue
6Volume
9Page range
166 1-50Department affiliated with
- Physics and Astronomy Publications
Research groups affiliated with
- Experimental Particle Physics Research Group Publications
Full text available
- Yes
Peer reviewed?
- Yes
Legacy Posted Date
2018-11-12First Open Access (FOA) Date
2018-11-12First Compliant Deposit (FCD) Date
2018-11-08Usage metrics
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