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Search for a heavy Higgs boson decaying into a Z boson and another heavy Higgs boson in the llbb final state in pp collisions at vs =13 TeV with the ATLAS detector
journal contribution
posted on 2023-06-09, 15:51 authored by The ATLAS Collaboration, 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, Kate ShawKate Shaw, C Y Shehu, Thomas StevensonThomas Stevenson, K Suruliz, Mark SuttonMark Sutton, Fabio Tresoldi, Fabrizio Trovato, Iacopo Vivarelli, E Winkles, O J Winston, othersA search for a heavy neutral Higgs boson, A , decaying into a Z boson and another heavy Higgs boson, H,is performed using a data sample corresponding to an integrated luminosity of 36.1 fb -1 from proton-proton collisions at vs =13 TeV recorded in 2015 and 2016 by the ATLAS detector at the Large Hadron Collider. The search considers the Z boson decaying to electrons or muons and the H boson into a pair of b -quarks. No evidence for the production of an A boson is found. Considering each production process separately, the 95% confidence-level upper limits on the pp?A?ZH production cross-section times the branching ratio H?bb are in the range of 14-830 fb for the gluon-gluon fusion process and 26-570 fb for the b -associated process for the mass ranges 130-700 GeV of the H boson and process for the mass ranges 130-700 GeV of the H boson and 230-800 GeV of the A boson. The results are interpreted in the context of the two-Higgs-doublet model.
History
Publication status
- Published
File Version
- Published version
Journal
Physics Letters BISSN
0370-2693Publisher
ElsevierExternal DOI
Volume
783Page range
392-414Department 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
2018-11-09Usage metrics
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