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Search for heavy resonances decaying into a W or Z boson and a Higgs boson in final states with leptons and b-jets in 36fb-1 of vs=13 TeV pp collisions with the ATLAS detector

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posted on 2023-06-20, 14:17 authored by Benedict AllbrookeBenedict Allbrooke, Lily AsquithLily Asquith, Alessandro CerriAlessandro Cerri, C A Chavez Barajas, Antonella De SantoAntonella De Santo, Fabrizio SalvatoreFabrizio Salvatore, I Santoyo Castillo, K Suruliz, Mark SuttonMark Sutton, Iacopo Vivarelli, The ATLAS Collaboration
A search is conducted for new resonances decaying into a W or Z boson and a 125 GeV Higgs boson in the ??¯bb¯, l±?bb¯, and l+l-bb¯ final states, where l± = e± or µ±, in pp collisions at vs=13 TeV. The data used correspond to a total integrated luminosity of 36.1 fb-1 collected with the ATLAS detector at the Large Hadron Collider during the 2015 and 2016 data-taking periods. The search is conducted by examining the reconstructed invariant or transverse mass distributions of W h and Zh candidates for evidence of a localised excess in the mass range of 220 GeV up to 5 TeV. No significant excess is observed and the results are interpreted in terms of constraints on the production cross-section times branching fraction of heavy W ' and Z' resonances in heavy-vector-triplet models and the CP-odd scalar boson A in two-Higgs-doublet models. Upper limits are placed at the 95% confidence level and range between 9.0 × 10-4 pb and 7.3 × 10-1 pb depending on the model and mass of the resonance.

Funding

ATLAS; G0275; STFC-SCIENCE AND TECHNOLOGY FACILITIES COUNCIL; ST/I006048/1

History

Publication status

  • Published

File Version

  • Published version

Journal

Journal of High Energy Physics

ISSN

1126-6708

Publisher

Springer Verlag

Issue

174

Volume

2018

Department affiliated with

  • Physics and Astronomy Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2018-05-29

First Open Access (FOA) Date

2018-05-29

First Compliant Deposit (FCD) Date

2018-05-29

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