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

DOI
Publisher DOI
Abstract
A search is conducted for new resonances decaying into a W or Z boson and a 125 GeV Higgs boson in the vv̅bb̅, ℓ±vbb̅, and ℓ⁺ℓ⁻ bb̅ final states, where ℓ± = e± or μ± , in pp collisions at √s = 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 Wh 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 x 10⁻⁴ pb and 7.3 x 10⁻¹ pb
depending on the model and mass of the resonance.
Date Issued
2018-03
Publication Type
Article
Subject(s)
Language(s)
en
Author(s)
Rimoldi, Marco
Mullier, Geoffrey
Miucci, Antonio
Merlassino, Claudia
Meloni, Federico
Ereditato, Antonio
Additional Credits
Journal
Journal of High Energy Physics
Publisher
Springer
ISSN
1029-8479
Related URL(s)
https://boris.unibe.ch/131641
Access(Rights)
open.access
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