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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 36 fb(-1) of root s=13 TeV pp collisions with the ATLAS detector

Published version
Peer-reviewed

Type

Article

Change log

Authors

Aaboud, M 
Aad, G 
Abbott, B 
Abdinov, O 
Abeloos, B 

Abstract

A search is conducted for new resonances decaying into a W or Z boson and a 125 GeV Higgs boson in the νν¯¯¯bb¯¯, ℓ±νbb¯¯, and ℓ+ℓ−bb¯¯ 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 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.

Description

Keywords

Beyond Standard Model, Hadron-Hadron scattering (experiments)

Journal Title

Journal of High Energy Physics

Conference Name

Journal ISSN

1126-6708
1029-8479

Volume Title

2018

Publisher

Springer Nature
Sponsorship
Science and Technology Facilities Council (ST/I005846/1)
Science and Technology Facilities Council (ST/J00488X/1)
Science and Technology Facilities Council (ST/K003666/1)
Science and Technology Facilities Council (ST/L005662/1)
Science and Technology Facilities Council (ST/M006417/1)
Science and Technology Facilities Council (ST/F003625/1)
Science and Technology Facilities Council (ST/H001093/1)
Science and Technology Facilities Council (ST/H001093/2)
Science and Technology Facilities Council (PP/E000347/1)
Science and Technology Facilities Council (ST/K001361/1)
Science and Technology Facilities Council (ST/N000234/1)
Science and Technology Facilities Council (ST/R504671/1)