Home > Research > Publications & Outputs > Search for a heavy Higgs boson decaying into a ...

Links

Text available via DOI:

View graph of relations

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 √s =13 TeV with the ATLAS detector

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Published
  • The ATLAS collaboration
Close
<mark>Journal publication date</mark>10/08/2018
<mark>Journal</mark>Physics Letters B
Volume783
Number of pages23
Pages (from-to)392-414
Publication StatusPublished
<mark>Original language</mark>English

Abstract

A 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−1from proton–proton collisions at √s =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 230–800 GeV of the A boson. The results are interpreted in the context of two-Higgs-doublet models.