Search for a CP-odd Higgs boson decaying to Zh in pp collisions at √s=8 TeV with the ATLAS detector

ATLAS Collaboration

Research output: Contribution to journalArticle

78 Citations (Scopus)

Abstract

A search for a heavy, CP-odd Higgs boson, A, decaying into a Z boson and a 125 GeV Higgs boson, h, with the ATLAS detector at the LHC is presented. The search uses proton–proton collision data at a centre-of-mass energy of 8 TeV corresponding to an integrated luminosity of 20.3 fb−1. Decays of CP-even h bosons to ττ or bb pairs with the Z boson decaying to electron or muon pairs are considered, as well as h→bb decays with the Z boson decaying to neutrinos. No evidence for the production of an A boson in these channels is found and the 95% confidence level upper limits derived for σ(gg→A)×BR(A→Zh)×BR(h→ff¯) are 0.098–0.013 pb for f=τ and 0.57–0.014 pb for f=b in a range of mA=220–1000 GeV. The results are combined and interpreted in the context of two-Higgs-doublet models.

Original languageEnglish
Pages (from-to)163-183
Number of pages21
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume744
DOIs
Publication statusPublished - 2015 May 11

Keywords

  • ATLAS
  • BSM Higgs boson

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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