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

Allison, Lee and Barton, Adam and Beattie, Michael and Borissov, Guennadi and Bouhova-Thacker, Eva and Chilingarov, Alexandre and Dearnaley, William and Fox, Harald and Grimm, Kathryn and Henderson, Robert and Hughes, Gareth and Jones, Roger William Lewis and Kartvelishvili, Vakhtang and Long, Robin and Love, Peter and Maddocks, Harvey and Smizanska, Maria and Walder, James (2015) Search for a CP-odd Higgs boson decaying to Zh in pp collisions at √s=8TeV with the ATLAS detector. Physics Letters B, 744. pp. 163-183. ISSN 0370-2693

PDF (1-s2.0-S0370269315002257-main)
1_s2.0_S0370269315002257_main.pdf - Published Version
Available under License Creative Commons Attribution.

Download (3MB)


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 → f ¯f ) 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.

Item Type:
Journal Article
Journal or Publication Title:
Physics Letters B
Additional Information:
This is an open access article under the CC BY license ( Funded by SCOAP3.
Uncontrolled Keywords:
ID Code:
Deposited By:
Deposited On:
18 Jun 2015 06:01
Last Modified:
29 Sep 2020 02:20