Search for a CP-odd Higgs boson decaying to Zh in pp collisions at √s = 8 TeV with the ATLAS detector
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Collaboration-2015-Search for a CP-odd.pdf
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3.22 MB
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Author(s)
Taylor, Frank E.
Date Issued
March 2015
Journal
Physics Letters B
Publisher
Elsevier
Citation
Aad, G., et al. “Search for a CP-Odd Higgs Boson Decaying to Zh in Pp Collisions at √s = 8 TeV with the ATLAS Detector.” Physics Letters B 744 (May 2015): 163–183.
Version
Final published version
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[superscript −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[bar over f]) are 0.098–0.013 pb for f = τ and 0.57–0.014 pb for f=b in a range of [subscript mA] = 220–1000 GeV. The results are combined and interpreted in the context of two-Higgs-doublet models.
MIT Department
Massachusetts Institute of Technology. Department of Physics
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DOI of Published Version
https://doi.org/10.1016/j.physletb.2015.03.054
