Search for a pseudoscalar boson decaying into a Z boson and the 125 GeV Higgs boson in ℓ[superscript +]ℓ[superscript −]b[bar over b] final states
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Khachatryan-2015-Search for a pseudos.pdf
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Author(s)
Apyan, Aram
Barbieri, Richard Alexander
Baty, Austin Alan
Bierwagen, Katharina
Brandt, Stephanie Akemi
Busza, Wit
Cali, Ivan Amos
Di Matteo, Leonardo
Gomez-Ceballos, Guillelmo
Goncharov, Maxim
Date Issued
July 2015
Journal
Physics Letters B
Publisher
Elsevier
Citation
Khachatryan, V., et al. “Search for a Pseudoscalar Boson Decaying into a Z Boson and the 125 GeV Higgs Boson in ℓ[superscript +]ℓ[superscript −]b[bar over b] Final States.” Physics Letters B 748 (September 2015): 221–243. © 2015 CERN for the benefit of the CMS Collaboration
Version
Final published version
Abstract
Results are reported on a search for decays of a pseudoscalar A boson into a Z boson and a light scalar h boson, where the Z boson decays into a pair of oppositely-charged electrons or muons, and the h boson decays into b[bar over b]. The search is based on data from proton–proton collisions at a center-of-mass energy √s = 8 TeV collected with the CMS detector, corresponding to an integrated luminosity of 19.7 fb[superscript −1]. The h boson is assumed to be the standard model-like Higgs boson with a mass of 125 GeV. With no evidence for signal, upper limits are obtained on the product of the production cross section and the branching fraction of the A boson in the Zh channel. Results are also interpreted in the context of two Higgs doublet models.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Massachusetts Institute of Technology. School of Science
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DOI of Published Version
https://doi.org/10.1016/j.physletb.2015.07.010
