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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

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; Gulhan, Doga Can; Klute, Markus; Lai, Yue Shi; Lee, Yen-Jie; Levin, Andrew Michael; McGinn, Christopher Francis; Niu, Xinmei; Paus, Christoph M. E.; Ralph, Duncan Kelley; Stephans, George S. F.; Velicanu, Dragos Alexandru; Veverka, Jan; Wang, J.; Wang, Ta-Wei; Wyslouch, Boleslaw; Yang, Mingming; Luckey Jr, P David; Roland, Christof E; Roland, Gunther M; Sumorok, Konstanty C; Varma, Mukund Madhav; Wyslouch, Victoria; ... Show more Show less
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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.
Date issued
2015-07
URI
http://hdl.handle.net/1721.1/98213
Department
Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Laboratory for Nuclear Science; Massachusetts Institute of Technology. School of Science
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
ISSN
03702693

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