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Search for narrow high-mass resonances in proton–proton collisions at √s = 8 TeV decaying to a Z and a Higgs boson

Author(s)
Apyan, Aram; Barbieri, Richard Alexander; Bierwagen, Katharina; 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; Luckey, P. David, Jr.; Paus, Christoph M. E.; Ralph, Duncan Kelley; Roland, Christof E.; Roland, Gunther M.; Stephans, George S. F.; Sumorok, Konstanty C.; Velicanu, Dragos Alexandru; Veverka, Jan; Wyslouch, Boleslaw; Yang, Mingming; Zanetti, Marco; Zhukova, Victoria; ... Show more Show less
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Abstract
A search for a narrow, high-mass resonance decaying into Z and Higgs (H) bosons is presented. The final state studied consists of a merged jet pair and a τ pair resulting from the decays of Z and H bosons, respectively. The analysis is based on a data sample of proton–proton collisions at a center-of-mass energy of 8 TeV, collected with the CMS experiment in 2012, and corresponding to an integrated luminosity of 19.7 fb[superscript −1]. In the resonance mass range of interest, which extends from 0.8 to 2.5 TeV, the Z and H bosons are produced with large momenta, which implies that the final products of the two quarks or the two τ leptons must be detected within a small angular interval. From a combination of all possible decay modes of the τ leptons, production cross sections in a range between 0.9 and 27.8 fb are excluded at 95% confidence level, depending on the resonance mass.
Date issued
2015-07
URI
http://hdl.handle.net/1721.1/98216
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
“Search for Narrow High-Mass Resonances in Proton–proton Collisions at √s = 8 TeV Decaying to a Z and a Higgs Boson.” Physics Letters B 748 (September 2015): 255–277. © 2015 CERN for the benefit of the CMS Collaboration
Version: Final published version
ISSN
03702693

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