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Search for Zγ resonances using leptonic and hadronic final states in proton-proton collisions at √s=13 TeV

Author(s)
Abercrombie, Daniel Robert; Allen, Brandon Leigh; Azzolini, Virginia; Barbieri, Richard Alexander; Baty, Austin Alan; Bi, Ran; Brandt, Stephanie Akemi; Busza, Wit; Cali, Ivan Amos; D'Alfonso, Mariarosaria; Gomez-Ceballos, Guillelmo; Goncharov, Maxim; Hsu, Dylan George; Hu, Miao; Iiyama, Yutaro; Innocenti, Gian Michele; Klute, Markus; Kovalskyi, Dmytro; Lee, Yen-Jie; Levin, Andrew Michael; Luckey Jr, P David; Maier, Benedikt; Marini, Andrea Carlo; McGinn, Christopher Francis; Mironov, Camelia Maria; Narayanan, Siddharth Madhavan; Niu, Xinmei; Paus, Christoph M. E.; Roland, Christof E; Roland, Gunther M; Salfeld-Nebgen, Jakob Maxillian Henry; Stephans, George S. F.; Tatar, Kaya; Velicanu, Dragos Alexandru; Wang, J.; Wang, Ta-Wei; Wyslouch, Boleslaw; ... Show more Show less
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Abstract
A search is presented for resonances decaying to a Z boson and a photon. The analysis is based on data from proton-proton collisions at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 35.9 fb[superscript −1], and collected with the CMS detector at the LHC in 2016. Two decay modes of the Z boson are investigated. In the leptonic channels, the Z boson candidates are reconstructed using electron or muon pairs. In the hadronic channels, they are identified using a large-radius jet, containing either light-quark or b quark decay products of the Z boson, via jet substructure and advanced b quark tagging techniques. The results from these channels are combined and interpreted in terms of upper limits on the product of the production cross section and the branching fraction to Zγ for narrow and broad spin-0 resonances with masses between 0.35 and 4.0 TeV, providing thereby the most stringent limits on such resonances. Keywords: Beyond Standard Model, Hadron-Hadron scattering (experiments), Particle and resonance production
Date issued
2018-09
URI
http://hdl.handle.net/1721.1/119158
Department
Massachusetts Institute of Technology. Department of Physics
Journal
Journal of High Energy Physics
Publisher
Springer Nature
Citation
The CMS collaboration, et al. “Search for Zγ Resonances Using Leptonic and Hadronic Final States in Proton-Proton Collisions at √s = 13 TeV.” Journal of High Energy Physics, vol. 2018, no. 9, Sept. 2018. © 2018 The Authors
Version: Final published version
ISSN
1029-8479

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