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Measurements of the pp → WZ inclusive and differential production cross sections and constraints on charged anomalous triple gauge couplings at s √s = 13 TeV

Author(s)
CMS Collaboration; Abercrombie, Daniel Robert; Allen, B.; Azzolini, Virginia; Barbieri, Richard Alexander; Baty, Austin Alan; Bauer, Gerry P; Bi, R.; Brandt, S.; Busza, Wit; Cali, Ivan Amos; D'Alfonso, Mariarosaria; Demiragli, Zeynep; Gomez-Ceballos, Guillelmo; Goncharov, Maxim; Harris, Philip Coleman; Hsu, D.; Hu, M.; Iiyama, Yutaro; Innocenti, Gian Michele; Klute, Markus; Kovalskyi, Dmytro; Lee, Y. -J.; Levin, A.; Luckey Jr, P David; Maier, Benedikt; Marini, Andrea Carlo; McGinn, Christopher Francis; Mironov, Camelia Maria; Narayanan, S.; Niu, Xinmei; Paus, Christoph M. E.; Roland, Christof; Roland, G.; Stephans, George S. F.; Sumorok, Konstanty C; Tatar, K.; Velicanu, Dragos Alexandru; Wang, J; Wang, T.W.; Wyslouch, Boleslaw; Shi, Zhaozhong; ... Show more Show less
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Abstract
The WZ production cross section is measured in proton-proton collisions at a centre-of-mass energy s = 13 TeV using data collected with the CMS detector, corresponding to an integrated luminosity of 35.9 fb -1 . The inclusive cross section is measured to be s tot (pp ? WZ) = 48.09 - 0.96+ 1.00 (stat) - 0.37+ 0.44 (theo) - 2.17+ 2.39 (syst) ± 1.39(lum) pb, resulting in a total uncertainty of -2.78/+2.98 pb. Fiducial cross section and ratios of charge-dependent cross section measurements are provided. Differential cross section measurements are also presented with respect to three variables: the Z boson transverse momentum p T , the leading jet p T , and the M(WZ) variable, defined as the invariant mass of the system composed of the three leptons and the missing transverse momentum. Differential measurements with respect to the W boson p T , separated by charge, are also shown. Results are consistent with standard model predictions, favouring next-to-next-to-leading-order predictions over those at next-to-leading order. Constraints on anomalous triple gauge couplings are derived via a binned maximum likelihood fit to the M(WZ) variable.
Date issued
2019-04
URI
https://hdl.handle.net/1721.1/126722
Department
Massachusetts Institute of Technology. Department of Physics
Journal
Journal of High Energy Physics
Publisher
Springer Science and Business Media LLC
Citation
CMS Collaboration (Sirunyan, A.M. et al.) "Measurements of the pp → WZ inclusive and differential production cross sections and constraints on charged anomalous triple gauge couplings at s √s = 13 TeV." Journal of High Energy Physics 2019 (April 2019): 122 ©2019 Author(s)
Version: Final published version
ISSN
1029-8479

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