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Measurement of the $Zγ → ν\overline{ν}γ$ production cross section in pp collisions at $\sqrt{s}$ = 8 TeV and limits on anomalous ZZγ and Zγγ trilinear gauge boson couplings


CMS Collaboration; Canelli, F; Chiochia, V; Kilminster, B; Robmann, P; et al (2016). Measurement of the $Zγ → ν\overline{ν}γ$ production cross section in pp collisions at $\sqrt{s}$ = 8 TeV and limits on anomalous ZZγ and Zγγ trilinear gauge boson couplings. Physics Letters B, 760:448-468.

Abstract

An inclusive measurement of the $Zγ → ν\overline{ν}γ$ production cross section in pp collisions at $\sqrt{s}$=8TeV is presented, using data corresponding to an integrated luminosity of 19.6 fb$^{−1}$ collected with the CMS detector at the LHC. This measurement is based on the observation of events with large missing energy and with a single photon with transverse momentum above 145 GeV and absolute pseudorapidity in the range |η|<1.44 . The measured Zγ→νν‾γ production cross section, 52.7±2.1 (stat)±6.4 (syst)±1.4 (lumi) fb , agrees well with the standard model prediction of 50.0−2.2+2.4 fb . A study of the photon transverse momentum spectrum yields the most stringent limits to date on the anomalous ZZγ and Zγγ trilinear gauge boson couplings.

Abstract

An inclusive measurement of the $Zγ → ν\overline{ν}γ$ production cross section in pp collisions at $\sqrt{s}$=8TeV is presented, using data corresponding to an integrated luminosity of 19.6 fb$^{−1}$ collected with the CMS detector at the LHC. This measurement is based on the observation of events with large missing energy and with a single photon with transverse momentum above 145 GeV and absolute pseudorapidity in the range |η|<1.44 . The measured Zγ→νν‾γ production cross section, 52.7±2.1 (stat)±6.4 (syst)±1.4 (lumi) fb , agrees well with the standard model prediction of 50.0−2.2+2.4 fb . A study of the photon transverse momentum spectrum yields the most stringent limits to date on the anomalous ZZγ and Zγγ trilinear gauge boson couplings.

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Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Language:English
Date:2016
Deposited On:10 Jan 2017 11:30
Last Modified:02 Feb 2018 11:18
Publisher:Elsevier
ISSN:0370-2693
OA Status:Gold
Free access at:Publisher DOI. An embargo period may apply.
Publisher DOI:https://doi.org/10.1016/j.physletb.2016.06.080

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