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Measurements of the $pp \to W\gamma\gamma$ and $pp \to Z\gamma\gamma$ cross sections and limits on anomalous quartic gauge couplings at $\sqrt{s}$ = 8TeV


CMS Collaboration; Canelli, Florencia; Kilminster, Benjamin; Aarestad, Thea; Caminada, Lea; de Cosa, Annapaoloa; Del Burgo, Riccardo; Donato, Silvio; Galloni, Camilla; Hinzmann, Andreas; Hreus, Tomas; Ngadiuba, Jennifer; Pinna, Deborah; Rauco, Giorgia; Robmann, Peter; Salerno, Daniel; Schweiger, Korbinian; Seitz, Claudia; Takahashi, Yuta; Zucchetta, Alberto; et al (2017). Measurements of the $pp \to W\gamma\gamma$ and $pp \to Z\gamma\gamma$ cross sections and limits on anomalous quartic gauge couplings at $\sqrt{s}$ = 8TeV. Journal of High Energy Physics, 10:072.

Abstract

Measurements are presented of $W\gamma\gamma$ and $Z\gamma\gamma$ production in proton-proton collisions. Fiducial cross sections are reported based on a data sample corresponding to an integrated luminosity of 19.4 fb$^{−1}$ collected with the CMS detector at a center-of-mass energy of 8 TeV. Signal is identified through the $W \to \ell$v and $Z \to \ell\ell$ decay modes, where $\ell$ is a muon or an electron. The production of $W\gamma\gamma$ and $Z\gamma\gamma$, measured with significances of 2.6 and 5.9 standard deviations, respectively, is consistent with standard model predictions. In addition, limits on anomalous quartic gauge couplings in $W\gamma\gamma$ production are determined in the context of a dimension-8 effective field theory.

Abstract

Measurements are presented of $W\gamma\gamma$ and $Z\gamma\gamma$ production in proton-proton collisions. Fiducial cross sections are reported based on a data sample corresponding to an integrated luminosity of 19.4 fb$^{−1}$ collected with the CMS detector at a center-of-mass energy of 8 TeV. Signal is identified through the $W \to \ell$v and $Z \to \ell\ell$ decay modes, where $\ell$ is a muon or an electron. The production of $W\gamma\gamma$ and $Z\gamma\gamma$, measured with significances of 2.6 and 5.9 standard deviations, respectively, is consistent with standard model predictions. In addition, limits on anomalous quartic gauge couplings in $W\gamma\gamma$ production are determined in the context of a dimension-8 effective field theory.

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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:2017
Deposited On:08 Feb 2018 16:40
Last Modified:19 Feb 2018 10:46
Publisher:Springer
ISSN:1029-8479
OA Status:Gold
Free access at:Publisher DOI. An embargo period may apply.
Publisher DOI:https://doi.org/10.1007/JHEP10(2017)072

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