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Measurement of the Zγ → ννγ production cross section in pp collisions at √s = 8 TeV and limits on anomalous ZZγ and Zγ γ trilinear gauge boson couplings
Journal article   Open access   Peer reviewed

Measurement of the Zγ → ννγ production cross section in pp collisions at √s = 8 TeV and limits on anomalous ZZγ and Zγ γ trilinear gauge boson couplings

Vardan Khachatryan, Patrizia Barria, Barbara Clerbaux, Gilles Lentdecker, Giuseppe Fasanella, Laurent Favart, Reza Goldouzian, Anastasia Grebenyuk, Georgia Karapostoli, Thomas Lenzi, …
Physics letters. B, Vol.760, pp.448-468
01/01/2016
DOI: 10.1016/j.physletb.2016.06.080
url
https://doi.org/10.1016/j.physletb.2016.06.080View
Published (Version of record) Open Access

Abstract

An inclusive measurement of the Zγ→νν‾γ production cross section in pp collisions at 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 145GeV 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.
High Energy Physics Experiment Nuclear Experiment Physique des particules élémentaires

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