# Measurement of the Z gamma to nu nu-bar gamma production cross section in pp collisions at sqrt(s) = 8 TeV and limits on anomalous Z-Z-gamma and Z-gamma-gamma trilinear gauge boson couplings

Abstract : A measurement of the Z gamma to nu nu-bar gamma production cross section in pp collisions at sqrt(s) = 8 TeV is presented, using data corresponding to an integrated luminosity of 19.6 inverse-femtobarns 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 |eta| < 1.44. The measured Z gamma to nu nu-bar gamma 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+2.4-2.2 fb. A study of the photon transverse momentum spectrum yields the most stringent limits to date on the anomalous Z-Z-gamma and Z-gamma-gamma trilinear gauge boson couplings.
Type de document :
Article dans une revue
Physics Letters B, Elsevier, 2016, 760, pp.448-468. 〈10.1016/j.physletb.2016.06.080〉

http://hal.in2p3.fr/in2p3-01278250
Contributeur : Sylvie Flores <>
Soumis le : mercredi 24 février 2016 - 07:11:22
Dernière modification le : jeudi 10 mai 2018 - 02:00:27

### Citation

V. Khachatryan, M. Besançon, F. Couderc, M. Dejardin, D. Denegri, et al.. Measurement of the Z gamma to nu nu-bar gamma production cross section in pp collisions at sqrt(s) = 8 TeV and limits on anomalous Z-Z-gamma and Z-gamma-gamma trilinear gauge boson couplings. Physics Letters B, Elsevier, 2016, 760, pp.448-468. 〈10.1016/j.physletb.2016.06.080〉. 〈in2p3-01278250〉

### Métriques

Consultations de la notice