Measurement of the Zγ production cross section in pp collisions at 8 TeV and search for anomalous triple gauge boson couplings
Journal of High Energy Physics, vol.2015, no.4, 2015 (SCI-Expanded, Scopus)
- Publication Type: Article / Article
- Volume: 2015 Issue: 4
- Publication Date: 2015
- Doi Number: 10.1007/jhep04(2015)164
- Journal Name: Journal of High Energy Physics
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Keywords: Hadron-Hadron Scattering, HADRON COLLIDERS, RECONSTRUCTION, E(+)E(-)
- Open Archive Collection: AVESIS Open Access Collection
- Anadolu University Affiliated: No
Abstract
© 2015, The Author(s).Abstract: The cross section for the production of Zγ in proton-proton collisions at 8 TeV is measured based on data collected by the CMS experiment at the LHC corresponding to an integrated luminosity of 19.5 fb−1. Events with an oppositely-charged pair of muons or electrons together with an isolated photon are selected. The differential cross section as a function of the photon transverse momentum is measured inclusively and exclusively, where the exclusive selection applies a veto on central jets. The observed cross sections are compatible with the expectations of next-to-next-to-leading-order quantum chromodynamics. Limits on anomalous triple gauge couplings of ZZγ and Zγγ are set that improve on previous experimental results obtained with the charged lepton decay modes of the Z boson.[Figure not available: see fulltext.]