Measurement of the production cross section for $Z\\gamma \\to \\nu\\bar{\\nu}\\gamma$ in pp collisions at $\\sqrt{s} =$ 7 TeV and limits on $ZZ\\gamma$ and $Z\\gamma\\gamma$ triple gauge boson couplings
Journal
JHEP
Journal Volume
10
Pages
164
Date Issued
2013-09
Author(s)
Abstract
A measurement of the Zγ → vv̄γ cross section in pp collisions at √s = 7TeV is presented, using data corresponding to an integrated luminosity of 5.0 fb-1 collected with the CMS detector. This measurement is based on the observation of events with an imbalance of transverse energy in excess of 130 GeV and a single photon in the absolute pseudorapidity range |n| < 1:4 with transverse energy above 145 GeV. The Zγ → vv̄γ production cross section is measured to be 21:1±4:2 (stat:)±4:3 (syst:)±0:5 (lum:) fb, which agrees with the standard model prediction of 21:9±1:1 fb. The results are combined withthe CMS measurement of Zγ production in the ℓ+ℓ-γfinal state (where ℓ is an electron or a muon) to yield the most stringent limits to date on triple gauge boson couplings: |hz < 2:7 × 10-3, |hz < 1:3 × 10-5 for ZZγ and |hγ < 2:9 × 10 -3, |hγ < 1:5 × 10-5 for Zγγ couplings.
SDGs
Type
journal article