Measurement of W-gamma and Z-gamma production in pp collisions at sqrt(s) = 7 TeV

Physics – High Energy Physics – High Energy Physics - Experiment

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

Scientific paper

10.1016/j.physletb.2011.06.034

A measurement of W-gamma and Z-gamma production in proton-proton collisions at sqrt(s) = 7 TeV is presented. Results are based on a data sample recorded by the CMS experiment at the LHC, corresponding to an integrated luminosity of 36 inverse picobarns. The electron and muon decay channels of the W and Z are used. The total cross sections are measured for photon transverse energy >10 GeV and spatial separation from charged leptons in the plane of pseudorapidity and azimuthal angle >0.7, and with an additional dilepton invariant mass requirement of > 50 GeV for the Z-gamma process. The following cross section times branching fraction values are found: sigma(pp to W-gamma+X) B(W to lepton neutrino) = 56.3 +/- 5.0 (stat.) +/- 5.0 (syst.) +/- 2.3 (lumi.) pb and sigma(pp to Z-gamma+X) B}(Z to lepton lepton) = 9.4 +/- 1.0 (stat.) +/- 0.6 (syst.) +/- 0.4 (lumi.) pb. These measurements are in agreement with standard model predictions. The first limits on anomalous WW gamma, ZZ gamma, and Z gamma gamma trilinear gauge couplings at sqrt(s) = 7 TeV are set.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Measurement of W-gamma and Z-gamma production in pp collisions at sqrt(s) = 7 TeV does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Measurement of W-gamma and Z-gamma production in pp collisions at sqrt(s) = 7 TeV, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Measurement of W-gamma and Z-gamma production in pp collisions at sqrt(s) = 7 TeV will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-27790

All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.