Jul 20 – 27, 2011
Alpes Congrès - Alpexpo
Europe/Paris timezone

Measurement of W gamma and Z gamma production at the LHC

Jul 22, 2011, 5:30 PM
Stendhal (Alpes Congrès - Alpexpo)


Alpes Congrès - Alpexpo

Parallel session talk Top and Electroweak Physics Top and Electroweak Physics


Song-Ming Wang


Measurements are presented of high energy photons produced in association with W and Z bosons in pp collisions at √s = 7 TeV using the ATLAS detector. The analysis uses W and Z bosons selected with leptonic (e/µ) decays. Subsets of these events are identified by demanding an electromagnetic object passing isolated photon selection criteria. We isolate signals of p + p → l + ν + γ + X and p + p → l + l + γ + X production with photon ET > 15 GeV and delatR(l -γ ) > 0.7. The production cross sections and the kinematic distributions of the leptons and photons are compared to Standard Model predictions. The measurements are sensitive to the electroweak triple gauge couplings of the Standard Model, and constraints are set on anomalous TGCs.

Primary author

Dr Antonio Baroncelli (INFN / Roma TRE)

Presentation materials