20–27 juil. 2011
Alpes Congrès - Alpexpo
Fuseau horaire Europe/Paris

Measurement of W gamma and Z gamma production at the LHC

22 juil. 2011, 17:30
15m
Stendhal (Alpes Congrès - Alpexpo)

Stendhal

Alpes Congrès - Alpexpo

Parallel session talk Top and Electroweak Physics Top and Electroweak Physics

Orateur

Song-Ming Wang

Description

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.

Auteur principal

Dr Antonio Baroncelli (INFN / Roma TRE)

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