Physics
Scientific paper
Mar 2012
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aps..aprx10004l&link_type=abstract
American Physical Society, APS April Meeting 2012, March 31-Apr 3, 2012, abstract #X10.004
Physics
Scientific paper
We describe a study made by the ATLAS collaboration of Wγ and Zγ production from pp collisions at √s = 7 TeV. The analysis is performed on a data sample with an integrated luminosity of 1.0 fb-1 collected during 2011 LHC data taking. The measurement uses W and Z bosons identified from leptonic decays (electrons and muons) with an associated high energy isolated photon. Production cross sections for p+p -> lνγ + X and p+p -> l^+l^-γ + X are measured in a fiducial phase space well covered by the ATLAS detector acceptance and are studied in several ranges of the transverse energy of the photon. The measured cross sections and production kinematics are compared to Standard Model predictions and used to determine limits on anomalous WW^*γ and Z(Z^*/*circ;)γ couplings.
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