INVESTIGADORES
MONTICELLI Fernando Gabriel
artículos
Título:
Measurement of Wgamma and Zgamma production in proton-proton collisions at √s =7 TeV with the ATLAS Detector
Autor/es:
ATLAS COLLABORATION, G. AAD, F. MONTICELLI, ET AL
Revista:
JOURNAL OF HIGH ENERGY PHYSICS
Editorial:
SPRINGER
Referencias:
Lugar: Berlin; Año: 2011 p. 1 - 23
ISSN:
1126-6708
Resumen:
We present studies of W and Z bosons with associated
high energy photons produced in pp collisions at sqrt(s)=7 TeV. The
analysis uses 35 pb-1 of data collected by the ATLAS experiment in 2010.
The event selection requires W and Z bosons decaying into high pT
leptons (electrons or muons) and a photon with ET>15 GeV separated
from the lepton(s) by a distance Delta_R(l,gamma)>0.7 in eta-phi
space. A total of 95 (97) pp->e nu gamma + X (pp->mu nu gamma + X)
and 25 (23) pp->e+ e- gamma + X (pp->mu+ mu- gamma + X) event
candidates are selected. The kinematic distributions of the leptons and
photons and the production cross sections are measured. The data are
found to agree with Standard Model predictions that include
next-to-leading-order O(alpha alpha_s) contributions.