IFLP 13074
INSTITUTO DE FISICA LA PLATA
Unidad Ejecutora - UE
artículos
Título:
Measurement of the inclusive isolated prompt photon cross-section in pp collisions at 7 TeV using 35 pb-1 of ATLAS data
Autor/es:
THE ATLAS COLL. , G. AAD; MARIA TERESA DOVA ET AL.
Revista:
PHYSICS LETTERS B
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Lugar: Amsterdam; Año: 2011 vol. 706 p. 150 - 167
ISSN:
0370-2693
Resumen:
A measurement of the di erential cross-section for the inclusive production of isolated prompt photons in pp collisions at a centerof- mass energy 7 TeV is presented. The measurement covers the pseudorapidity ranges jj < 1:37 and 1:52 jj < 2:37 in the transverse energy range 45 ET < 400 GeV. The results are based on an integrated luminosity of 35 pb-1, collected with the ATLAS detector at the LHC. The yields of the signal photons are measured using a data-driven technique, based on the observed distribution of the hadronic energy in a narrow cone around the photon candidate and the photon selection criteria. The results are compared with next-to-leading order perturbative QCD calculations and found to be in good agreement over four orders of magnitude in cross-section.
