6533b7cffe1ef96bd1258adf
RESEARCH PRODUCT
Measurement of the inclusive isolated prompt photon cross section in pp collisions at sqrt(s) = 7 TeV with the ATLAS detector
Atlas CollaborationVasiliki MitsouAntonio Ferrer SoriaJuan Antonio Valls FerrerMaría Victoria Castillo GiménezSusana Cabrera UrbánJuan A. Fuster VerdúLuca FioriniEduardo Ros MartínezYesenia Hernández JiménezCarlos Lacasta LlácerEmilio Higón RodríguezJosé Salt CairolsSantiago González De La HozCarmen García GarcíaSalvador Martí GarcíaMiguel Villaplana PérezVicente Lacuesta Miquelsubject
High Energy Physics::ExperimentFísica nuclearNuclear Experimentdescription
A measurement of the cross section for the inclusive production of isolated prompt photons in pp collisions at a center-of-mass energy root s = 7 TeV is presented. The measurement covers the pseudorapidity ranges vertical bar eta(gamma)vertical bar < 1: 37 and 1: 52 <= vertical bar eta(gamma)vertical bar < 1: 81 in the transverse energy range 15 <= E-T(gamma) < 100 GeV. The results are based on an integrated luminosity of 880 nb(-1), collected with the ATLAS detector at the Large Hadron Collider. Photon candidates are identified by combining information from the calorimeters and from the inner tracker. Residual background in the selected sample is estimated from data based on the observed distribution of the transverse isolation energy in a narrow cone around the photon candidate. The results are compared to predictions from next-to-leading-order perturbative QCD calculations.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2011-01-01 |