A measurement of the cross section for the inclusive production of isolated prompt photons in pp collisions at a center-of-mass energy s 1???4 7 TeV is presented. The measurement covers the pseudor- apidity ranges jj < 1:37 and 1:52 jj < 1:81 in the transverse energy range 15 ET < 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.
Measurement of the inclusive isolated prompt photon cross section in pp collisions at sqrt[s]=7??????TeV with the ATLAS detector / Aad, G; Aloisio, Alberto; Alviggi, Mariagrazia; Canale, Vincenzo; Cevenini, Francesco; Chiefari, Giovanni; DELLA VOLPE, Domenico; Merola, Leonardo; Patricelli, Sergio; Conventi, F.; DELLA PIETRA, Massimo; Giordano, Raffaele; Musto, E.; Rossi, E.; Sanchez, A.; Carlino, G.; de Asmundis, R.; Doria, A.; Iengo, P.; Izzo, V.; Sekhniaidze, G.. - In: PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY. - ISSN 1550-7998. - 83:(2011), pp. 052005-052035. [10.1103/PhysRevD.83.052005]
Measurement of the inclusive isolated prompt photon cross section in pp collisions at sqrt[s]=7??????TeV with the ATLAS detector
ALOISIO, ALBERTO;ALVIGGI, MARIAGRAZIA;CANALE, VINCENZO;CEVENINI, FRANCESCO;CHIEFARI, GIOVANNI;DELLA VOLPE, DOMENICO;MEROLA, LEONARDO;PATRICELLI, SERGIO;DELLA PIETRA, MASSIMO;GIORDANO, RAFFAELE;Rossi E.;
2011
Abstract
A measurement of the cross section for the inclusive production of isolated prompt photons in pp collisions at a center-of-mass energy s 1???4 7 TeV is presented. The measurement covers the pseudor- apidity ranges jj < 1:37 and 1:52 jj < 1:81 in the transverse energy range 15 ET < 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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
