Measurement of the inclusive isolated prompt photon cross-section in pp collisions at root s=7 TeV using 35 pb(-1) of ATLAS data
2011 (English)In: Physics Letters B, ISSN 0370-2693, Vol. 706, no 2-3, 150-167 p.Article in journal (Refereed) Published
A measurement of the differential 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 vertical bar < 1.37 and 1.52 <= vertical bar eta vertical bar < 2.37 in the transverse energy range 45 <= E(T) < 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.
Place, publisher, year, edition, pages
2011. Vol. 706, no 2-3, 150-167 p.
Research subject Physics
IdentifiersURN: urn:nbn:se:su:diva-65784DOI: 10.1016/j.physletb.2011.11.010ISI: 000298338000006OAI: oai:DiVA.org:su-65784DiVA: diva2:464710
FunderSwedish Research CouncilKnut and Alice Wallenberg Foundation
Publikationen har totalt 3022 författare, G. Aad et al.2011-12-132011-12-132012-01-29Bibliographically approved