Measurement of the isolated photon cross section in pp¯ collisions at s=1.96 TeV

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,G Hamel De Monchenault ,G S Muanza ,W M Lee ,R A Sidwell ,R Lipton,R Hauser,F Filthaut,C Galea ,M Narain,G Blazey,N Parashar,V Bhatnagar,S Sumowidagdo,S Choi,A Juste Rozas ,G W Wilson ,V Stolin,C Clément,V White,C Royon,A Schwartzman,G D Alexeev ,D K Cho ,V M Podstavkov ,T Kurča,A P Heinson ,L Duflot,S Cŕéṕe-Renaudin ,M R Adams ,C Hensel,S Calvet,Q Z Li ,K Soustružnı́k ,J Hegeman ,J A Parsons ,D A Stoyanova ,C Autermann,S Kunori,C Johnson,P Mal ,N K Mondal ,A Nomerotski,M E Pol ,V Šimák ,M Begel,W Carvalho,J R Vlimant ,L Mendoza,P W Balm ,S Hagopian,S Anderson,V Gavrilov,J Zhu,B Clément,M Weber,M C Cousinou ,P Gutiérrez ,J M Hauptman ,S Snyder,G R Snow ,C E Gerber ,D Gelé,J M Heinmiller ,Q J Xu ,E J Gallas ,W D Shephard ,R L Mccarthy ,A Santoro,A Kharchilava,E Shabalina,T H Burnett ,R W Moore ,J Yu,R Démina ,P A Love ,J Mitrevski,E Barberis,A Ferapontov ,N Oliveira,B Klima,P A Rapidis ,W M Van Leeuwen ,T Zhao,X Song,J.-L Agram,J Stark,D Tsybychev,G Davies,V N Evdokimov ,E Busato,H 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doi:10.1016/j.physletb.2006.04.048

Abstract

The cross section for the inclusive production of isolated photons has been measured in p p ¯ collisions at s = 1.96 TeV with the DØ detector at the Fermilab Tevatron Collider. The photons span transverse momenta 23 to 300 GeV and have pseudorapidity | η | < 0.9 . The cross section is compared with the results from two next-to-leading order perturbative QCD calculations. The theoretical predictions agree with the measurement within uncertainties.

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