Direct-photon plus away-side jet production inpp collisions at $$\sqrt s = 63$$ GeV and a determination of the gluon distribution

T P A Åkesson ,G Thorstenson,I Dahl-Jensen,I Mannelli,A Vanjashin,D Lissauer,P Dam,S Mayburov,S Almehed,J W Hiddleston,A Rudge,M Winik,N Starinsky,A A Carter,P Nevsky,E Vella,B Callen,S Katsanevas,Y Choi,G Damgaard,S Eidelman,K Kulka,G Piskounov,A Kalinovsky,R Kroeger,J R Carter,L K Resvanis,I Stumer,N A Mccubbin,S Dagan,Y Goloubkov,V Chernyatin,O Benary ,V Hedberg ,B S Nielsen ,H J Specht ,R Carosi ,U Goerlach ,W Cleland ,B A Dolgoshein ,P Ioannou ,Klavs Hansen ,Hans Henrik Thodberg ,V Sidorov ,V A Kantserov ,W Molzon ,D Rahm ,P Cecil ,W Willis ,M W Evans ,Richard Batley ,Α Μάρκου ,M Albrow ,U Mjörnmark ,H Bøggild ,Volker Burkert ,R Møller ,C Fabjan ,H A Gordon ,J Williamson ,L Olsen ,J Schukraft ,G Jarlskog ,E Anassontzis ,B Lörstad ,J Thompson ,T Jensen ,E Dahl‐Jensen ,Y Oren ,H Breuker ,A Shmeleva ,S Yu Smirnov ,O Botner ,I L Gavrilenko ,C Kourkoumelis ,M K Sullivan ,C Woody

doi:10.1007/bf01548810

Direct-photon plus away-side jet production inpp collisions at $$\sqrt s = 63$$ GeV and a determination of the gluon distribution

T P A Åkesson , G Thorstenson + Show 75 more

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https://doi.org/10.1007/bf01548810

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Journal: Zeitschrift für Physik C: Particles and Fields	Publication Date: Sep 1, 1987
Citations: 15

Affiliation: European Organization for Nuclear Research, Lund University, University of Copenhagen, Tel Aviv University, Rutherford Appleton Laboratory, Brookhaven National Laboratory, Queen Mary University of London, University of Pennsylvania, University of Pittsburgh, University of Cambridge, National and Kapodistrian University of Athens, Heidelberg University, University of Bonn

#CERN Intersecting Storage Rings #Inpp Collisions + Show 8 more

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Abstract

We have determined the double inclusive cross-section for opposite-side high-p T photons and away-side jets withθ γ ≈θjet≈90° produced inpp collisions at the CERN Intersecting Storage Rings at$\sqrt s = 63$ GeV. Under the assumption that these events arise predominantly from the QCD gluon Compton process we have calculated the gluon structure function in the range 0.15≦x≦0.30 at an average square of the four-momentum transfer of 40 GeV2/c2. The data favour a soft gluon distribution in the proton.

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