Download or read book Diphoton Production in P[bar P] Collisions At[radical] written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We present measurements of the inclusive[gamma][gamma] cross section (as a function of invariant mass and photon[epsilon][sub[tau]]), in p[bar p] collisions at[radical]s= 1.8 TeV, made using the D0 detector at the Fermilab Tevatron collider. The next is leading order (NLO) QCD prediction is found to be in good agreement with the data. The effects of invariant mass and diphoton balance cuts, which test the next-to-leading order contributions to the cross section, are investigated. We also compare the distribution of[kappa][sub[tau]] between samples of diphotons and highly electromagnetic jets, and find that the NLO QCD prediction models the shape of the[gamma][gamma][kappa][sub[tau]] distribution quite well.