Measurement of direct photon pair production cross sections in ppbar collisions at sqrt(s)=1.96 TeV

Details Measurement of direct photon pair production cross sections in ppbar collisions at sqrt(s)=1.96 TeV Measurement of direct photon pair production cross sections in ppbar collisions at sqrt(s)=1.96 TeV

2010-02-26

arxiv.org/abs/1002.4917v3

Phys. Lett. B690, 108 (2010)

Physics

High Energy Physics

High Energy Physics - Experiment

11 pages,16 figures, published in physics letters B

Scientific paper

10.1016/j.physletb.2010.05.017

We present a measurement of direct photon pair production cross sections using 4.2 fb-1 of data collected with the D0 detector at the Fermilab Tevatron proton-antiproton Collider. We measure single differential cross sections as a function of the diphoton mass, the transverse momentum of the diphoton system, the azimuthal angle between the photons, and the polar scattering angle of the photons, as well as the double differential cross sections considering the last three kinematic variables in three diphoton mass bins. The results are compared with different perturbative QCD predictions and event generators.

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