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

Abstract

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.

11 pages,16 figures, published in physics letters B

References in corpus (10)

• PYTHIA 6.4 Physics and Manual
• The Upgraded D0 Detector
• Global analysis of fragmentation functions for pions and kaons and their uncertainties
• Global Analysis of Fragmentation Functions for Protons and Charged Hadrons
• Design and Implementation of the New D0 Level-1 Calorimeter Trigger
• Calculation of prompt diphoton production cross sections at Tevatron and LHC energies
• Diphoton signals in theories with large extra dimensions to NLO QCD at hadron colliders
• Search for resonant diphoton production with the D0 detector
• Search for Supersymmetry in Di-Photon Final States at sqrt{s} = 1.96 TeV
• Zgamma production and limits on anomalous ZZgamma and Zgammagamma couplings in ppbar collisions at sqrt(s) = 1.96 TeV

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• Search for Randall-Sundrum Gravitons in the Diphoton Channel at CDF
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• Master Integrals for Electroweak corrections to $gg\to \gamma \gamma$ -- Light quark contributions
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• Search for pair-produced higgsinos decaying via Higgs or $Z$ bosons to final states containing a pair of photons and a pair of $b$-jets with the ATLAS detector
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