Measurement of direct photon pair production cross sections in p(p)over-bar collisions at root s=1.96 TeV

0352165 - FZÚ 2011 RIV NL eng J - Journal Article
Abazov, V. M. - Abbott, B. - Abolins, M. - Kupčo, Alexander - Lokajíček, Miloš
Measurement of direct photon pair production cross sections in p(p)over-bar collisions at root s=1.96 TeV.
Physics Letters. B. Roč. 690, č. 2 (2010), s. 108-117. ISSN 0370-2693. E-ISSN 1873-2445
R&D Projects: GA MŠMT LC527; GA MŠMT LA08047
Institutional research plan: CEZ:AV0Z10100502
Keywords : D0 * photon * cross sections * diphoton
Subject RIV: BF - Elementary Particles and High Energy Physics
Impact factor: 5.255, year: 2010
http://arxiv.org/abs/1002.4917

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.
Permanent Link: http://hdl.handle.net/11104/0191742