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Measurement of the differential cross sections for isolated direct photon pair production in ppˉ collisions at √s = 1.96 TeV
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SYSNO ASEP 0397660 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Measurement of the differential cross sections for isolated direct photon pair production in ppˉ collisions at √s = 1.96 TeV Author(s) Abazov, V. M. (RU)
Abbott, B. (US)
Acharya, B.S. (IN)
Kupčo, Alexander (FZU-D) RID, ORCID
Lokajíček, Miloš (FZU-D) RID, ORCIDNumber of authors 369 Source Title Physics Letters. B. - : Elsevier - ISSN 0370-2693
Roč. 725, 1-3 (2013), s. 6-14Number of pages 9 s. Language eng - English Country NL - Netherlands Keywords anti-p p ; interaction ; pair production ; photon ; direct production ; mass spectrum ; angular correlation ; two-photon ; D0 ; Fermilab Subject RIV BG - Nuclear, Atomic and Molecular Physics, Colliders R&D Projects LG12006 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Institutional support FZU-D - RVO:68378271 UT WOS 000322606800002 DOI 10.1016/j.physletb.2013.06.036 Annotation We present measurements of direct photon pair production cross sections using 8.5 fb−1 of data collected with the D0 detector at the Fermilab Tevatron ppˉ collider. The results are presented as differential distributions of the photon pair invariant mass dσ/dMγγ, pair transverse momentum dσ/dpγγT, azimuthal angle between the photons dσ/dΔϕγγ, and polar scattering angle in the Collins-Soper frame dσ/d|cosθ*|. Measurements are performed for isolated photons with transverse momenta pγT>18 (17) GeV for the leading (next-to-leading) photon in pT, pseudorapidities |ηγ|<0.9, and a separation in η−ϕ space ΔRγγ>0.4. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2014
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