
Abstract
We present the first measurements of the differential cross section dσ/dpγ T for the production of an isolated photon in association with at least two b-quark jets. The measurements consider photons with rapidities |yγ | < 1.0 and transverse momenta 30 < pγT < 200 GeV. The b-quark jets are required to have pjetT > 15 GeVand |yjet| < 1.5. The ratio of differential production cross sections for γ + 2 b-jets to γ +b-jet as a function of pγT is also presented. The results are based on the proton–antiproton collision data at √s = 1.96 TeVcollected with the D0 detector at the Fermilab Tevatron Collider. The measured cross sections and their ratios are compared to the next-to-leading order perturbative QCD calculations as well as predictions based on the kT-factorization approach and those from the sherpa and pythia Monte Carlo event generators.
Item Type: | Journal article |
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Form of publication: | Publisher's Version |
Faculties: | Physics |
Subjects: | 500 Science > 530 Physics |
URN: | urn:nbn:de:bvb:19-epub-24255-6 |
ISSN: | 0370-2693 |
Annotation: | SCOAP3-Publikation. - Weitere Autoren siehe PDF-Volltext |
Language: | English |
Item ID: | 24255 |
Date Deposited: | 27. Mar 2015, 08:00 |
Last Modified: | 08. May 2024, 08:25 |