Next to leading order bremsstrahlung contribution to prompt-photon production

We calculate, to the next to leading order, the bremsstrahlung contribution to the inclusive prompt-photon cross section in hadron-hadron collisions. We discuss the possible inputs for the parton-into-photon fragmentation functions, as well as the fragmentation scale depedence of the full inclusive...

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Bibliographic Details
Published inNuclear physics. B Vol. 399; no. 1; pp. 34 - 62
Main Authors Aurenche, P., Chiappetta, P., Fontannaz, M., Guillet, J.Ph, Pilon, E.
Format Journal Article
LanguageEnglish
Published Amsterdam Elsevier B.V 28.06.1993
Elsevier
Subjects
Exact sciences and technology
Physics
Quantum chromodynamics
Specific theories and interaction models; particle systematics
The physics of elementary particles and fields
Quantum chromodynamic
Moment
Quark
Cross section (collision)
Particle creation
Photon
Fragmentation
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Summary:We calculate, to the next to leading order, the bremsstrahlung contribution to the inclusive prompt-photon cross section in hadron-hadron collisions. We discuss the possible inputs for the parton-into-photon fragmentation functions, as well as the fragmentation scale depedence of the full inclusive next to leading order prediction. The effect of these corrections is shown to be quite significant in the small- x trange, x t ∼ O(10 −2) at collider energies, and the importance of the gluon into photon fragmentation process is stressed.
ISSN:0550-3213
1873-1562
DOI:10.1016/0550-3213(93)90615-V