Analytic Calculation of Prompt Photon plus Associated Heavy Flavor at Next-to-Leading Order in QCD

Details Analytic Calculation of Prompt Photon plus Associated Heavy Flavor at Next-to-Leading Order in QCD Analytic Calculation of Prompt Photon plus Associated Heavy Flavor at Next-to-Leading Order in QCD

1995-12-18

arxiv.org/abs/hep-ph/9512343v2

Phys.Rev. D54 (1996) 2279-2294

Physics

High Energy Physics

High Energy Physics - Phenomenology

34 pages RevTex plus 9 figures submitted as uuencoded ps files; figures replaced and text revised to include one additional re

Scientific paper

10.1103/PhysRevD.54.2279

Contributions through second order, $O(\alpha ^2_s)$, in perturbative quantum chromodynamics are calculated analytically for inclusive associated production of a prompt photon and a charm quark at large values of transverse momentum in high energy hadron-hadron collisions. Seven partonic subprocesses contribute at order $\alpha^2_s$. We find important corrections to the lowest order, $O(\alpha_s)$, subprocess $c g \rightarrow \gamma c$. We demonstrate to what extent data from $p +\bar{p}\rightarrow \gamma + c + X$ may serve to measure the charm quark density in the nucleon.

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