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

Abstract

Contributions through second order, $O({\alpha }_s^2)$, 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 ${\alpha }_s^2$. We find important corrections to the lowest order, $O({\alpha }_s)$, subprocess $cg\to \gamma c$. We demonstrate to what extent data from $p+\bar{p}\to \gamma +c+X$ may serve to measure the charm quark density in the nucleon.

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

References in corpus (7)

• Global QCD Analysis and the CTEQ Parton Distributions
• The Two-Jet Differential Cross Section at $\mathcal{O}({\alpha }_s^3)$ in Hadron Collisions
• The Charm Content of W+1 Jet Events as a Probe of the Strange Quark Distribution Function
• Transverse Momentum Distributions for Heavy Quark Pairs
• Breakdown of Conventional Factorization for Isolated Photon Cross Sections
• Production of a Prompt Photon in Association with Charm at Next-to-Leading Order in QCD
• Triply Differential Jet Cross Sections for Hadron Collisions at Order alpha_s^3 in QCD

Cited by in corpus (8)

• Theory of hard photoproduction
• Associated Production of a Z Boson and a Single Heavy-Quark Jet
• Direct Photon Production in Association With A Heavy Quark At Hadron Colliders
• Photon Plus Jet Cross Sections in Deep Inelastic ep Collisions at Order O(alpha^2 alpha_s)
• Production of a Prompt Photon in Association with Charm at Next-to-Leading Order in QCD
• Photon-tagged heavy meson production in high energy nuclear collisions
• Next-to-leading order QCD corrections to spin-dependent hadron-pair photoproduction
• Spin Dependence of Associated Production of a Prompt Photon and a Charm Quark at Next-to-Leading Order in QCD