Heavy-Quark Correlations in Direct Photon-Photon Collisions

Abstract

In two-photon collisions at LEP2 and a future $e^{+}{e}^{-}$ linear collider heavy quarks (mainly charm) will be pair-produced rather copiously. The production via direct and resolved photons can be distinguished experimentally via a remnant-jet tag. We study correlations of the heavy quarks at next-to-leading order in QCD in the direct channel, which is free from phenomenological parton densities in the photon. These correlations are therefore directly calculable in perturbative QCD and provide a stringent test of the production mechanism.

10 pages, LaTeX, epsfig, 5 figures appended as uuencoded file (hardcopy can be obtained upon request from [email protected] or [email protected])

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Cited by in corpus (9)

• Theory of hard photoproduction
• Charm quark and D^* cross sections in deeply inelastic scattering at DESY HERA
• Next-to-Leading Order Cross Sections for Tagged Reactions
• D* Production in Two-Photon Collisions
• Heavy-Quark Production in $e\gamma$ Scattering
• Double -- photon exclusive processes with heavy quark -- heavy antiquark pairs in high-energy Pb-Pb collisions at LHC
• Heavy Flavour Production in Two-Photon Collisions
• Towards understanding $b\bar{b}$ production in $\gamma \gamma$ collisions
• Fully differential heavy quark contributions to the photon structure functions $F_2^{\gamma }(x,Q^2)$ and $F_L^{\gamma }(x,Q^2)$ at next-to-leading order QCD