4,385 research outputs found
Higher-Order QCD Corrections in Prompt Photon Production
We exhibit a method for simultaneously treating recoil and threshold
corrections in single-photon inclusive cross sections, working within the
formalism of collinear factorization. This approach conserves both the energy
and transverse momentum of resummed radiation. At moderate p_T, we find the
potential for substantial enhancements from higher-order perturbative and
power-law nonperturbative corrections.Comment: 9 Pages, LaTeX, two figures as eps file
Current Issues in Prompt Photon Production
We give a brief account of recent theoretical developments in prompt photon
production.Comment: Contribution to the proceedings of the ``8th International Workshop
on Deep-Inelastic Scattering'' (DIS2000), April 2000, Liverpool, UK; 7 Pages,
LaTeX, three figures as eps file
Power corrections in eikonal cross sections
We discuss power corrections associated with the infrared behavior of the
perturbative running coupling in the eikonal approximation to Drell-Yan and
other annihilation cross sections in hadron-hadron scattering. General
properties of the eikonal approximation imply that only even powers of the
energy scale are necessary.Comment: 4 pages, LaTeX. Contributed to 30th International Conference on
High-Energy Physics (ICHEP 2000), Osaka, Japan, 27 Jul - 2 Aug 200
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