1,550 research outputs found
The polarized Drell-Yan process at O(\alpha_s)
The results of a recent calculation of the QCD corrections to the polarized
Drell-Yan process are summarized. Some implications for the production of
vector bosons at RHIC are discussed.Comment: 4 pages, LaTeX, 3 figures included, uses aipproc.sty and epsf.tex;
Talk presented at the 5th International Workshop on "Deep Inelastic
Scattering and QCD" (DIS '97), Chicago, Illinois, USA, April 14-18, 199
Two-Loop Jet Physics: Status and Prospects
I review the recent theoretical progress towards the computation of jet
observables at two loops in QCD.Comment: 5 pages, Talk presented at 9th International Workshop on ``Deep
Inelastic Scattering and QCD'' (DIS 2001), April 2001, Bologna, Ital
Progress on two-loop non-propagator integrals
At variance with fully inclusive quantities, which have been computed already
at the two- or three-loop level, most exclusive observables are still known
only at one loop, as further progress was hampered up to very recently by the
greater computational problems encountered in the study of multi-leg amplitudes
beyond one loop. We discuss the progress made lately in the evaluation of
two-loop multi-leg integrals, with particular emphasis on two-loop four-point
functions.Comment: 9 pages, LaTeX, Invited talk at 5th International Symposium on
Radiative Corrections (RADCOR-2000), Carmel CA, USA, 11--15 September, 200
Isolated Photons in Deep Inelastic Scattering
Photon radiation at large transverse momenta at colliders is a detailed probe
of hard interaction dynamics. The isolated photon production cross section in
deep inelastic scattering was measured recently by the ZEUS experiment, and
found to be considerably larger than theoretical predictions obtained with
widely used event generators. To investigate this discrepancy, we perform a
dedicated parton-level calculation of this observable, including contributions
from fragmentation and large-angle radiation. Our results are in good agreement
with all aspects of the experimental measurement.Comment: 4 pages, 3 figure
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