2,314 research outputs found
Power Corrections in Deep Inelastic Event Shape Variables
Results are presented for the leading power-suppressed (1/Q) contributions to
shape variables in deep inelastic lepton scattering. These are then combined
with available leading order perturbative estimates.Comment: 6 pages,Latex2e, 2 figures. To be published in the proceedings of the
5th International workshop on Deep Inelastic Scattering, Chicago, April 199
Power Corrections in QCD
This article provides a review of progress made in understanding inverse
power law corrections 1/Q^p where Q is the hard scale for a given QCD
observable. Special emphasis is given to comparisons of theory with HERA
results.Comment: 10 pages, 5 figures. Contribution submitted to Ringberg workshop on
HERA physics, Ringberg Castle, June 200
Recent progress in QCD calculations for e^+e^- annihilation and hadron collisions
We provide a brief summary of recent developments in QCD calculations in and
beyond fixed-order perturbation theory, for observables in
annihilation as well as hadron collisions.Comment: 9 pages, invited review talk at the meeting LC 10- "New
physics:complementarities between direct and indirect searches", Frascati,
Nov 30-Dec 3, 201
Power corrections to the differential Drell-Yan cross section
We estimate the power corrections (infrared renormalon contributions) to the
coefficient functions for the differential Drell-Yan cross-section
, where is the mass squared and the rapidity of the
produced lepton pair. We employ the dispersive method based on the analysis of
one-loop Feynman graphs containing a massive gluon.Comment: 11 pages, 1 figure, LaTe
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