High-energy resummation at the LHC: the case of Drell-Yan processes
Abstract
We first review the general framework which enables one to resum high-energy logarithms in hadronic processes, both in the evolution of parton densities and in the coefficient functions. We then present an all-order calculation in perturbative QCD of the inclusive Drell Yan and vector boson production in hadron-hadron collisions, in the limit where centre of mass energy is much bigger than the invariant mass of the final state. Our calculation resums leading non-trivial logarithms in the ratio of these two scales. We also study the phenomenological relevance of the high-energy corrections for Drell-Yan processes at the LHC. We find that the resummation corrects the NNLO result by a few percent, for values of the invariant mass of the lepton pair below 100 GeV. Corrections to W, Z production are expected to be of the same order.
Keywords
Cite
@article{arxiv.1006.2314,
title = {High-energy resummation at the LHC: the case of Drell-Yan processes},
author = {Simone Marzani},
journal= {arXiv preprint arXiv:1006.2314},
year = {2010}
}
Comments
5 pages, Talk given at 10th DESY Workshop on Elementary Particle Theory: Loops and Legs 2010, Worlitz, Germany 25-30 April 2010