Threshold Resummation for Slepton-Pair Production at Hadron Colliders
Abstract
We present a first and extensive study of threshold resummation effects for supersymmetric (SUSY) particle production at hadron colliders, focusing on Drell-Yan like slepton-pair and slepton-sneutrino associated production. After confirming the known next-to-leading order (NLO) QCD corrections and generalizing the NLO SUSY-QCD corrections to the case of mixing squarks in the virtual loop contributions, we employ the usual Mellin N-space resummation formalism with the minimal prescription for the inverse Mellin-transform and improve it by resumming 1/N-suppressed and a class of N-independent universal contributions. Numerically, our results increase the theoretical cross sections by 5 to 15% with respect to the NLO predictions and stabilize them by reducing the scale dependence from up to 20% at NLO to less than 10% with threshold resummation.
Cite
@article{arxiv.hep-ph/0701202,
title = {Threshold Resummation for Slepton-Pair Production at Hadron Colliders},
author = {G. Bozzi and B. Fuks and M. Klasen},
journal= {arXiv preprint arXiv:hep-ph/0701202},
year = {2008}
}
Comments
20 pages, 11 figures. Wording of several paragraphs improved, some typos corrected, version accepted by Nucl. Phys. B