Enhanced nonperturbative effects in jet distributions
Abstract
We consider the triple differential distribution d\Gamma/(dE_J)(dm_J^2)(d\Omega_J) for two-jet events at center of mass energy M, smeared over the endpoint region m_J^2 << M^2, |2 E_J -M| ~ \Delta, \lqcd << \Delta << M. The leading nonperturbative correction, suppressed by \lqcd/\Delta, is given by the matrix element of a single operator. A similar analysis is performed for three jet events, and the generalization to any number of jets is discussed. At order \lqcd/\Delta, non-perturbative effects in four or more jet events are completely determined in terms of two matrix elements which can be measured in two and three jet events.
Keywords
Cite
@article{arxiv.hep-ph/0212255,
title = {Enhanced nonperturbative effects in jet distributions},
author = {Christian W. Bauer and Aneesh V. Manohar and Mark B. Wise},
journal= {arXiv preprint arXiv:hep-ph/0212255},
year = {2009}
}
Comments
Significant changes made. The first moment does not vanish--the paper has been modified to reflect this. Relations between different numbers of jets still hold