Collimation of average multiplicity in QCD jets
High Energy Physics - Phenomenology
2010-01-26 v1 High Energy Physics - Experiment
Nuclear Theory
Abstract
The collimation of average multiplicity inside quark and gluon jets is investigated in perturbative QCD in the modified leading logarithmic approximation (MLLA). The role of higher order corrections accounting for energy conservation and the running of the coupling constant leads to smaller multiplicity collimation as compared to leading logarithmic approximation (LLA) results. The collimation of jets produced in heavy-ion collisions has also been explored by using medium-modified splitting functions enhanced in the infrared sector. As compared to elementary collisions, the angular distribution of the jet multiplicity is found to broaden in QCD media at all energy scales.
Cite
@article{arxiv.0910.3791,
title = {Collimation of average multiplicity in QCD jets},
author = {Francois Arleo and Redamy Perez Ramos},
journal= {arXiv preprint arXiv:0910.3791},
year = {2010}
}
Comments
10 pages, 2 figures