Particle Multiplicity in Jets and Sub-jets with Jet Axis from Color Current
Abstract
We study the particle multiplicity in a jet or sub-jet as derived from an energy-multiplicity 2-particle correlation. This definition avoids the notion of a globally fixed jet axis and allows for the study of smaller jet cone openings in a more stable way. The results are sensitive to the mean color current in the jet from primary parton which takes into account intermediate partonic processes in the sub-jet production where at high energies. We generalize previous calculations in Leading Logarithmic Approximation (LLA). The size of the effects related to this jet axis definition are computed for multiplicities in sub-jets with different opening angles and energies by including contributions from the Modified LLA (MLLA) and Next-to-MLLA to the leading order QCD results.
Cite
@article{arxiv.0807.1082,
title = {Particle Multiplicity in Jets and Sub-jets with Jet Axis from Color Current},
author = {Wlofgang Ochs and Redamy Perez Ramos},
journal= {arXiv preprint arXiv:0807.1082},
year = {2008}
}