Angular distribution of thrust axis with power-suppressed contribution in e+e- annihilation
High Energy Physics - Phenomenology
2010-10-28 v1
Abstract
Structure function of e+e- to hadrons cross section proportional to the longitudinal part of the hadron tensor is power suppressed with respect to an event shape variable in the two-jet region. In the SCET framework, we study the event shape distribution for this structure function to NLL level of accuracy. As, a result we obtain the angular distribution of hadron jets as a function of the thrust, in the two jet region. We further examine effects of non-perturbative hadronization corrections by adopting a shape function that reproduce the observed event shape distributions. Impacts of our findings on the electroweak measurements via the jet angular forward-backward asymmetry are discussed.
Keywords
Cite
@article{arxiv.1006.5330,
title = {Angular distribution of thrust axis with power-suppressed contribution in e+e- annihilation},
author = {Kaoru Hagiwara and Grigory Kirilin},
journal= {arXiv preprint arXiv:1006.5330},
year = {2010}
}
Comments
28 pages, 9 figures