The top quark jet-function at two loops
High Energy Physics - Phenomenology
2009-04-14 v1
Abstract
Far above threshold the production process e^+e^-to t t-bar can be analyzed using effective field theories. In this talk we consider the invariant mass distribution of top-jets and report about our computation of the two-loop heavy quark jet-function. This is a key part of a next-to-next-to-leading order analysis, and already allows for a resummation of all large logs which effect the shape of the top-invariant mass distribution at next-to-next-to-leading log order. A top-mass scheme is defined which is suitable for measurements involving jets, and whose anomalous dimension is determined by the cusp-anomalous dimension to all orders in perturbation theory.
Keywords
Cite
@article{arxiv.0802.4173,
title = {The top quark jet-function at two loops},
author = {Ambar Jain and Ignazio Scimemi and Iain W. Stewart},
journal= {arXiv preprint arXiv:0802.4173},
year = {2009}
}
Comments
Talk presented at RADCOR07, October 1-5 2007, Florence, Italy