出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：Far above threshold the production process e+e− →t ¯t 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-invariantmass 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.
