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arXiv · 0802.4173

The top quark jet-function at two loops

Ambar Jain·Ignazio Scimemi·Iain W. Stewart
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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.

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Ambar Jain, Ignazio Scimemi, Iain W. Stewart. 2008-02-28. The top quark jet-function at two loops. https://arxiv.org/abs/0802.4173

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