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hep-ph2009
The R-evolution of QCD matrix elements
Andre H. Hoang, Ambar Jain, Ignazio Scimemi +1
Perturbation series in QCD are generally asymptotic and suffer from so-called infrared renormalon ambiguities. In the context of the standard operator product expansion in MS-bar t…
hep-ph2008
The top quark jet-function at two loops
Ambar Jain, Ignazio Scimemi, Iain W. Stewart
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…