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GRK 2044
Physikalisches Institut
Albert-Ludwigs-Universität Freiburg
Hermann-Herder-Str. 3
79104 Freiburg

+49 761 203 5715

Martin Beneke - The ultimate uncertainty of the top quark pole mass

Seminarvortrag im Rahmen des GRK 2044 am 25.01.2017

The top quark mass is now determined with an uncertainty of several hundred MeV from mass reconstruction at hadron colliders, which raises questions of principal nature concerning the concept of the top quark pole mass. In this talk I explain how multi-loop calculations can be matched with knowledge on asymptotic behaviour to derive an all-order perturbative relation, which quantifies the ultimate uncertainty of the top-quark pole mass. I then explain how this limitation can be overcome when one attempts to determine the top quark mass with a precision of 50 MeV from a threshold scan in high-energy e+ e- collisions. 

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