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Séminaires et colloques
Andre Hoang, On the weight of the heaviest known elementary particle
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Europe/Paris
Description
The mass and the other properties of the top quark are important since they might tell us about
the currently unknown mechanism of spontaneous symmetry breaking. In particular, precise
measurements of the top quark mass are a crucial ingredient for indirect searches for the mechanism of
spontaneous symmetry breaking and other aspects of new physics.
Although measurements of the top quark mass have reached an impressive precision of about 1 GeV,
it is still unknown (!) what kind of top quark mass the experiments have measured.
In the talk I explain the theoretical and experimental issues that lead to this conclusion and explain how
the problem can be resolved by new theoretical developments that allow to prove novel kinds of
QCD factorization theorems.
