einladung - Fakultät für Physik

Fakultät für Physik
DER UNIVERSITÄT WIEN
Arbeitsbereich Teilchenphysik
A-1090 WIEN, BOLTZMANNGASSE 5, AUSTRIA
EINLADUNG
im Rahmen des Teilchenphysikseminars
zum Vortrag
von
Moritz Preißer
(Uni Wien)
über
“Top Quark Mass Calibration for Monte-Carlo
Event Generators“
Abstract:
The lack of knowledge how the top quark mass parameter in Monte-Carlo event
generators (MCs) is related to field theoretically defined mass schemes limits the
theoretical interpretation of very precise top quark mass determinations at hadron
colliders which are based on direct reconstruction. After reviewing the conceptual
problems I will describe a method to calibrate the measured top quark MC mass
parameter by fits of MC hadron level predictions for observables with very strong
mass sensitivity to corresponding hadron level QCD predictions. Subsequently
I will demonstrate the approach for 2-jettiness in e+e- annihilation and show the
calibration results for m_t^MC in Pythia 8.205 for the MSR mass at the scale 1 GeV
and the pole mass at NNLL+NLO accuracy.
Zeit: Dienstag, 11. Oktober 2016, 16:15
Ort: Erwin Schrödinger-Hörsaal, Boltzmanngasse 5, 5. Stock
gez.: A. Hoang, H. Neufeld

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