Summing logarithms and factorization for massive quark initiated jets and the Pythia top quark mass
Sep 13, 2016
8 pages
Published in:
- PoS LL2016 (2016) 066
Contribution to:
- , 066
- LL2016
- Published: Sep 13, 2016 by SISSA
DOI:
Citations per year
0 Citations
Abstract:
The most precise top quark mass measurements use kinematic reconstruction methods, determining the top mass parameter of a Monte Carlo event generator, mMC t . Due to the complicated interplay of hadronization and parton shower dynamics in Monte Carlo event generators, relating mMC t to field theory masses is a non-trivial task. In this talk we present a calibration procedure to determine this relation using hadron level QCD predictions for 2-Jettiness in ee annihilation, an observable which has kinematic top mass sensitivity and has a close relation to the invariant mass of the particles coming from the top decay. The theoretical ingredients of the QCD prediction are explained. Fitting ee 2-Jettiness calculations at NLL/NNLL order to PYTHIA 8.205, we find that mMC t agrees with the MSR mass at the scale 1 GeV within uncertainties, mMC t ' mMSR t;1GeV, but differs from the pole mass by 900/600MeV- top: mass
- mass: pole
- resummation
- dijet: production
- top: decay
- electron positron: annihilation
- parton: showers
- quark: massive
- Monte Carlo
- PYTHIA
References(28)
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