Top Quark Mass Calibration for Monte Carlo Event Generators
The most precise top quark mass measurements use kinematic reconstruction methods, determining the top mass parameter of a Monte Carlo event generator m$MC\atop{t}$. Because of hadronization and parton-shower dynamics, relating m$MC\atop{t}$ to a field theory mass is difficult. Here, we present a ca...
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| Veröffentlicht in: | Physical review letters 2016-11, Vol.117 (23) |
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| container_title | Physical review letters |
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| creator | Butenschoen, Mathias Dehnadi, Bahman Hoang, André H. Mateu, Vicent Preisser, Moritz Stewart, Iain W. |
| description | The most precise top quark mass measurements use kinematic reconstruction methods, determining the top mass parameter of a Monte Carlo event generator m$MC\atop{t}$. Because of hadronization and parton-shower dynamics, relating m$MC\atop{t}$ to a field theory mass is difficult. Here, we present a calibration procedure to determine this relation using hadron level QCD predictions for observables with kinematic mass sensitivity. Fitting e+e-2-jettiness calculations at next-to-leading-logarithmic and next-to-next-to-leading-logarithmic order to PYTHIA 8.205, m$MC\atop{t}$ differs from the pole mass by 900 and 600 MeV, respectively, and agrees with the MSR mass within uncertainties, m$MC\atop{t}$ ≃ m$MSR\atop{t,1 GeV}$. |
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Because of hadronization and parton-shower dynamics, relating m$MC\atop{t}$ to a field theory mass is difficult. Here, we present a calibration procedure to determine this relation using hadron level QCD predictions for observables with kinematic mass sensitivity. 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| ispartof | Physical review letters, 2016-11, Vol.117 (23) |
| issn | 0031-9007 1079-7114 |
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| source | American Physical Society Journals |
| subjects | CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS Heavy quark effective theory mass Perturbative QCD Quark & gluon jets Resummation methods Top Quark |
| title | Top Quark Mass Calibration for Monte Carlo Event Generators |
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