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Title: 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 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$$MSR\atop{t,1 GeV}$$.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [2] ;  [5]
  1. Univ. of Hamburg (Germany). Inst. for Theoretical Physics
  2. Univ. of Vienna (Austria). Faculty of Physics
  3. Univ. of Vienna (Austria). Faculty of Physics and Erwin Schrödinger International Inst. for Mathematical Physics
  4. Univ. Autonoma de Madrid (Spain). Dept. de Fisica Teorica
  5. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Center for Theoretical Physics
Publication Date:
Grant/Contract Number:
SC0011090; 327942
Type:
Publisher's Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Name: Physical Review Letters Journal Volume: 117 Journal Issue: 23; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Sponsoring Org:
USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR) (SC-21); Austrian Science Fund (FWF); Ministry of Economy, Industry and Competitiveness (MINECO); Simons Foundation; Erwin Schrödinger International Inst. for Mathematical Physics (ESI), Wien (Austria); Univ. of Vienna (Austria)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
OSTI Identifier:
1333769