Measuring the running top-quark mass
arXiv:0906.5273 · doi:10.1103/PhysRevD.80.054009
Abstract
We present the first direct determination of the running top-quark mass based on the total cross section of top-quark pair-production as measured at the Tevatron. Our theory prediction for the cross section includes various next-to-next-to-leading order QCD contributions, in particular all logarithmically enhanced terms near threshold, the Coulomb corrections at two loops and all explicitly scale dependent terms at NNLO accuracy. The result allows for an exact and independent variation of the renormalization and factorization scales. For Tevatron and LHC we study its dependence on all scales, on the parton luminosity and on the top-quark mass using both the conventional pole mass definition as well as the running mass in the MSbar scheme. We extract for the top-quark an MSbar mass of m(mu=m) = 160.0 +3.3 -3.2 GeV, which corresponds to a pole mass of m_t = 168.9 +3.5 -3.4 GeV.
22 pages, 10 figures, 5 tables, final version to appear in PRD
References in corpus (13)
- Implications of CTEQ global analysis for collider observables
- Theoretical status and prospects for top-quark pair production at hadron colliders
- NLO QCD corrections to t tbar + jet production at hadron colliders
- The theoretical top quark cross section at the Tevatron and the LHC
- Non-perturbative QCD Effects and the Top Mass at the Tevatron
- Tops from Light Quarks: Full Mass Dependence at Two-Loops in QCD
- Infrared Renormalization Group Flow for Heavy Quark Masses
- On next-to-eikonal corrections to threshold resummation for the Drell-Yan and DIS cross sections
- Heavy-quark production in massless quark scattering at two loops in QCD
- Heavy-quark pair production at two loops in QCD
- Weak interaction corrections to hadronic top quark pair production: contributions from quark-gluon and induced reactions
- Next-to-next-to-leading order results for heavy quark pair production in quark--antiquark collisions: The one-loop squared contributions
- Study of b-quark mass effects in multijet topologies with the DELPHI detector at LEP