Measuring the running top-quark mass
By U. Langenfeld, Sven-Olaf Moch, Peter Uwer. 2009
256 citations recorded by the source corpus.
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 next-to-next-to-leading order 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 $\overline{\mathrm{MS}}$ scheme. We extract for the top quark an $\overline{\mathrm{MS}}$ mass of $m(\ensuremath{\mu}=m)={160.0}_{\ensuremath{-}3.2}^{+3.3}\text{ }\text{ }\mathrm{GeV}$, which corresponds to a pole mass of ${m}_{t}={168.9}_{\ensuremath{-}3.4}^{+3.5}\text{ }\text{ }\mathrm{GeV}$.
Subfields: Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/e4f44dbb300494a7ca0d4268c76684a14c3a2a0d
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In Nuclear and High Energy Physics
- Atlas Collaboration
- Cms Collaboration
- S. Höche
- F. Krauss
- M. Schönherr
- Steffen Schumann
- Juan Rojo
- F. Siegert
Citations in the corpus
- Constraints on the gluon PDF from top quark pair production at hadron colliders (2013, methodology): “Such extraction would be analogous to the determinations of mt from the same total cross section [15–17, 63–65].”
- Higgs boson mass and new physics (2012, unknown): “[34–36] about αs determination and [37–39] about Mt.”
- Hadronic top-quark pair-production with one jet and parton showering (2011, methodology): “The topquark massmt is always taken as a pole mass, and we refer to [42] for a discus sion of the running mass in theMS -scheme.”
- Planck scale boundary conditions and the Higgs mass (2011, background): “[30] is found to be lower than the world best average value.”