Charm Quark Mass with Calibrated Uncertainty

Jens Erler; Pere Masjuan; Hubert Spiesberger

Charm Quark Mass with Calibrated Uncertainty

High Energy Physics - Phenomenology 2017-08-01 v1

Authors: Jens Erler , Pere Masjuan , Hubert Spiesberger

Abstract

We determine the charm quark mass ${\hat m}_c({\hat m}_c)$ from QCD sum rules of moments of the vector current correlator calculated in perturbative QCD. Only experimental data for the charm resonances below the continuum threshold are needed in our approach, while the continuum contribution is determined by requiring self-consistency between various sum rules, including the one for the zeroth moment. Existing data from the continuum region can then be used to bound the theoretical error. Our result is ${\hat m}_c({\hat m}_c) = 1272 \pm 8$ MeV for $\hat\alpha_s(M_Z) = 0.1182$ . Special attention is given to the question how to quantify and justify the uncertainty.

Keywords

charm quark production in high energy collisions quark masses

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@article{arxiv.1707.09404,
  title  = {Charm Quark Mass with Calibrated Uncertainty},
  author = {Jens Erler and Pere Masjuan and Hubert Spiesberger},
  journal= {arXiv preprint arXiv:1707.09404},
  year   = {2017}
}

Comments

6 pages, 4 figures, talk presented at the 2017 European Physical Society conference on High Energy Physics (EPS-HEP 2017), July 5-12, 2017, Venice, Italy

Charm Quark Mass with Calibrated Uncertainty

Abstract

Keywords

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