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arXiv · hep-ph/9502398

Constraints on the light quark masses from the heavy meson spectrum

Markus A. Luty·Raman Sundrum
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Abstract

We use the observed $SU(3)$ breaking in the mass spectrum of mesons containing a single heavy quark to place restrictions on the light quark current masses. A crucial ingredient in this analysis is our recent first-principles calculation of the electromagnetic contribution to the isospin-violating mass splittings. We also pay special attention to the role of higher-order corrections in chiral perturbation theory. We find that large corrections are necessary for the heavy meson data to be consistent with $m_u = 0$.

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Markus A. Luty, Raman Sundrum. 1995-03-24. Constraints on the light quark masses from the heavy meson spectrum. https://doi.org/10.1103/physrevd.52.5202

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