Constraints on the light quark masses from the heavy meson spectrum

Details Constraints on the light quark masses from the heavy meson spectrum Constraints on the light quark masses from the heavy meson spectrum

1995-02-27

arxiv.org/abs/hep-ph/9502398v2

Phys.Rev.D52:5202-5205,1995

Physics

High Energy Physics

High Energy Physics - Phenomenology

Fixed typo in eq. (3.7); results unchanged.

Scientific paper

10.1103/PhysRevD.52.5202

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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