Heavy Meson Hyperfine Splittings: A Puzzle for Heavy Quark Chiral Perturbation Theory

Details Heavy Meson Hyperfine Splittings: A Puzzle for Heavy Quark Chiral Perturbation Theory Heavy Meson Hyperfine Splittings: A Puzzle for Heavy Quark Chiral Perturbation Theory

1992-11-18

arxiv.org/abs/hep-ph/9211267v1

Phys.Lett.B303:345-349,1993

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages (LaTeX, 2 PS figures available upon request), MIT-CTP#2166

Scientific paper

10.1016/0370-2693(93)91443-Q

We show that there is a large discrepancy between the expected light flavor dependence of the heavy pseudoscalar--vector mass splittings and the measured values. We demonstrate that the one--loop calculation is unreliable. Moreover, agreement with experiment requires the leading dependence on SU(3) symmetry breaking to be nearly cancelled, so that the heavy quark mass dependence is unknown and the expected dependence on the light quark mass is not realized.

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