Light Quark Energy Distribution in Heavy Quark Symmetry

Abstract

Using heavy quark symmetry we construct an energy sum rule relating the form factor of a heavy flavored meson $\xi (w)$ to the light quark energy distribution. We find that the current available data for $\xi (w)$ is consistent with a broad energy distribution rather than with that of a pure quark/anti-quark bound state, indicating a large nonvalence content.

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