Analyticity and the Isgur-Wise Function

Details Analyticity and the Isgur-Wise Function Analyticity and the Isgur-Wise Function

1992-11-06

arxiv.org/abs/hep-ph/9211222v1

Phys.Lett.B299:123-126,1993

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages, uses harvmac, SLAC-PUB-5956, UCSD/PTH 92-35, CALT-68-1830

Scientific paper

10.1016/0370-2693(93)90892-L

We reconsider the recent derivation by de Rafael and Taron of bounds on the
slope of the Isgur-Wise function. We argue that one must be careful to include
cuts starting below the heavy meson pair production threshold, arising from
heavy quark-antiquark bound states, and that if such cuts are properly
accounted for then no constraints may be derived.

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