On an exact low-energy duality in heavy-quark semileptonic decay
- 1 July 1989
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review D
- Vol. 40 (1), 101-105
- https://doi.org/10.1103/physrevd.40.101
Abstract
Shifman and Voloshin have pointed out that in a certain limit there would be an exact and calculable duality between quark- and hadronic-level pictures of meson semileptonic decay. I show here that this duality is local in the Dalitz plot and correct to next-to-leading order in the heavy quarks' mass difference. I then discuss some implications of these results for extracting from data on and .
Keywords
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