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$ρ$ Polarization and `Model Independent' Extraction of $|V_{ub}|/|V_{cd}|$ from $D\toρ\ellν$ and $B\toρ\ellν$

Winston Roberts
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Abstract

We briefly discuss the predictions of the heavy quark effective theory for the semileptonic decays of a heavy pseudoscalar to a light one, or to a light vector meson. We point out that measurement of combinations of differential helicity decay rates at Cleo-c and the $B$ factories can provide a model independent means of extracting the ratio $|V_{ub}|/|V_{cd}|$. We briefly discuss the corrections to this prediction.

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Winston Roberts. 2002-04-30. $ρ$ Polarization and `Model Independent' Extraction of $|V_{ub}|/|V_{cd}|$ from $D\toρ\ellν$ and $B\toρ\ellν$. https://doi.org/10.1103/physrevd.68.013005

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