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

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

2002-04-30

arxiv.org/abs/hep-ph/0204356v1

Phys.Rev. D68 (2003) 013005

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages, LaTeX, 1 figure

Scientific paper

10.1103/PhysRevD.68.013005

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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