Polarization in semileptonic B decays
M. Jezabek, P. Urban
TL;DR
This paper calculates the tau lepton polarization in semileptonic B decays, incorporating nonperturbative HQET corrections, providing insights into decay dynamics with minimal perturbative QCD influence.
Contribution
It offers a detailed calculation of tau polarization in B decays including nonperturbative HQET corrections, extending previous work by considering these effects.
Findings
Tau polarization results including HQET corrections
Perturbative QCD corrections are likely negligible
Provides theoretical predictions for experimental comparison
Abstract
The paper gives the polarization of the tau lepton in the semileptonic B decays with respect to the direction of the virtual W boson. The result is given including the nonperturbative HQET corrections.The perturbative QCD corrections are probably negligible as suggested by the existing results for the longitudinal polarization of the charged lepton (Jezabek and Urban, 1998).
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