Polarization in semileptonic B decays
arXiv:hep-ph/9901349 · doi:10.1007/s100520050636
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).
arXiv comment13 pages, 1 figure, corrected typos, to appear in EPJ C