1997/01/31 by Guo-Hong Wu, Ken Kiers, John N. Ng
Medicine · Physics and Astronomy · #B meson #Lepton #Medical Imaging Techniques and Applications #Meson #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Semileptonic decay #hep-ex #hep-ph
paper · pdf · doi:10.1016/s0370-2693(97)00403-6
published as Phys.Lett.B402:159-166,1997 · RevTex, 13 pages, minor changes, version to appear in PLB
arxiv created 1997/05/12 · openalex publication_date 1997/06/01 · arxiv updated 2014/11/17 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We demonstrate that polarization measurements in exclusive semileptonic B decays are powerful tools for unraveling non-standard model sources of T-violation. Measurements of the transverse polarization of the tau lepton in the B to D tau nu and B to D* tau nu decays probe separately effective scalar and pseudoscalar CP-violating four-Fermi interactions, whereas the D* polarization in the B to D* l nu (l=e,mu) decay is sensitive to an effective right-handed quark current interaction. Two T-odd polarization structures exist involving the D* polarization and they can be isolated and studied separately. An estimate of these T-odd effects is also given in the context of supersymmetric theories.