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arXiv · hep-ph/9701293

Testing Time Reversal Invariance in Exclusive Semileptonic B Meson Decays

Guo-Hong Wu·Ken Kiers·John N. Ng
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Abstract

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.

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Guo-Hong Wu, Ken Kiers, John N. Ng. 1997-05-12. Testing Time Reversal Invariance in Exclusive Semileptonic B Meson Decays. https://doi.org/10.1016/s0370-2693(97)00403-6

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