Testing time reversal invariance in exclusive semileptonic B meson decays
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 τ lepton in the B -> Dτv and B -> D*τv decays probe separately effective scalar and pseudoscalar CP-violating four-Fermi interactions, whereas the D* polarization in the B -> D*lv (l = e, μ) 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.
- Publication:
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Physics Letters B
- Pub Date:
- February 1997
- DOI:
- 10.1016/S0370-2693(97)00403-6
- arXiv:
- arXiv:hep-ph/9701293
- Bibcode:
- 1997PhLB..402..159W
- Keywords:
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- High Energy Physics - Phenomenology;
- High Energy Physics - Experiment
- E-Print:
- RevTex, 13 pages, minor changes, version to appear in PLB