Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1997-01-14
Phys.Lett. B402 (1997) 159-166
Physics
High Energy Physics
High Energy Physics - Phenomenology
RevTex, 13 pages, minor changes, version to appear in PLB
Scientific paper
10.1016/S0370-2693(97)00403-6
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.
Kiers Ken
Ng John N.
Wu Guo-Hong
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