Transverse $τ$ polarization in $B_c \to τ\bar ν_τ γ$ decay

Details Transverse $τ$ polarization in $B_c \to τ\bar ν_τ γ$ decay Transverse $τ$ polarization in $B_c \to τ\bar ν_τ γ$ decay

2002-04-24

arxiv.org/abs/hep-ph/0204279v1

J.Phys.G28:1403-1414,2002

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages, latex, 3 figures, appear in J. Phys. G

Scientific paper

10.1088/0954-3899/28/6/319

The possible transverse polarization of the $\tau$-lepton, which is $T$-odd and can be used to measure CP-violation, is estimated precisely in the radiative decay mode $B_c \to \tau \bar \nu_\tau \gamma$ with possible parameters for the multi Higgs doublet model and the R-parity violating supersymmetric model. We find that the up-bound of the transverse polarization with possible parameters in the models is at very different levels i.e. it can be $\leq 15\sim 23%$ for the former but $\leq 0.1 %$ for the latter, and it is accessible experimentally soon.

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