Tau Polarization in ${\Lambda }_b\to X_c\tau \bar{\nu }$ and $B\to X_c\tau \bar{\nu }$

Abstract

We discuss the longitudinal and transverse $\tau$-polarization in inclusive decays of hadrons containing $b$-quarks. The calculation is performed by means of an OPE in HQET. Some mathematical difficulties in calculating transverse polarizations are explained. Numerical results are presented for longitudinal and for transverse polarizations, both in and perpendicular to the decay plane.

LATEX, 20 pages, 5 Postscript figures

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Cited by in corpus (8)

• Tau Polarization Asymmetry in $B\to X_s{\tau }^{+}{\tau }^{-}$
• (Lambda_b -> Lambda l^+ l^-) decay in universal extra dimensions
• Double-lepton polarization asymmetries in (Lambda_b -> Lambda l^+ l^-) decay in universal extra dimension model
• Polarization effects in exclusive semileptonic (Lambda_b -> Lambda l^+ l^-) decay
• Spin-Momentum Correlations in Inclusive Semileptonic Decays of Polarized ${\Lambda }_b$ Baryons
• Semileptonic Transition of $Σ_b \rar Σμ^+ μ^-$ in Family Non-universal $Z^{\prime }$ Model
• Unparticle physics effects in (Lambda_b -> Lambda + missing energy) processes
• Polarized Λ_b \to X_c τνin the SM and THDM