An angular distribution analysis of $Λ_b$ decays

A study of the angular distributions of the processes $Λ_b \to Λ V(1^-)$ with $V ({J/Ψ,ρ}^0)$ is performed. Emphasis is put on the initial $Λ_b$ polarization and the polarization density-matrices are derived to perform tests of both Time-Reversal (TR) and CP violation.

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