pdgLive Home   >   ${{\mathit \Lambda}}$   >   $\mathit A_{CP}$( ${{\mathit p}}{{\mathit \mu}^{-}}{{\overline{\mathit \nu}}_{{\mu}}}$ ) in ${{\mathit \Lambda}}$ $\rightarrow$ ${{\mathit p}}{{\mathit \mu}^{-}}{{\overline{\mathit \nu}}_{{\mu}}}$ , ${{\overline{\mathit \Lambda}}}$ $\rightarrow$ ${{\overline{\mathit p}}}{{\mathit \mu}^{+}}{{\mathit \nu}_{{\mu}}}$

${{\mathit \Lambda}}$ $\mathit CP$-violating decay-rate asymmetries

This is the difference between ${{\mathit \Lambda}}$ and ${{\overline{\mathit \Lambda}}}$ decay rates to state ${{\mathit f}}$ and ${{\overline{\mathit f}}}$ divided by the sum of the rates:$
$ $\mathit A_{CP}({{\mathit f}}$) = [(B( ${{\mathit \Lambda}}$ $\rightarrow$ ${{\mathit f}}$ )) $−$ (B( ${{\overline{\mathit \Lambda}}}$ $\rightarrow$ ${{\overline{\mathit f}}}$ ))]/Sum.

$\mathit A_{CP}$( ${{\mathit p}}{{\mathit \mu}^{-}}{{\overline{\mathit \nu}}_{{\mu}}}$ ) in ${{\mathit \Lambda}}$ $\rightarrow$ ${{\mathit p}}{{\mathit \mu}^{-}}{{\overline{\mathit \nu}}_{{\mu}}}$ , ${{\overline{\mathit \Lambda}}}$ $\rightarrow$ ${{\overline{\mathit p}}}{{\mathit \mu}^{+}}{{\mathit \nu}_{{\mu}}}$

INSPIRE   PDGID:

S018B01

VALUE DOCUMENT ID TECN  COMMENT $0.02$ $\pm0.14$ $\pm0.02$ ABLIKIM 2021 AG BES3 ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \Lambda}}{{\overline{\mathit \Lambda}}}$

References:

ABLIKIM 2021AG PRL 127 121802 First Measurement of the Absolute Branching Fraction of $\Lambda \to p \mu^- \bar{\nu}_{\mu}$

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