$\mathit CP$ VIOLATION

$\mathit A_{CP}$ is defined as
$\mathit A_{CP}$ = ${B( {{\mathit \Lambda}_{{{b}}}^{0}} \rightarrow {{\mathit f}}) – B( {{\overline{\mathit \Lambda}}_{{{b}}}^{0}} \rightarrow {{\overline{\mathit f}}})\over B( {{\mathit \Lambda}_{{{b}}}^{0}} \rightarrow {{\mathit f}}) + B( {{\overline{\mathit \Lambda}}_{{{b}}}^{0}} \rightarrow {{\overline{\mathit f}}})}$,
the $\mathit CP$-violation asymmetry of exclusive ${{\mathit \Lambda}_{{{b}}}^{0}}$ and ${{\overline{\mathit \Lambda}}_{{{b}}}^{0}}$ decay.

$\Delta \mathit A_{CP}$( ${{\mathit \Lambda}_{{{b}}}^{0}}$ $\rightarrow({{\mathit p}}{{\mathit K}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}})_{LBM}$)

INSPIRE   PDGID:
S040A25
$\Delta \mathit A_{CP}{}\equiv\mathit A_{CP}$( ${{\mathit \Lambda}_{{{b}}}^{0}}$ $\rightarrow({{\mathit p}}{{\mathit K}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}})_{LBM})−\mathit A_{CP}$( ${{\mathit \Lambda}_{{{b}}}^{0}}$ $\rightarrow$ ( ${{\mathit \Lambda}_{{{c}}}^{+}}$ $\rightarrow$ ${{\mathit p}}{{\mathit K}^{-}}{{\mathit \pi}^{+}}$) ${{\mathit \pi}^{-}}$). Two-body low invariant-mass region (LBM): m(${{\mathit p}}{{\mathit K}^{-}}$) $<$ 2000 MeV and m(${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$) $<$ 1640 MeV.
VALUE ($ 10^{-2} $) DOCUMENT ID TECN  COMMENT
$3.5$ $\pm1.5$ $\pm0.5$ 1
AAIJ
2019AH
LHCB ${{\mathit p}}{{\mathit p}}$ at 7 and 8 TeV
1  Measurement done with $\mathit m({{\mathit p}}{{\mathit K}^{-}}$) $<$ 2000 MeV/c${}^{2}$ and $\mathit m({{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$) $<$ 1640 MeV/c${}^{2}$.
Conservation Laws:
$\mathit CP$ INVARIANCE
References