$\mathit CP$ 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.

$\Delta \mathit A_{CP}$( ${{\mathit \Lambda}_{{b}}^{0}}$ $\rightarrow$ ( ${{\mathit p}}{{\mathit K}^{-}})_{highmass}{{\mathit \phi}{(1020)}}$)

INSPIRE   PDGID:
S040A37
$\Delta \mathit A_{CP}{}\equiv$ $\mathit A_{CP}$ ( ${{\mathit \Lambda}_{{b}}^{0}}$ $\rightarrow$ ( ${{\mathit p}}{{\mathit K}^{-}})_{highmass}{{\mathit \phi}{(1020)}}$) $−$ $\mathit A_{CP}$( ${{\mathit \Lambda}_{{b}}^{0}}$ $\rightarrow$ ( ${{\mathit p}}{{\mathit K}^{-}}{{\mathit \pi}^{+}}$) ${{\mathit \pi}^{-}}$ ). m( ${{\mathit p}}{{\mathit K}^{-}}$ ) $>$ 1600 MeV and 1005 $<$ m( ${{\mathit K}^{+}}{{\mathit K}^{-}}$ ) $<$ 1040 MeV.
VALUE ($ 10^{-2} $) DOCUMENT ID TECN  COMMENT
$-0.7$ $\pm3.3$ $\pm0.7$ 1
AAIJ
2019AH
 LHCB ${{\mathit p}}{{\mathit p}}$ at 7 and 8 TeV
1  Measurement done with $\mathit m$( ${{\mathit p}}{{\mathit K}^{-}}$ ) $>$ 1600 MeV/c${}^{2}$.
Conservation Laws:
$\mathit CP$ INVARIANCE
References:
AAIJ 2019AH
EPJ C79 745 Measurements of $CP$ asymmetries in charmless four-body $\Lambda_b^0$ and $\Xi_b^0$ decays