$\mathit CP$ 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.

$\Delta \mathit A_{CP}$( ${{\mathit \Lambda}_{{{b}}}^{0}}$ $\rightarrow$ ${{\mathit p}}{{\mathit a}_{{{1}}}{(1260)}^{-}}$ )

INSPIRE  
$\Delta \mathit A_{CP}{}\equiv$ $\mathit A_{CP}$( ${{\mathit \Lambda}_{{{b}}}^{0}}$ $\rightarrow$ ${{\mathit p}}{{\mathit a}_{{{1}}}{(1260)}^{-}}$ ) $−$ $\mathit A_{CP}$( ${{\mathit \Lambda}_{{{b}}}^{0}}$ $\rightarrow$ ( ${{\mathit \Lambda}_{{{c}}}^{+}}$ $\rightarrow$ ${{\mathit p}}{{\mathit \pi}^{-}}{{\mathit \pi}^{+}}$) ${{\mathit \pi}^{-}}$ ). 419 $<$ m( ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{+}}$ ) $<$ 1500 MeV.
VALUE ($ 10^{-2} $) DOCUMENT ID TECN  COMMENT
$-1.5$ $\pm4.2$ $\pm0.6$
AAIJ
2019AH
 LHCB ${{\mathit p}}{{\mathit p}}$ at 7 and 8 TeV
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