$\mathit CP$ AND $\mathit T$ VIOLATION PARAMETERS

Measured values of the triple-product asymmetry parameters, odd under time-reversal, are defined as ${{\mathit A}}_{c(s)}({{\mathit \Lambda}}/{{\mathit \phi}}$) = (${{\mathit N}}{}^{+}_{c(s)}$ $−$ ${{\mathit N}}{}^{−}_{c(s)}$) $/$ (sum) where ${{\mathit N}}{}^{+}_{c(s)}$, ${{\mathit N}}{}^{−}_{c(s)}$ are the number of ${{\mathit \Lambda}}$ or ${{\mathit \phi}}$ candidates for which the cos(${{\mathit \Phi}}$) and sin(${{\mathit \Phi}}$) observables are positive and negative, respectively. Angles cos(${{\mathit \Phi}}$) and sin(${{\mathit \Phi}}$) are defined as in LEITNER 2007 .

a$_{CP}$( ${{\mathit \Lambda}_{{b}}^{0}}$ $\rightarrow$ ${{\mathit p}}{{\mathit K}^{-}}{{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$ )

INSPIRE   PDGID:
S040A12
VALUE (%) DOCUMENT ID TECN  COMMENT
$1.2$ $\pm5.0$ $\pm0.7$
AAIJ
2017T
 LHCB ${{\mathit p}}{{\mathit p}}$ at 7, 8 TeV
Conservation Laws:
$\mathit CP$ INVARIANCE
References:
AAIJ 2017T
JHEP 1706 108 Observation of the Decay ${{\mathit \Lambda}_{{b}}^{0}}$ $\rightarrow$ ${{\mathit p}}{{\mathit K}^{-}}{{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$ and a Search for $\mathit CP$ Violation