$\mathit CP$ VIOLATION PARAMETERS

$\mathit C_{ {{\mathit J / \psi}{(1S)}} {{\mathit \pi}^{0}} }$ ( ${{\mathit B}^{0}}$ $\rightarrow$ ${{\mathit J / \psi}{(1S)}}{{\mathit \pi}^{0}}$ )

INSPIRE   PDGID:
S042CPL
VALUE DOCUMENT ID TECN  COMMENT
$\bf{ 0.03 \pm0.17}$ OUR AVERAGE  Error includes scale factor of 1.5.
$0.15$ $\pm0.14$ ${}^{+0.04}_{-0.03}$ 1
PAL
2018
BELL ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \Upsilon}{(4S)}}$
$-0.20$ $\pm0.19$ $\pm0.03$
AUBERT
2008AU
 BABR ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \Upsilon}{(4S)}}$
• • We do not use the following data for averages, fits, limits, etc. • •
$-0.08$ $\pm0.16$ $\pm0.05$ 1
LEE
2008A
 BELL Repl. by PAL 2018
$-0.21$ $\pm0.26$ $\pm0.06$
AUBERT,B
2006B
 BABR Repl. by AUBERT 2008AU
$0.01$ $\pm0.29$ $\pm0.03$ 1
KATAOKA
2004
BELL Repl. by LEE 2008A
$0.38$ $\pm0.41$ $\pm0.09$
AUBERT
2003N
 BABR Repl. by AUBERT,B 2006B
1  BELLE Collab. quotes $\mathit A_{ {{\mathit J / \psi}} {{\mathit \pi}^{0}} }$ which is equal to $−\mathit C_{ {{\mathit J / \psi}} {{\mathit \pi}^{0}} }$.
Conservation Laws:
$\mathit CP$ INVARIANCE
References:
PAL 2018
PR D98 112008 Measurement of the branching fraction and time-dependent $CP$ asymmetry for $B^0\to J/\psi\pi^0$ decays
AUBERT 2008AU
PRL 101 021801 Evidence for $\mathit CP$ Violation in ${{\mathit B}^{0}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \pi}^{0}}$ Decays
LEE 2008A
PR D77 071101 Improved Measurement of Time-Dependent $\mathit CP$ Violation in ${{\mathit B}^{0}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \pi}^{0}}$ Decays
AUBERT,B 2006B
PR D74 011101 Measurements of the Branching Fraction and Time-Dependent $\mathit CP$ Asymmetries of ${{\mathit B}^{0}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \pi}^{0}}$ Decays
KATAOKA 2004
PRL 93 261801 Study of Time-Dependent $\mathit CP$ Violation in ${{\mathit B}^{0}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \pi}^{0}}$ Decays
AUBERT 2003N
PRL 91 061802 Study of Time Dependent $\mathit CP$ Asymmetry in Neutral ${{\mathit B}}$ Decays to ${{\mathit J / \psi}}{{\mathit \pi}^{0}}$