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$\mathit CP$ VIOLATION PARAMETERS

$\mathit C_{{{\mathit J / \psi}{(nS)}} {{\mathit K}^{0}}}$ (${{\mathit B}^{0}}$ $\rightarrow$ ${{\mathit J / \psi}{(nS)}}{{\mathit K}^{0}}$)

INSPIRE JSON (beta) PDGID:

VALUE ($ 10^{-2} $)

DOCUMENT ID

TECN

COMMENT

$\bf{ 0.2 \pm1.0}$

OUR EVALUATION $~~$(Produced by HFLAV)

$\bf{ 0.1 \pm1.0}$

OUR AVERAGE

$0.4$ $\pm1.2$

LHCB

${{\mathit p}}{{\mathit p}}$ at 7, 8 and 13 TeV

$-3.5$ $\pm2.6$ $\pm2.9$

BEL2

${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \Upsilon}{(4S)}}$

$1.5$ $\pm2.1$ ${}^{+2.3}_{-4.5}$

BELL

${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \Upsilon}{(4S)}}$

$-10.4$ $\pm5.5$ ${}^{+2.7}_{-4.7}$

BELL

${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \Upsilon}{(4S)}}$

$-1.9$ $\pm2.6$ ${}^{+4.1}_{-1.7}$

BELL

${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \Upsilon}{(4S)}}$

$8.9$ $\pm7.6$ $\pm2.0$

BABR

${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \Upsilon}{(4S)}}$

$1.6$ $\pm2.3$ $\pm1.8$

BABR

${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \Upsilon}{(4S)}}$

• • We do not use the following data for averages, fits, limits, etc. • •

$0.8$ $\pm1.2$ $\pm0.3$

LHCB

${{\mathit p}}{{\mathit p}}$ at 13 TeV

$-8.7$ $\pm4.8$ $\pm0.5$

LHCB

${{\mathit p}}{{\mathit p}}$ at 13 TeV

$1.5$ $\pm1.3$ $\pm0.3$

LHCB

${{\mathit p}}{{\mathit p}}$ at 13 TeV

$-1.7$ $\pm2.9$

LHCB

${{\mathit p}}{{\mathit p}}$ at 7, 8 TeV

$-1.4$ $\pm3.0$

LHCB

${{\mathit p}}{{\mathit p}}$ at 7, 8 TeV

$-5$ $\pm10$ $\pm1$

LHCB

${{\mathit p}}{{\mathit p}}$ at 7, 8 TeV

$-3.8$ $\pm3.2$ $\pm0.5$

LHCB

Repl. by AAIJ 2017BN

$3$ $\pm9$ $\pm1$

LHCB

Repl. by AAIJ 2015N

$-4$ $\pm7$ $\pm5$

BELL

Repl. by ADACHI 2012A

$-1.8$ $\pm2.1$ $\pm1.4$

BELL

Repl. by ADACHI 2012A

¹	A combination of this Run 2 result with the Run 1 result from AAIJ 2017BN is reported with a correlation coefficient of 0.40.

²	Uses ${{\mathit B}^{0}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit K}_S^0}$ decays with 362 fb${}^{-1}$ BELL II data.

³	Uses ${{\mathit B}^{0}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit K}_S^0}$ decays.

⁴	The paper reports $\mathit A$, which is equal to $−\mathit C$.

⁵	Uses ${{\mathit B}^{0}}$ $\rightarrow$ ${{\mathit \psi}{(2S)}}{{\mathit K}_S^0}$ decays.

⁶	Uses ${{\mathit B}^{0}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit K}_L^0}$ decays.

⁷

Measurement based on ${{\mathit B}^{0}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit K}_S^0}$ , ${{\mathit B}^{0}}$ $\rightarrow$ ${{\mathit \psi}{(2S)}}{{\mathit K}_S^0}$ with ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$, ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit e}^{-}}$ and ${{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$.

⁸

AAIJ 2024 provides the correlation coefficient ${{\mathit \rho}}$ = 0.441 between the uncertainties of $\mathit C_{{{\mathit J / \psi}{(nS)}} {{\mathit K}^{0}}}$ (${{\mathit B}^{0}}$ $\rightarrow$ ${{\mathit J / \psi}{(nS)}}{{\mathit K}^{0}}$) and $\mathit S_{{{\mathit J / \psi}{(nS)}} {{\mathit K}^{0}}}$ (${{\mathit B}^{0}}$ $\rightarrow$ ${{\mathit J / \psi}{(nS)}}{{\mathit K}^{0}}$) measurements.

⁹	Measurement based on ${{\mathit B}^{0}}$ $\rightarrow$ ${{\mathit \psi}{(2S)}}{{\mathit K}_S^0}$ with ${{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$.

¹⁰	Measurement based on ${{\mathit B}^{0}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit K}_S^0}$ with ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$ and ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit e}^{-}}$.

¹¹

AAIJ 2017BN provides the correlation coefficient ${{\mathit \rho}}$ = 0.42 between the uncertainties of $\mathit S_{{{\mathit J / \psi}{(nS)}} {{\mathit K}^{0}}}$ (${{\mathit B}^{0}}$ $\rightarrow$ ${{\mathit J / \psi}{(nS)}}{{\mathit K}^{0}}$) and $\mathit C_{{{\mathit J / \psi}{(nS)}} {{\mathit K}^{0}}}$ (${{\mathit B}^{0}}$ $\rightarrow$ ${{\mathit J / \psi}{(nS)}}{{\mathit K}^{0}}$) measurements.

¹²	AAIJ 2015N uses 41,560 flavor-tagged ${{\mathit B}_{{{d}}}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit K}_S^0}$ events from 3 fb${}^{-1}$ of integrated luminosity. Provides the correlation coefficient ${{\mathit \rho}}$ = 0.483 between the statistical uncertainties of and measurements.

¹³

AAIJ 2013K uses 8200 flavor-tagged ${{\mathit B}_{{{d}}}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit K}_S^0}$ events from 1 fb${}^{-1}$ of integrated luminosity. Provides the correlation coefficient ${{\mathit \rho}}$ = 0.42 between the statistical uncertainties of $\mathit S_{{{\mathit J / \psi}{(nS)}} {{\mathit K}^{0}}}$ (${{\mathit B}^{0}}$ $\rightarrow$ ${{\mathit J / \psi}{(nS)}}{{\mathit K}^{0}}$) and $\mathit C_{{{\mathit J / \psi}{(nS)}} {{\mathit K}^{0}}}$ (${{\mathit B}^{0}}$ $\rightarrow$ ${{\mathit J / \psi}{(nS)}}{{\mathit K}^{0}}$) measurements.

Conservation Laws:

$\mathit CP$ INVARIANCE

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