$\mathit CP$ VIOLATION PARAMETERS

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

INSPIRE   PDGID:
S042CJK
VALUE ($ 10^{-2} $) DOCUMENT ID TECN  COMMENT
$\bf{ -0.8 \pm1.7}$ OUR EVALUATION  $~~$(Produced by HFLAV)
$\bf{ 0.3 \pm1.0}$ OUR AVERAGE
$0.4$ $\pm1.2$ 1
AAIJ
2024
LHCB ${{\mathit p}}{{\mathit p}}$ at 7, 8 and 13 TeV
$1.5$ $\pm2.1$ ${}^{+2.3}_{-4.5}$ 2, 3
ADACHI
2012A
 BELL ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \Upsilon}{(4S)}}$
$-10.4$ $\pm5.5$ ${}^{+2.7}_{-4.7}$ 3, 4
ADACHI
2012A
 BELL ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \Upsilon}{(4S)}}$
$-1.9$ $\pm2.6$ ${}^{+4.1}_{-1.7}$ 5, 3
ADACHI
2012A
 BELL ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \Upsilon}{(4S)}}$
$8.9$ $\pm7.6$ $\pm2.0$ 4
AUBERT
2009K
 BABR ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \Upsilon}{(4S)}}$
$1.6$ $\pm2.3$ $\pm1.8$
AUBERT
2009K
 BABR ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \Upsilon}{(4S)}}$
• • We do not use the following data for averages, fits, limits, etc. • •
$0.8$ $\pm1.2$ $\pm0.3$ 6, 7
AAIJ
2024
LHCB ${{\mathit p}}{{\mathit p}}$ at 13 TeV
$-8.7$ $\pm4.8$ $\pm0.5$ 8
AAIJ
2024
LHCB ${{\mathit p}}{{\mathit p}}$ at 13 TeV
$1.5$ $\pm1.3$ $\pm0.3$ 9
AAIJ
2024
LHCB ${{\mathit p}}{{\mathit p}}$ at 13 TeV
$-1.7$ $\pm2.9$ 6, 10
AAIJ
2017BN
 LHCB ${{\mathit p}}{{\mathit p}}$ at 7, 8 TeV
$-1.4$ $\pm3.0$ 9
AAIJ
2017BN
 LHCB ${{\mathit p}}{{\mathit p}}$ at 7, 8 TeV
$-5$ $\pm10$ $\pm1$ 8
AAIJ
2017BN
 LHCB ${{\mathit p}}{{\mathit p}}$ at 7, 8 TeV
$-3.8$ $\pm3.2$ $\pm0.5$ 11
AAIJ
2015N
 LHCB Repl. by AAIJ 2017BN
$3$ $\pm9$ $\pm1$ 12
AAIJ
2013K
 LHCB Repl. by AAIJ 2015N
$-4$ $\pm7$ $\pm5$ 3, 4
SAHOO
2008
BELL Repl. by ADACHI 2012A
$-1.8$ $\pm2.1$ $\pm1.4$ 3
CHEN
2007
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.
3  The paper reports $\mathit A$, which is equal to $−\mathit C$.
4  Uses ${{\mathit B}^{0}}$ $\rightarrow$ ${{\mathit \psi}{(2S)}}{{\mathit K}_S^0}$ decays.
5  Uses ${{\mathit B}^{0}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit K}_L^0}$ decays.
6  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 ${{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$.
7  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.
8  Measurement based on ${{\mathit B}^{0}}$ $\rightarrow$ ${{\mathit \psi}{(2S)}}{{\mathit K}_S^0}$ with ${{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$.
9  Measurement based on ${{\mathit B}^{0}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit K}_S^0}$ with ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$ and ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit e}^{-}}$.
10  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.
11  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.
12  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
References