$\mathit CP$ VIOLATION PARAMETERS in ${{\mathit B}_{{{s}}}^{0}}$

r$_{B}({{\mathit B}_{{{s}}}^{0}}$ $\rightarrow$ ${{\mathit D}_{{{s}}}^{\mp}}{{\mathit K}^{\pm}}$)

INSPIRE   JSON PDGID:
S086ARX
r$_{B}$ and $\delta _{B}$ are the amplitude ratio and relative strong phase between the amplitudes of $\mathit A({{\mathit B}_{{{s}}}^{0}}$ $\rightarrow$ ${{\mathit D}_{{{s}}}^{+}}{{\mathit K}^{-}}$) and $\mathit A({{\mathit B}_{{{s}}}^{0}}$ $\rightarrow$ ${{\mathit D}_{{{s}}}^{-}}{{\mathit K}^{+}}$),

VALUE DOCUMENT ID TECN  COMMENT
$0.318$ ${}^{+0.034}_{-0.033}$ 1, 2
AAIJ
2025T
 
LHCB ${{\mathit p}}{{\mathit p}}$ at 7, 8, 13 TeV
• • We do not use the following data for averages, fits, limits, etc. • •
$0.327$ ${}^{+0.039}_{-0.037}$ 1
AAIJ
2025T
 
LHCB ${{\mathit p}}{{\mathit p}}$ at 13 TeV
$0.37$ ${}^{+0.10}_{-0.09}$ 3
AAIJ
2018U
 
LHCB ${{\mathit p}}{{\mathit p}}$ at 7, 8 TeV
$0.53$ ${}^{+0.17}_{-0.16}$ 4
AAIJ
2014BF
 
LHCB Repl. by AAIJ 2018U
1  Measured in ${{\mathit B}_{{{s}}}^{0}}$ $\rightarrow$ ${{\mathit D}_{{{s}}}^{\mp}}{{\mathit K}^{\pm}}$ decays, constraining $-2{{\mathit \beta}_{{{s}}}}$ by the measurement of ${{\mathit \phi}_{{{s}}}}$ = $-0.031$ $\pm0.018$ rad. The value is modulo 180$^\circ{}$.
2  Combines the result with that of AAIJ 2018U, for which the values of the nuisance parameters ${{\mathit \Delta}}{{\mathit m}_{{{s}}}}$, ${{\mathit \Gamma}_{{{s}}}}$ and ${{\mathit \Delta}}{{\mathit \Gamma}_{{{s}}}}$ have been re-evaluated and the related systematic uncertainties updated.
3  Measured in ${{\mathit B}_{{{s}}}^{0}}$ $\rightarrow$ ${{\mathit D}_{{{s}}}^{\mp}}{{\mathit K}^{\pm}}$ decays, constraining $-2{{\mathit \beta}_{{{s}}}}$ by the measurement of ${{\mathit \phi}_{{{s}}}}$ = $-0.030$ $\pm0.033$ from HFLAV.
4  Measured in ${{\mathit B}_{{{s}}}^{0}}$ $\rightarrow$ ${{\mathit D}_{{{s}}}^{\mp}}{{\mathit K}^{\pm}}$ decays, constraining $-2{{\mathit \beta}_{{{s}}}}$ by the measurement of ${{\mathit \phi}_{{{s}}}}$ = $0.01$ $\pm0.07$ $\pm0.0$ from AAIJ 2013AR. At 68$\%$ CL.
Conservation Laws:
$\mathit CP$ VIOLATION OBSERVED
References