$\mathit CP$ VIOLATION PARAMETERS in semileptonic ${\mathit {\mathit b}}$-hadron decays.

Re($\epsilon _{{\mathit {\mathit b}}}$) $/$ (1 + $\vert \epsilon _{{\mathit {\mathit b}}}$ $\vert {}^{2}$)

INSPIRE   PDGID:
S051EPS
CP impurity in semileptonic ${\mathit {\mathit b}}$-hadron decays.
VALUE ($ 10^{-3} $) DOCUMENT ID TECN  COMMENT
• • We do not use the following data for averages, fits, limits, etc. • •
$-6.2$ $\pm5.2$ $\pm4.7$ 1
AABOUD
2017E
ATLS ${{\mathit p}}{{\mathit p}}$ at 8 TeV
$-1.24$ $\pm0.38$ $\pm0.18$ 2
ABAZOV
2014
D0 ${{\mathit p}}{{\overline{\mathit p}}}$ at 1.96 TeV
$-1.97$ $\pm0.43$ $\pm0.23$ 3
ABAZOV
2011U
D0 Repl. by ABAZOV 2014
$-2.39$ $\pm0.63$ $\pm0.37$ 4
ABAZOV
2010H
D0 Repl. by ABAZOV 2011U
1  AABOUD 2017E reports a measurement of charge asymmetry of A${}^{b}_{SL}$ = ($-25$ $\pm21$ $\pm19$) $ \times 10^{-3}$ in lepton + jets ${{\mathit t}}{{\overline{\mathit t}}}$ events in which a ${{\mathit b}}$-hadron decays semileptonically to a soft muon.
2  ABAZOV 2014 reports a measurement of like-sign dimuon charge asymmetry of A${}^{b}_{SL}$ = ($-4.96$ $\pm1.53$ $\pm0.72$) $ \times 10^{-3}$ in semileptonic ${{\mathit b}}$-hadron decays.
3  ABAZOV 2011U reports a measurement of like-sign dimuon charge asymmetry of ${{\mathit A}_{{{SL}}}^{b}}$ = ($-7.87$ $\pm1.72$ $\pm0.93$) $ \times 10^{-3}$ in semileptonic ${{\mathit b}}$-hadron decays.
4  ABAZOV 2010H reports a measurement of like-sign dimuon charge asymmetry of A${}^{b}_{SL}=(-9.57$ $\pm2.51$ $\pm1.46$) $ \times 10^{-3}$ in semileptonic ${\mathit {\mathit b}}$-hadron decays. Using the measured production ratio of ${{\mathit B}_{{{d}}}^{0}}$ and ${{\mathit B}_{{{s}}}^{0}}$, and the asymmetry of ${{\mathit B}_{{{d}}}^{0}}$ A${}^{d}_{SL}=(-4.7$ $\pm4.6$) $ \times 10^{-3}$ measured from ${{\mathit B}}$-factories, they obtain the asymmetry for ${{\mathit B}_{{{s}}}^{0}}$ as A${}^{s}_{SL}=(-14.6$ $\pm7.5$) $ \times 10^{-3}$.
References