$\mathit CP$ 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:
AABOUD 2017E
JHEP 1702 071 Measurements of Charge and $\mathit CP$ Asymmetries in ${\mathit {\mathit b}}$-Hadron Decays using Top-Quark Events Collected by the ATLAS Detector in ${{\mathit p}}{{\mathit p}}$ Collisions at $\sqrt {s }$ = 8 TeV
ABAZOV 2014
PR D89 012002 Study of $\mathit CP$-Violating Charge Asymmetries of Single Muons and Like-Sign Dimuons in ${{\mathit p}}{{\overline{\mathit p}}}$ Collisions
ABAZOV 2011U
PR D84 052007 Measurement of the Anomalous Like-Sign Dimuon Charge Asymmetry with 9 fb${}^{-1}$ of ${{\mathit p}}{{\overline{\mathit p}}}$ Collisions
ABAZOV 2010H
PRL 105 081801 Evidence for an Anomalous Like-Sign Dimuon Charge Asymmetry
Also
PR D82 032001 Evidence for an Anomalous Like-Sign Dimuon Charge Asymmetry