# Re($\epsilon _{{\boldsymbol {\boldsymbol b}}}$) $/$ (1 + $\vert \epsilon _{{\boldsymbol {\boldsymbol b}}}$ $\vert {}^{2}$) INSPIRE search

CP impurity in semileptonic ${\mathit {\mathit b}}$-hadron decays.
VALUE ($10^{-3}$) DOCUMENT ID TECN  COMMENT
$\bf{ -1.3 \pm0.4}$ OUR AVERAGE
$-6.2$ $\pm5.2$ $\pm4.7$ 1
 2017 E
ATLS ${{\mathit p}}{{\mathit p}}$ at 8 TeV
$-1.24$ $\pm0.38$ $\pm0.18$ 2
 2014
D0 ${{\mathit p}}{{\overline{\mathit p}}}$ at 1.96 TeV
• • • We do not use the following data for averages, fits, limits, etc. • • •
$-1.97$ $\pm0.43$ $\pm0.23$ 3
 2011 U
D0 Repl. by ABAZOV 2014
$-2.39$ $\pm0.63$ $\pm0.37$ 4
 2010 H
D0 Repl. by ABAZOV 2011U
1  AABOUD 2017E reports a measurement of charge asymmetry of A${}^{b}_{SL}$ = $-0.025$ $\pm0.021$ $\pm0.019$ 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${}^{b}_{SL}$ = $-0.00496$ $\pm0.00153$ $\pm0.00072$ in semileptonic ${{\mathit b}}$-hadron decays.
3  ABAZOV 2011U reports a measurement of like-sign dimuon charge asymmetry of ${{\mathit A}_{{SL}}^{b}}$ = $-0.00787$ $\pm0.00172$ $\pm0.00093$ in semileptonic ${{\mathit b}}$-hadron decays.
4  ABAZOV 2010H reports a measurement of like-sign dimuon charge asymmetry of A${}^{b}_{SL}=-0.00957$ $\pm0.00251$ $\pm0.00146$ 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${}^{d}_{SL}=-0.0047$ $\pm0.0046$ measured from ${{\mathit B}}$-factories, they obtain the asymmetry for ${{\mathit B}_{{s}}^{0}}$ as A${}^{s}_{SL}=-0.0146$ $\pm0.0075$.
Conservation Laws:
 $\mathit CP$ VIOLATION OBSERVED
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
 ABAZOV 2014N
PR D89 012005 Measurement of the ${{\mathit W}}$ Boson Mass with the ${D0}$ Detector