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

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

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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 2017 E 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 2011 U D0 Repl. by ABAZOV 2014 $-2.39$ $\pm0.63$ $\pm0.37$ 4 ABAZOV 2010 H 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

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