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${{\mathit \Xi}_{{{b}}}}$ MEAN LIFE

``OUR EVALUATION'' is an average using rescaled values of the data listed below. The average and rescaling were performed by the Heavy Flavor Averaging Group (HFLAV) and are described at https://hflav.web.cern.ch/. The averaging/rescaling procedure takes into account correlations between the measurements and asymmetric lifetime errors.

${{\mathit \Xi}_{{{b}}}}$ MEAN LIFE

INSPIRE   JSON  (beta) PDGID:

S060T

VALUE ($ 10^{-12} $ s) DOCUMENT ID TECN  COMMENT • • We do not use the following data for averages, fits, limits, etc. • • $1.48$ ${}^{+0.40}_{-0.31}$ $\pm0.12$ 1 ABDALLAH 2005 C DLPH ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit Z}^{0}}$ $1.35$ ${}^{+0.37}_{-0.28}$ ${}^{+0.15}_{-0.17}$ 2 BUSKULIC 1996 T ALEP ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit Z}}$ $1.5$ ${}^{+0.7}_{-0.4}$ $\pm0.3$ 3 ABREU 1995 V DLPH Repl. by ABDALLAH 2005C 1  Used the decay length of ${{\mathit \Xi}^{-}}$ accompanied by a lepton of the same sign. 2  Excess ${{\mathit \Xi}^{-}}{{\mathit \ell}^{-}}$, impact parameters. 3  Excess ${{\mathit \Xi}^{-}}{{\mathit \ell}^{-}}$, decay lengths.

References

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