${{\mathit \Xi}_{{{b}}}}$ 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
$\bf{ 1.57 \pm0.04}$ OUR AVERAGE  Error includes scale factor of 1.1.
$1.599$ $\pm0.041$ $\pm0.022$ 1
AAIJ
01BJ
 
LHCB ${{\mathit p}}{{\mathit p}}$ at 7, 8 TeV
$1.55$ ${}^{+0.10}_{-0.09}$ $\pm0.03$ 2
AAIJ
01T
 
LHCB ${{\mathit p}}{{\mathit p}}$ at 7, 8 TeV
$1.36$ $\pm0.15$ $\pm0.02$
AALTONEN
01B
 
CDF ${{\mathit p}}{{\overline{\mathit p}}}$ at 1.96 TeV
• • We do not use the following data for averages, fits, limits, etc. • •
$1.56$ ${}^{+0.27}_{-0.25}$ $\pm0.02$ 3
AALTONEN
00AP
 
CDF Repl. by AALTONEN 2014B
1  Reconstructed in ${{\mathit \Xi}_{{{b}}}^{-}}$ $\rightarrow$ ${{\mathit \Xi}_{{{c}}}^{0}}{{\mathit \pi}^{-}}$, ${{\mathit \Xi}_{{{c}}}^{0}}$ $\rightarrow$ ${{\mathit p}}{{\mathit K}^{-}}{{\mathit K}^{-}}{{\mathit \pi}^{+}}$ decays. Reference ${{\mathit \Lambda}_{{{b}}}^{0}}$ lifetime $1.479$ $\pm0.009$ $\pm0.010$ ps from AAIJ 2014U.
2  Measured in ${{\mathit \Xi}_{{{b}}}^{-}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \Xi}^{-}}$ decays.
3  Measured in ${{\mathit \Xi}_{{{b}}}^{-}}$ $\rightarrow$ ${{\mathit \Xi}^{-}}$ decays with $66$ ${}^{+14}_{-9}$ candidates.
References