#### ${{\mathit \Xi}_{{b}}{(6227)}^{-}}$ MASS

VALUE (MeV) DOCUMENT ID TECN  COMMENT
$6227.9 \pm0.9 \pm0.2$ 1
 2021
LHCB ${{\mathit p}}{{\mathit p}}$ at 7, 8, 13 TeV
• • We do not use the following data for averages, fits, limits, etc. • •
$6226.9$ $\pm2.0$ $\pm0.4$ 2, 3
 2018 H
LHCB Repl. by AAIJ 2021
 1 AAIJ 2021 measures $\mathit m({{\mathit \Xi}_{{b}}{(6227)}^{-}}$) $−$ $\mathit m({{\mathit \Lambda}_{{b}}^{0}}$) = $608.3$ $\pm0.8$ $\pm0.4$ MeV. We have adjusted the measurement to our best value of $\mathit m({{\mathit \Lambda}_{{b}}^{0}}$) = $5619.60$ $\pm0.17$ (MeV). Our first error is their experiment's error and our second error is the systematic error from using our best values.
 2 Uses ${{\mathit \Lambda}_{{b}}^{0}}{{\mathit K}^{-}}$ and ${{\mathit \Xi}_{{b}}^{0}}{{\mathit \pi}^{-}}$ modes.
 3 Measures mass difference m(${{\mathit \Xi}_{{b}}{(6227)}^{-}}$) $−$ m(${{\mathit \Lambda}_{{b}}^{0}}$) = $607.3$ $\pm2.0$ $\pm0.3$ MeV and uses m(${{\mathit \Lambda}_{{b}}^{0}}$) = $5619.58$ $\pm0.17$ MeV.
References:
 AAIJ 2021
PR D103 012004 Observation of a new $\Xi_b^0$ state
 AAIJ 2018H
PRL 121 072002 Observation of a new $\Xi_b^-$ resonance