# ${\boldsymbol m}_{{{\boldsymbol \Xi}_{{b}}^{-}}}–{\boldsymbol m}_{{{\boldsymbol \Lambda}_{{b}}^{0}}}$ INSPIRE search

VALUE (MeV) DOCUMENT ID TECN  COMMENT
$\bf{ 177.5 \pm0.5}$ OUR AVERAGE  Error includes scale factor of 1.6.
$177.73$ $\pm0.33$ $\pm0.14$ 1
 2017 BE
LHCB ${{\mathit p}}{{\mathit p}}$ at 7, 8 TeV
$176.2$ $\pm0.9$ $\pm0.1$ 2
 2013 AV
LHCB ${{\mathit p}}{{\mathit p}}$ at 7 TeV
• • • We do not use the following data for averages, fits, limits, etc. • • •
$177.08$ $\pm0.47$ $\pm0.16$ 3
 2017 BE
LHCB ${{\mathit p}}{{\mathit p}}$ at 7, 8 TeV
$178.36$ $\pm0.46$ $\pm0.16$ 4, 5
 2014 BJ
LHCB ${{\mathit p}}{{\mathit p}}$ at 7, 8 TeV
1  Combination of the original statistically independent measurements of AAIJ 2014BE and AAIJ 2017BJ taking into account correlation between systematic uncertainties.
2  Reconstructed in ${{\mathit \Xi}_{{b}}^{-}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \Xi}^{-}}$ decays.
3  Reconstructed in ${{\mathit \Xi}_{{b}}^{-}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \Lambda}}{{\mathit K}^{-}}$ decays. Reference decays ${{\mathit \Lambda}_{{b}}^{0}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \Lambda}}$ were used.
4  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 ${{\mathit \Lambda}_{{b}}^{0}}$ $\rightarrow$ ${{\mathit \Lambda}_{{c}}^{+}}{{\mathit \pi}^{-}}$ .
5  Combined with AAIJ 2017BE.
References:
 AAIJ 2017BE
PL B772 265 Observation of the ${{\mathit \Xi}_{{b}}^{-}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \Lambda}}{{\mathit K}^{-}}$ Decay
 AAIJ 2014BJ
PRL 113 242002 Precision Measurement of the Mass and Lifetime of the ${{\mathit \Xi}_{{b}}^{-}}$ Baryon
 AAIJ 2013AV
PRL 110 182001 Measurement of the ${{\mathit \Lambda}_{{b}}^{0}}$, ${{\mathit \Xi}_{{b}}^{-}}$ and ${{\mathit \Omega}_{{b}}^{-}}$ Baryon Masses