${{\boldsymbol \Xi}_{{b}}^{-}}$ MASS

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

INSPIRE search
VALUE (MeV) DOCUMENT ID TECN  COMMENT
$\bf{ 177.46 \pm0.31}$ OUR AVERAGE  Error includes scale factor of 1.3.  See the ideogram below.
$177.71$ $\pm0.24$ $\pm0.16$ 1
AAIJ
2021
LHCB ${{\mathit p}}{{\mathit p}}$ at 7, 8, 13 TeV
$177.08$ $\pm0.47$ $\pm0.16$ 2
AAIJ
2017BE
LHCB ${{\mathit p}}{{\mathit p}}$ at 7, 8 TeV
$176.2$ $\pm0.9$ $\pm0.1$ 3
AAIJ
2013AV
LHCB ${{\mathit p}}{{\mathit p}}$ at 7 TeV
• • We do not use the following data for averages, fits, limits, etc. • •
$177.73$ $\pm0.33$ $\pm0.14$ 4
AAIJ
2017BE
LHCB ${{\mathit p}}{{\mathit p}}$ at 7, 8 TeV
$178.36$ $\pm0.46$ $\pm0.16$ 1, 5
AAIJ
2014BJ
LHCB Repl. by AAIJ 2021
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 decays ${{\mathit \Lambda}_{{b}}^{0}}$ $\rightarrow$ ${{\mathit \Lambda}_{{c}}^{+}}{{\mathit \pi}^{-}}$ were used.
2  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.
3  Reconstructed in ${{\mathit \Xi}_{{b}}^{-}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \Xi}^{-}}$ decays.
4  Combination of the original statistically independent measurements of AAIJ 2017BE and AAIJ 2014BJ taking into account correlation between systematic uncertainties.
5  Combined with AAIJ 2017BE.

           ${\mathit m}_{{{\mathit \Xi}_{{b}}^{-}}}–{\mathit m}_{{{\mathit \Lambda}_{{b}}^{0}}}$ (MeV)
References:
AAIJ 2021
PR D103 012004 Observation of a new $\Xi_b^0$ state
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