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${{\mathit \Omega}_{{{b}}}^{-}}$ MASS

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S063M

VALUE (MeV) DOCUMENT ID TECN  COMMENT $\bf{ 6045.8 \pm0.8}$ OUR AVERAGE $6045.7$ $\pm0.5$ $\pm0.6$ 1 AAIJ 2023 BD LHCB ${{\mathit p}}{{\mathit p}}$ at 7, 8, 13 TeV $6047.5$ $\pm3.8$ $\pm0.6$ 2 AALTONEN 2014 B CDF ${{\mathit p}}{{\overline{\mathit p}}}$ at 1.96 TeV • • We do not use the following data for averages, fits, limits, etc. • • $6045.9$ $\pm0.5$ $\pm0.6$ 3 AAIJ 2023 BD LHCB ${{\mathit p}}{{\mathit p}}$ at 7, 8, 13 TeV $6044.30$ $\pm1.20$ $\pm1.12$ 4 AAIJ 2021 AC LHCB Repl. by AAIJ 2023BD $6045.1$ $\pm3.2$ $\pm0.8$ 5 AAIJ 2016 O LHCB Repl. by AAIJ 2023BD $6046.0$ $\pm2.2$ $\pm0.5$ 6 AAIJ 2013 AV LHCB Repl. by AAIJ 2023BD $6054.4$ $\pm6.8$ $\pm0.9$ 7 AALTONEN 2009 AP CDF Repl. by AALTONEN 2014B $6165$ $\pm10$ $\pm13$ 8 ABAZOV 2008 AL D0 ${{\mathit p}}{{\overline{\mathit p}}}$ at 1.96 TeV 1  Combines measurement using ${{\mathit \Omega}_{{{b}}}^{-}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \Omega}^{-}}$ decays with results from AAIJ 2016O and AAIJ 2021AC taking into account correlations amongst systematic uncertainties. Uses ${{\mathit \Xi}_{{{b}}}^{-}}$ mass $5797.33$ $\pm0.24$ $\pm29$ MeV from AAIJ 2021. 2  Uses ${{\mathit \Omega}_{{{b}}}^{-}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \Omega}^{-}}$ and ${{\mathit \Omega}_{{{c}}}^{0}}{{\mathit \pi}^{-}}$ decays, with the first evidence for ${{\mathit \Omega}_{{{b}}}^{-}}$ $\rightarrow$ ${{\mathit \Omega}_{{{c}}}^{0}}{{\mathit \pi}^{-}}$ at 3.3 $\sigma $ significance. 3  Uses ${{\mathit \Omega}_{{{b}}}^{-}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \Omega}^{-}}$ decays. 4  Uses ${{\mathit \Omega}_{{{b}}}^{-}}$ $\rightarrow$ ${{\mathit \Xi}_{{{c}}}^{+}}{{\mathit K}^{-}}{{\mathit \pi}^{-}}$ and ${{\mathit \Xi}_{{{c}}}^{+}}$ $\rightarrow$ ${{\mathit p}}{{\mathit K}^{-}}{{\mathit \pi}^{+}}$ decays. Reports the value of $6044.3$ $\pm1.2$ $\pm1.1$ ${}^{+0.19}_{-0.22}$ MeV where the last uncertainty is due to the mass of ${{\mathit \Xi}_{{{c}}}^{+}}$. We have combined the two systematic uncertainties in quadrature. 5  Reconstructed in ${{\mathit \Omega}_{{{b}}}^{-}}$ $\rightarrow$ ${{\mathit \Omega}_{{{c}}}^{0}}{{\mathit \pi}^{-}}$, ${{\mathit \Omega}_{{{c}}}^{0}}$ $\rightarrow$ ${{\mathit p}}{{\mathit K}^{-}}{{\mathit K}^{-}}{{\mathit \pi}^{+}}$ decays. Reference ${{\mathit \Xi}_{{{b}}}^{-}}$ mass $5797.72$ $\pm0.6$ MeV from AAIJ 2014B. 6  Measured in ${{\mathit \Omega}_{{{b}}}^{-}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \Omega}^{-}}$ with $19$ $\pm5$ events. 7  Observed in ${{\mathit \Omega}_{{{b}}}^{-}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \Omega}^{-}}$ decays with $16$ ${}^{+6}_{-4}$ candidates, a significance of 5.5 sigma from a combined mass-lifetime fit. 8  Observed in ${{\mathit \Omega}_{{{b}}}^{-}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \Omega}^{-}}$ decays with $17.8$ $\pm4.9$ $\pm0.8$ candidates, a significance of 5.4 sigma.

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