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

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S063M

VALUE (MeV) DOCUMENT ID TECN  COMMENT $\bf{ 6045.2 \pm1.2}$ OUR AVERAGE $6044.30$ $\pm1.20$ $\pm1.12$ 1 AAIJ 2021 AC LHCB ${{\mathit p}}{{\mathit p}}$ at 7, 8, 13 TeV $6045.1$ $\pm3.2$ $\pm0.8$ 2 AAIJ 2016 O LHCB ${{\mathit p}}{{\mathit p}}$ at 7, 8 TeV $6047.5$ $\pm3.8$ $\pm0.6$ 3 AALTONEN 2014 B CDF ${{\mathit p}}{{\overline{\mathit p}}}$ at 1.96 TeV $6046.0$ $\pm2.2$ $\pm0.5$ 4 AAIJ 2013 AV LHCB ${{\mathit p}}{{\mathit p}}$ at 7 TeV • • We do not use the following data for averages, fits, limits, etc. • • $6054.4$ $\pm6.8$ $\pm0.9$ 5 AALTONEN 2009 AP CDF Repl. by AALTONEN 2014B $6165$ $\pm10$ $\pm13$ 6 ABAZOV 2008 AL D0 ${{\mathit p}}{{\overline{\mathit p}}}$ at 1.96 TeV 1  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. 2  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. 3  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. 4  Measured in ${{\mathit \Omega}_{{b}}^{-}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \Omega}^{-}}$ with $19$ $\pm5$ events. 5  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. 6  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.

References:

AAIJ 2021AC PR D104 L091102 Observation of excited $\Omega_c^0$ baryons in $\Omega_b^- \to \Xi_c^+ K^-\pi^-$decays AAIJ 2016O PR D93 092007 Measurement of the Mass and Lifetime of the ${{\mathit \Omega}_{{b}}^{-}}$ Baryon AALTONEN 2014B PR D89 072014 Mass and Lifetime Measurements of Bottom and Charm Baryons in ${{\mathit p}}{{\overline{\mathit p}}}$ Collisions at $\sqrt {s }$ = 1.96 TeV AAIJ 2013AV PRL 110 182001 Measurement of the ${{\mathit \Lambda}_{{b}}^{0}}$, ${{\mathit \Xi}_{{b}}^{-}}$ and ${{\mathit \Omega}_{{b}}^{-}}$ Baryon Masses AALTONEN 2009AP PR D80 072003 Observation of the ${{\mathit \Omega}_{{b}}^{-}}$ Baryon and Measurement of the Properties of the ${{\mathit \Xi}_{{b}}^{-}}$ and ${{\mathit \Omega}_{{b}}^{-}}$ Baryons ABAZOV 2008AL PRL 101 232002 Observation of the Doubly Strange ${\mathit {\mathit b}}$ Baryon ${{\mathit \Omega}_{{b}}^{-}}$