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${{\mathit \Omega}^{-}}$ MEAN LIFE

INSPIRE   PDGID:

S024T

Measurements with an error $>$ $0.1 \times 10^{-10}$ s have been omitted. The fit assumes the ${{\mathit \Omega}^{-}}$ and ${{\overline{\mathit \Omega}}^{+}}$ mean lives are the same, and averages them together.

VALUE ($ 10^{-10} $ s) EVTS DOCUMENT ID TECN  COMMENT $\bf{ 0.821 \pm0.011}$ OUR FIT $\bf{ 0.821 \pm0.011}$ OUR AVERAGE $0.817$ $\pm0.013$ $\pm0.018$ 6934 CHAN 1998 E756 ${{\mathit p}}{}^{}\mathrm {Be}$, 800 GeV $0.811$ $\pm0.037$ 1096 LUK 1988 SPEC ${{\mathit p}}{}^{}\mathrm {Be}$ 400 GeV $0.823$ $\pm0.013$ 12k BOURQUIN 1984 SPEC SPS hyperon beam • • We do not use the following data for averages, fits, limits, etc. • • $0.822$ $\pm0.028$ 2437 BOURQUIN 1979 B SPEC See BOURQUIN 1984

References:

CHAN 1998 PR D58 072002 Measurement of the Properties of the ${{\overline{\mathit \Omega}}^{+}}$ and ${{\mathit \Omega}^{-}}$ Hyperons LUK 1988 PR D38 19 New Measurement of Properties of ${{\mathit \Omega}^{-}}$ Hyperon BOURQUIN 1984 NP B241 1 Measurement of ${{\mathit \Omega}^{-}}$ Decay Properties in the CERN SPS Hyperon Beam Also PL 87B 297 A Measurement of the ${{\mathit \Omega}^{-}}$ Lifetime BOURQUIN 1979B PL 88B 192 First Measurement of the ${{\mathit \Omega}^{-}}$ Decay Branching Ratios