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${{\mathit \Xi}^{0}}$ MEAN LIFE

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S023T

VALUE ($ 10^{-10} $ s) EVTS DOCUMENT ID TECN  COMMENT $\bf{ 2.90 \pm0.09}$ OUR AVERAGE $2.83$ $\pm0.16$ 6300 1 ZECH 1977 SPEC Neutral hyperon beam $2.88$ ${}^{+0.21}_{-0.19}$ 652 BALTAY 1974 HBC 1.75 ${\mathrm {GeV/}}\mathit c$ ${{\mathit K}^{-}}{{\mathit p}}$ $2.90$ ${}^{+0.32}_{-0.27}$ 157 2 MAYEUR 1972 HLBC 2.1 ${\mathrm {GeV/}}\mathit c$ ${{\mathit K}^{-}}$ $3.07$ ${}^{+0.22}_{-0.20}$ 340 DAUBER 1969 HBC $3.0$ $\pm0.5$ 80 PJERROU 1965 B HBC $2.5$ ${}^{+0.4}_{-0.3}$ 101 HUBBARD 1964 HBC $3.9$ ${}^{+1.4}_{-0.8}$ 24 JAUNEAU 1963 FBC • • We do not use the following data for averages, fits, limits, etc. • • $3.5$ ${}^{+1.0}_{-0.8}$ 45 CARMONY 1964 B HBC See PJERROU 1965B 1  The ZECH 1977 result is ${\mathit \tau}_{{{\mathit \Xi}^{0}}}$ = $\lbrack{}2.77–({\mathit \tau}_{{{\mathit \Lambda}}}–2.69)\rbrack{}{\times }10^{-10}$ s, in which we use ${\mathit \tau}_{{{\mathit \Lambda}}}$ = $2.63 \times 10^{-10}$ s. 2  The MAYEUR 1972 value is modified by the erratum.

References:

ZECH 1977 NP B124 413 A Measurement of the Lifetimes of ${{\mathit \Xi}^{0}}$ and ${{\mathit \Lambda}}$ Hyperons BALTAY 1974 PR D9 49 Properties of ${{\mathit \Xi}^{-}}$ and ${{\mathit \Xi}^{0}}$ Hyperons MAYEUR 1972 NP B47 333 A Measurement of the ${{\mathit \Xi}}$ Hyperon Lifetimes and $\alpha $ Parameters Also NP B53 268 (erratum) Erratum: MAYEUR 1972 A Measurement of the ${{\mathit \Xi}}$ Hyperon Lifetimes and $\alpha $ Parameters DAUBER 1969 PR 179 1262 Production and Decay of Cascade Hyperons PJERROU 1965B PRL 14 275 Electromagnetic ${{\mathit \Xi}^{*}{(1530)}}$ Mass Difference Also Thesis Properties of ${}^{\text{-}}$ and ${}^{0}$ Hyperons CARMONY 1964B PRL 12 482 Properties of ${{\mathit \Xi}}$ Hyperons HUBBARD 1964 PR 135 B183 Lifetimes of the ${{\mathit \Xi}^{-}}$ and ${{\mathit \Xi}^{0}}$ Hyperons JAUNEAU 1963 PL 4 49 Direct Measurement of ${{\mathit \Xi}^{-}}$ and ${{\mathit \Xi}^{0}}$ Mean Lives Also Siena Conf. 1 1 Siena Conf. 1963