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

VALUE ($10^{-10}$ s) EVTS DOCUMENT ID TECN  COMMENT
 $\bf{ 2.90 \pm0.09}$ OUR AVERAGE
$2.83$ $\pm0.16$ 6300 1
 1977
SPEC Neutral hyperon beam
$2.88$ ${}^{+0.21}_{-0.19}$ 652
 1974
HBC 1.75 ${\mathrm {GeV/}}\mathit c$ ${{\mathit K}^{-}}{{\mathit p}}$
$2.90$ ${}^{+0.32}_{-0.27}$ 157 2
 1972
HLBC 2.1 ${\mathrm {GeV/}}\mathit c$ ${{\mathit K}^{-}}$
$3.07$ ${}^{+0.22}_{-0.20}$ 340
 1969
HBC
$3.0$ $\pm0.5$ 80
 1965 B
HBC
$2.5$ ${}^{+0.4}_{-0.3}$ 101
 1964
HBC
$3.9$ ${}^{+1.4}_{-0.8}$ 24
 1963
FBC
• • We do not use the following data for averages, fits, limits, etc. • •
$3.5$ ${}^{+1.0}_{-0.8}$ 45
 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