# ${{\boldsymbol \Xi}^{-}}$ MASS INSPIRE search

The fit uses the ${{\mathit \Xi}^{-}}$, ${{\overline{\mathit \Xi}}^{+}}$, and ${{\mathit \Xi}^{0}}$ masses and the ${{\mathit \Xi}}−{{\overline{\mathit \Xi}}^{+}}$ mass difference. It assumes that the ${{\mathit \Xi}^{-}}$ and ${{\overline{\mathit \Xi}}^{+}}$ masses are the same.
VALUE (MeV) EVTS DOCUMENT ID TECN  COMMENT
$\bf{ 1321.71 \pm0.07}$ OUR FIT
$1321.70$ $\pm0.08$ $\pm0.05$ $2478$ $\pm68$
 2006 E
DLPH from ${{\mathit Z}}$ decays
• • • We do not use the following data for averages, fits, limits, etc. • • •
$1321.46$ $\pm0.34$ 632
 1975
DBC 4.9 ${\mathrm {GeV/}}\mathit c$ ${{\mathit K}^{-}}{{\mathit d}}$
$1321.12$ $\pm0.41$ 268
 1972
HLBC
$1321.87$ $\pm0.51$ 195 1
 1970
HBC 5.5 ${\mathrm {GeV/}}\mathit c$ ${{\mathit K}^{-}}{{\mathit p}}$
$1321.67$ $\pm0.52$ 6
 1966
HBC 6.9 ${\mathrm {GeV/}}\mathit c$ ${{\overline{\mathit p}}}{{\mathit p}}$
$1321.4$ $\pm1.1$ 299
 1966
HBC
$1321.3$ $\pm0.4$ 149
 1965 B
HBC
$1321.1$ $\pm0.3$ 241 2
 1964
HBC
$1321.4$ $\pm0.4$ 517 2
 1963 D
FBC
$1321.1$ $\pm0.65$ 62 2
 1963
HBC
1  GOLDWASSER 1970 uses ${\mathit m}_{{{\mathit \Lambda}}}$ = 1115.58 MeV.
2  These masses have been increased 0.09 MeV because the ${{\mathit \Lambda}}$ mass increased.
References:
 ABDALLAH 2006E
PL B639 179 Masses, Lifetimes and Production Rates of ${{\mathit \Xi}^{-}}$ and ${{\overline{\mathit \Xi}}^{+}}$ at LEP 1
 DIBIANCA 1975
NP B98 137 Study of ${{\mathit \Xi}^{-}}$ and ${{\mathit \Omega}^{-}}$ Production from ${{\mathit K}^{-}}{{\mathit n}}$ and ${{\mathit K}^{-}}{{\mathit p}}$ Interactions at 4.93 ${\mathrm {GeV/}}\mathit c$
 WILQUET 1972
PL 42B 372 The Masses of the ${{\mathit \Xi}}$ Hyperons
 GOLDWASSER 1970
PR D1 1960 ${{\mathit \Xi}^{-}}$ Production in 5.5 GeV ${{\mathit K}^{-}}{{\mathit p}}$ Interactions
 CHIEN 1966
PR 152 1171 Hyperon and Antihyperon Production in ${{\overline{\mathit p}}}{{\mathit p}}$ Collisions at 7 ${\mathrm {GeV/}}\mathit c$
 LONDON 1966
PR 143 1034 ${{\mathit K}^{-}}{{\mathit p}}$ Interaction at 2.24 BeV
 PJERROU 1965B
PRL 14 275 Electromagnetic ${{\mathit \Xi}^{*}{(1530)}}$ Mass Difference
Siena Conf. 4 Direct Measurement of ${{\mathit \Xi}^{-}}$ and ${{\mathit \Xi}^{0}}$ Mean Lives
PL 4 360 Mass and Decay Parameters of ${{\mathit \Xi}^{-}}$ Particles