${{\mathit \Sigma}{(1690)}}$ MASS (PRODUCTION EXPERIMENTS)

INSPIRE   JSON  (beta) PDGID:
B058M
VALUE (MeV) EVTS DOCUMENT ID TECN CHG  COMMENT
$\bf{ \approx1690}$ OUR ESTIMATE
$1698$ $\pm20$ 70 1
GODDARD
1979
HBC + ${{\mathit \pi}^{+}}{{\mathit p}}$ 10.3 ${\mathrm {GeV/}}\mathit c$
$1707$ $\pm20$ 40 2
GODDARD
1979
HBC + ${{\mathit \pi}^{+}}{{\mathit p}}$ 10.3 ${\mathrm {GeV/}}\mathit c$
$1698$ $\pm20$ 15
ADERHOLZ
1969
HBC + ${{\mathit \pi}^{+}}{{\mathit p}}$ 8 ${\mathrm {GeV/}}\mathit c$
$1682$ $\pm2$ 46
BLUMENFELD
1969
HBC + ${{\mathit K}_L^0}$ ${{\mathit p}}$
$1700$ $\pm20$
MOTT
1969
HBC + ${{\mathit K}^{-}}{{\mathit p}}$ 5.5 ${\mathrm {GeV/}}\mathit c$
$1694$ $\pm24$ 60 3
PRIMER
1968
HBC + ${{\mathit K}^{-}}{{\mathit p}}$ 4.6$-$5 ${\mathrm {GeV/}}\mathit c$
$1700$ $\pm6$ 4
SIMS
1968
HBC - ${{\mathit K}^{-}}$ ${{\mathit N}}$ $\rightarrow$ ${{\mathit \Lambda}}{{\mathit \pi}}{{\mathit \pi}}$
$1715$ $\pm12$ 30
COLLEY
1967
HBC + ${{\mathit K}^{-}}{{\mathit p}}$ 6 ${\mathrm {GeV/}}\mathit c$
1  From ${{\mathit \pi}^{+}}$ ${{\mathit p}}$ $\rightarrow$ ( ${{\mathit \Lambda}}{{\mathit \pi}^{+}}$) ${{\mathit K}^{+}}$. $\mathit J$ $>{}^{}1/2{}^{}$ is not required by the data.
2  From ${{\mathit \pi}^{+}}$ ${{\mathit p}}$ $\rightarrow$ ( ${{\mathit \Lambda}}{{\mathit \pi}^{+}}$) ( ${{\mathit K}}{{\mathit \pi}}$) ${}^{+}$. $\mathit J$ $>{}^{}1/2{}^{}$ is indicated, but large background precludes a definite conclusion.
3  See the ${{\mathit \Sigma}{(1670)}}$ Listings. AGUILAR-BENITEZ 1970B with three times the data of PRIMER 1968 find no evidence for the ${{\mathit \Sigma}{(1690)}}$.
4  This analysis, which is difficult and requires several assumptions and shows no unambiguous ${{\mathit \Sigma}{(1690)}}$ signal, suggests $\mathit J{}^{P} = 5/2{}^{+}$. Such a state would lead all previously known ${{\mathit Y}^{*}}$ trajectories.
References