# ${{\boldsymbol \Sigma}{(1690)}}$ MASS (PRODUCTION EXPERIMENTS) INSPIRE search

VALUE (MeV) EVTS DOCUMENT ID TECN CHG  COMMENT
$\bf{ \approx1690}$ OUR ESTIMATE
$1698$ $\pm20$ 70 1
 1979
HBC + ${{\mathit \pi}^{+}}{{\mathit p}}$ 10.3 ${\mathrm {GeV/}}\mathit c$
$1707$ $\pm20$ 40 2
 1979
HBC + ${{\mathit \pi}^{+}}{{\mathit p}}$ 10.3 ${\mathrm {GeV/}}\mathit c$
$1698$ $\pm20$ 15
 1969
HBC + ${{\mathit \pi}^{+}}{{\mathit p}}$ 8 ${\mathrm {GeV/}}\mathit c$
$1682$ $\pm2$ 46
 1969
HBC + ${{\mathit K}_L^0}$ ${{\mathit p}}$
$1700$ $\pm20$
 1969
HBC + ${{\mathit K}^{-}}{{\mathit p}}$ 5.5 ${\mathrm {GeV/}}\mathit c$
$1694$ $\pm24$ 60 3
 1968
HBC + ${{\mathit K}^{-}}{{\mathit p}}$ 4.6$-$5 ${\mathrm {GeV/}}\mathit c$
$1700$ $\pm6$ 4
 1968
HBC - ${{\mathit K}^{-}}$ ${{\mathit N}}$ $\rightarrow$ ${{\mathit \Lambda}}{{\mathit \pi}}{{\mathit \pi}}$
$1715$ $\pm12$ 30
 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:
 GODDARD 1979
PR D19 1350 ${{\mathit Y}^{*}}{{\mathit K}}$ and ${{\mathit Y}^{*}}{{\mathit K}^{*}}$ Production in ${{\mathit \pi}^{+}}{{\mathit p}}$ Interactions at 10.3 ${\mathrm {GeV/}}\mathit c$
NP B11 259 Strange Particle Production in 8 ${\mathrm {GeV/}}\mathit c$ Positive Pion Interactions in Hydrogen
PL 29B 58 Formation of the ${{\mathit Y}_{{1}}^{*}{(1616)}}$ and ${{\mathit Y}_{{1}}^{*}{(1700)}}$ in ${{\mathit K}_L^0}$ ${{\mathit p}}$ Interactions
PR 177 1966 Study of ${{\mathit K}^{-}}{{\mathit p}}$ Interactions at 4.1 and 5.5 ${\mathrm {GeV/}}\mathit c$: Final States with Two Charged Particles and a Visible ${{\mathit \Lambda}}$
PRL 20 610 Study of ${{\mathit Y}_{{1}}^{*}{(1660)}}$ and ${{\mathit Y}_{{1}}^{*}{(1690)}}$ Production in ${{\mathit K}^{-}}{{\mathit p}}$ Interactions
PRL 21 1413 Partial Wave Analysis of the Sequential Reaction ${{\mathit K}^{-}}$ ${{\mathit n}}$ $\rightarrow$ ${{\mathit Y}_{{1}}^{*}{(1385)}}{{\mathit \pi}}$ $\rightarrow$ ${{\mathit \Lambda}}{{\mathit \pi}}{{\mathit \pi}}$ in the Center-of-Mass Energy Range 1600-1740 MeV
PL 24B 489 Production of a ${{\mathit Y}_{{1}}^{*}{(1700)}}$ in ${{\mathit K}^{-}}{{\mathit p}}$ Collisions at 6 ${\mathrm {GeV/}}\mathit c$