# ${{\boldsymbol \Lambda}{(1690)}}$ MASS INSPIRE search

VALUE (MeV) DOCUMENT ID TECN  COMMENT
$\bf{ 1685\text{ to }1695\text{ }(\approx1690) }$ OUR ESTIMATE
$1689$ $\pm3$
 2019
DPWA ${{\overline{\mathit K}}}{{\mathit N}}$ multichannel
$1691$ $\pm3$
 2013 A
DPWA ${{\overline{\mathit K}}}{{\mathit N}}$ multichannel
$1695.7$ $\pm2.6$
 1985
DPWA ${{\mathit K}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \Sigma}}{{\mathit \pi}}$
$1690$ $\pm5$
 1980
DPWA ${{\overline{\mathit K}}}$ ${{\mathit N}}$ $\rightarrow$ ${{\overline{\mathit K}}}{{\mathit N}}$
$1692$ $\pm5$
 1978
DPWA ${{\overline{\mathit K}}}$ ${{\mathit N}}$ $\rightarrow$ ${{\overline{\mathit K}}}{{\mathit N}}$
$1690$ $\pm3$
 1976 B
DPWA ${{\mathit K}^{-}}$ ${{\mathit N}}$ $\rightarrow$ ${{\mathit \Sigma}}{{\mathit \pi}}$
$1689$ $\pm1$
 1974
DPWA ${{\mathit K}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \Sigma}}{{\mathit \pi}}$
• • • We do not use the following data for averages, fits, limits, etc. • • •
$1690$ $\pm5$
 1977
DPWA ${{\overline{\mathit K}}}{{\mathit N}}$ multichannel
$1687$ or $1689$ 1
 1977
DPWA ${{\overline{\mathit K}}}{{\mathit N}}$ multichannel
$1692$ $\pm4$
 1976
DPWA Isospin-0 total $\sigma{}$
1  The two MARTIN 1977 values are from a T-matrix pole and from a Breit-Wigner fit. Another ${\mathit D}_{\mathrm 03}{{\mathit \Lambda}}$ at 1966 MeV is also suggested by MARTIN 1977 , but is very uncertain.
References:
 SARANTSEV 2019
EPJ A55 180 Hyperon II: Properties of excited hyperons
 ZHANG 2013A
PR C88 035205 Multichannel Parametrization of ${{\mathit K}^{-}}{{\mathit N}}$ Scattering Amplitudes and Extraction of Resonance Parameters
 KOISO 1985
NP A433 619 Search for the ${\mathit P}_{\mathrm 11}{{\mathit \Sigma}{(1660)}}$ Resonance in the Reactions ${{\mathit K}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \Sigma}^{\pm}}{{\mathit \pi}^{\mp}}$ in the Momentum Range 597 to 888 ${\mathrm {MeV}}/\mathit c$
 GOPAL 1980
Toronto Conf. 159 S = -1 Baryons: an Experimental Review
 ALSTON-GARNJOST 1978
PR D18 182 Partial Wave Analysis of the ${{\overline{\mathit K}}}{{\mathit N}}$ System from 360 to 1320 ${\mathrm {MeV}}/\mathit c$
 GOPAL 1977
NP B119 362 Partial Wave Analyses of ${{\overline{\mathit K}}}{{\mathit N}}$ Two Body Reactions between 1480 and 2170 MeV
 MARTIN 1977
NP B127 349 ${{\overline{\mathit K}}}{{\mathit N}}$ Interactions in the Resonance Region. 3. Resonance Spectra
 CARROLL 1976
PRL 37 806 Structures in ${{\mathit K}^{-}}$ Nucleon Total Cross Sections below 1.1 ${\mathrm {GeV/}}\mathit c$
 HEPP 1976B
PL 65B 487 New Data on the Reaction ${{\mathit K}^{-}}$ ${{\mathit n}}$ $\rightarrow$ ( ${{\mathit \Sigma}}{{\mathit \pi}}){}^{-}$ and a Partial Wave Analysis of ${{\overline{\mathit K}}}$ ${{\mathit N}}$ $\rightarrow$ ${{\mathit \Sigma}}{{\mathit \pi}}$ in the Energy Range $1520 - 1745$ MeV
 KANE 1974
LBL-2452 LBL-2452