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${{\mathit \Lambda}{(1820)}}$ MASS

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B039M

VALUE (MeV) DOCUMENT ID TECN  COMMENT $\bf{ 1815\text{ to }1825\text{ }(\approx1820) }$ OUR ESTIMATE $1822$ $\pm4$ SARANTSEV 2019 DPWA ${{\overline{\mathit K}}}{{\mathit N}}$ multichannel $1823.5$ $\pm0.8$ ZHANG 2013 A DPWA ${{\overline{\mathit K}}}{{\mathit N}}$ multichannel $1823$ $\pm3$ GOPAL 1980 DPWA ${{\overline{\mathit K}}}$ ${{\mathit N}}$ $\rightarrow$ ${{\overline{\mathit K}}}{{\mathit N}}$ $1819$ $\pm2$ ALSTON-GARNJO.. 1978 DPWA ${{\overline{\mathit K}}}$ ${{\mathit N}}$ $\rightarrow$ ${{\overline{\mathit K}}}{{\mathit N}}$ $1821$ $\pm2$ KANE 1974 DPWA ${{\mathit K}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \Sigma}}{{\mathit \pi}}$ • • We do not use the following data for averages, fits, limits, etc. • • $1830$ DECLAIS 1977 DPWA ${{\overline{\mathit K}}}$ ${{\mathit N}}$ $\rightarrow$ ${{\overline{\mathit K}}}{{\mathit N}}$ $1822$ $\pm2$ GOPAL 1977 DPWA ${{\overline{\mathit K}}}{{\mathit N}}$ multichannel $1817$ or $1819$ 1 MARTIN 1977 DPWA ${{\overline{\mathit K}}}{{\mathit N}}$ multichannel 1  The two MARTIN 1977 values are from a T-matrix pole and from a Breit-Wigner fit.

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