${{\mathit \eta}{(1405)}}$ MASS

${{\mathit K}}{{\overline{\mathit K}}}{{\mathit \pi}}$ MODE (unresolved)

INSPIRE   JSON  (beta) PDGID:
M027M6
VALUE (MeV) EVTS DOCUMENT ID TECN  COMMENT
• • We do not use the following data for averages, fits, limits, etc. • •
$1452.7$ $\pm3.3$ 191 1, 2
ABLIKIM
2013M
 BES3 ${{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit \omega}}{{\mathit K}}{{\mathit K}}{{\mathit \pi}}$
$1437.6$ $\pm3.2$ $249$ $\pm35$ 1, 2
ABLIKIM
2008E
 BES2 ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \omega}}{{\mathit K}_S^0}$ ${{\mathit K}^{+}}{{\mathit \pi}^{-}}$ + c.c.
$1445.9$ $\pm5.7$ $62$ $\pm18$ 1, 2
ABLIKIM
2008E
 BES2 ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \omega}}{{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \pi}^{0}}$
$1442$ $\pm10$ 410 1
BAI
1998C
 BES ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \pi}^{0}}$
$1445$ $\pm8$ 693 1
AUGUSTIN
1990
DM2 ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit K}_S^0}$ ${{\mathit K}^{\pm}}{{\mathit \pi}^{\mp}}$
$1433$ $\pm8$ 296 1
AUGUSTIN
1990
DM2 ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \pi}^{0}}$
$1413$ $\pm8$ 500 1
DUCH
1989
ASTE ${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit K}^{\pm}}{{\mathit \pi}^{\mp}}{{\mathit K}^{0}}$
$1453$ $\pm7$ 170 1
RATH
1989
MPS 21.4 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit K}_S^0}$ ${{\mathit \pi}^{0}}{{\mathit n}}$
$1419$ $\pm1$ 8800 1
BIRMAN
1988
MPS 8 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\overline{\mathit K}}^{0}}{{\mathit \pi}^{-}}{{\mathit n}}$
$1424$ $\pm3$ 620 1
REEVES
1986
SPEC 6.6 ${{\mathit p}}$ ${{\overline{\mathit p}}}$ $\rightarrow$ ${{\mathit K}}{{\overline{\mathit K}}}{{\mathit \pi}}$ X
$1421$ $\pm2$ 1
CHUNG
1985
SPEC 8 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit K}}{{\overline{\mathit K}}}{{\mathit \pi}}{{\mathit n}}$
$1440$ ${}^{+20}_{-15}$ 174 1
EDWARDS
1982E
 CBAL ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \pi}^{0}}$
$1440$ ${}^{+10}_{-15}$ 1
SCHARRE
1980
MRK2 ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit K}_S^0}$ ${{\mathit K}^{\pm}}{{\mathit \pi}^{\mp}}$
$1425$ $\pm7$ 800 1, 3
BAILLON
1967
HBC 0 ${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit K}}{{\overline{\mathit K}}}{{\mathit \pi}}{{\mathit \pi}}{{\mathit \pi}}$
1  These experiments identify only one pseudoscalar in the $1400 - 1500$ range. Data could also refer to ${{\mathit \eta}{(1475)}}$.
2  Systematic uncertainty not evaluated.
3  From best fit of ${}^{}0{}^{-+}$ partial wave , 50$\%$ ${{\mathit K}^{*}{(892)}}{{\mathit K}}$ , 50$\%$ ${{\mathit a}_{{{0}}}{(980)}}{{\mathit \pi}}$.
References