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

INSPIRE   JSON  (beta) PDGID:
M027MX
VALUE (MeV)
$\bf{ 1408.7 {}^{+2.0}_{-1.2}}$ OUR AVERAGE includes data from ${{\mathit \eta}}{{\mathit \pi}}{{\mathit \pi}}$ MODE, ${{\mathit K}}{{\overline{\mathit K}}}{{\mathit \pi}}$ MODE (${{\mathit a}_{{{0}}}{(980)}}{{\mathit \pi}}$ or direct ${{\mathit K}}{{\overline{\mathit K}}}{{\mathit \pi}}$)  Error includes scale factor of 2.2.  See the ideogram below.

           ${{\mathit \eta}{(1405)}}$ mass (MeV)