${{\mathit K}_{{{2}}}^{*}{(1980)}}$ MASS

INSPIRE   JSON  (beta) PDGID:
M104M
VALUE (MeV) EVTS DOCUMENT ID TECN CHG  COMMENT
$\bf{ 1990 {}^{+60}_{-50}}$ OUR AVERAGE  Error includes scale factor of 2.8.  See the ideogram below.
$2046$ ${}^{+17}_{-16}$ ${}^{+67}_{-15}$ 1.8k 1
ABLIKIM
2020F
 BES3 ${{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \eta}}$
$1868$ $\pm8$ ${}^{+40}_{-57}$ 183k
ABLIKIM
2019AQ
 BES $\pm{}$ ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \pi}^{0}}$
$1973$ $\pm8$ $\pm25$
ASTON
1987
LASS 0 11 ${{\mathit K}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\overline{\mathit K}}^{0}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit n}}$
• • We do not use the following data for averages, fits, limits, etc. • •
$2073$ $\pm94$ ${}^{+245}_{-240}$ 4289 2, 3
AAIJ
2017C
 LHCB ${{\mathit B}^{+}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \phi}}{{\mathit K}^{+}}$
$2020$ $\pm20$
TIKHOMIROV
2003
SPEC 40.0 ${{\mathit \pi}^{-}}$ ${}^{}\mathrm {C}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit K}_S^0}$ ${{\mathit K}_L^0}$ X
$1978$ $\pm40$ 241
BIRD
1989
LASS - 11 ${{\mathit K}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\overline{\mathit K}}^{0}}{{\mathit \pi}^{-}}{{\mathit p}}$
1  Seen in ${{\mathit \psi}{(2S)}}$ decay with branching ratio ${{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit K}^{\pm}}{{\mathit X}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \eta}}$ = ($7.0$ $\pm0.5$ ${}^{+3.7}_{-0.6}$) $ \times 10^{-6}$.
2  From an amplitude analysis of the decay ${{\mathit B}^{+}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \phi}}{{\mathit K}^{+}}$ with a significance of 5.4 $\sigma $.
3  A reanalysis by AAIJ 2021E using a larger data sample did not confirm this measurement, the new result having a significance of only 1.6 $\sigma $.

           ${{\mathit K}_{{{2}}}^{*}{(1980)}}$ MASS (MeV)
References