STRANGE MESONS
($\boldsymbol S$ = $\pm1$, $\boldsymbol C$ = $\boldsymbol B$ = 0)
${{\mathit K}^{+}}$ = ${\mathit {\mathit u}}$ ${\mathit {\overline{\mathit s}}}$, ${{\mathit K}^{0}}$ = ${\mathit {\mathit d}}$ ${\mathit {\overline{\mathit s}}}$, ${{\overline{\mathit K}}^{0}}$ = ${\mathit {\overline{\mathit d}}}$ ${\mathit {\mathit s}}$, ${{\mathit K}^{-}}$ = ${\mathit {\overline{\mathit u}}}$ ${\mathit {\mathit s}}$, similarly for ${{\mathit K}^{*}}$'s

INSPIRE search

${{\boldsymbol K}_{{1}}{(1650)}}$ $I(J^P)$ = $1/2(1^{+})$

This entry contains various peaks in strange meson systems ( ${{\mathit K}^{+}}{{\mathit \phi}}$ , ${{\mathit K}}{{\mathit \pi}}{{\mathit \pi}}$ ) reported in partial-wave analysis in the 1600$-$1900 mass region.

${{\mathit K}_{{1}}{(1650)}}$ MASS

$1672 \pm50$ MeV (S = 1.1)

${{\mathit K}_{{1}}{(1650)}}$ WIDTH

$158 \pm50$ MeV

Decay Modes

$\Gamma_{1}$

${{\mathit K}}{{\mathit \pi}}{{\mathit \pi}}$

737

$\Gamma_{2}$

${{\mathit K}}{{\mathit \phi}}$

338