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

${{\boldsymbol K}_{{2}}{(2250)}}$ $I(J^P)$ = $1/2(2^{-})$

This entry contains various peaks in strange meson systems reported in the 2150$-$2260 MeV region, as well as enhancements seen in the antihyperon-nucleon system, either in the mass spectra or in the $\mathit J{}^{P} = 2{}^{-}$ wave.

${{\mathit K}_{{2}}{(2250)}}$ MASS

$2247 \pm17$ MeV

${{\mathit K}_{{2}}{(2250)}}$ WIDTH

$180 \pm30$ MeV (S = 1.4)

Decay Modes

$\Gamma_{1}$

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

1051

$\Gamma_{2}$

${{\mathit K}}{{\mathit f}_{{2}}{(1270)}}$

649

$\Gamma_{3}$

${{\mathit K}^{*}{(892)}}{{\mathit f}_{{0}}{(980)}}$

613

$\Gamma_{4}$

${{\mathit p}}{{\overline{\mathit \Lambda}}}$

454