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STRANGE MESONS ($\mathit S$ = $\pm1$, $\mathit C$ = $\mathit B$ = 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   JSON PDGID: M146

${{\mathit K}_{{{2}}}{(1820)}}$ $I(J^P)$ = $1/2(2^{-})$

See our mini-review in the 2004 edition of this $\mathit Review$ (PDG 2004) under ${{\mathit K}_{{{2}}}{(1770)}}$.

${{\mathit K}_{{{2}}}{(1820)}}$ MASS $1819$ $\pm12$ MeV

${{\mathit K}_{{{2}}}{(1820)}}$ WIDTH $264$ $\pm34$ MeV

${{\mathit K}_{{{2}}}{(1820)}}$ DECAY MODES

Mode   Fraction ($\Gamma_i$ / $\Gamma$) Scale Factor/ Conf. Level P(MeV/c)   $\Gamma_{1}$ ${{\mathit K}}{{\mathit \pi}}{{\mathit \pi}}$ seen 819   $\Gamma_{2}$ ${{\mathit K}_{{{2}}}^{*}{(1430)}}{{\mathit \pi}}$ seen 328   $\Gamma_{3}$ ${{\mathit K}^{*}{(892)}}{{\mathit \pi}}$ seen 683   $\Gamma_{4}$ ${{\mathit K}}{{\mathit f}_{{{2}}}{(1270)}}$ seen 191   $\Gamma_{5}$ ${{\mathit K}}{{\mathit \omega}}$ seen 640   $\Gamma_{6}$ ${{\mathit K}}{{\mathit \phi}}$ seen 483