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LIGHT UNFLAVORED MESONS ($\mathit S$ = $\mathit C$ = $\mathit B$ = 0) For $\mathit I = 1$ (${{\mathit \pi}}$, ${{\mathit b}}$, ${{\mathit \rho}}$, ${{\mathit a}}$): ${\mathit {\mathit u}}$ ${\mathit {\overline{\mathit d}}}$, (${\mathit {\mathit u}}$ ${\mathit {\overline{\mathit u}}}−{\mathit {\mathit d}}$ ${\mathit {\overline{\mathit d}}})/\sqrt {2 }$, ${\mathit {\mathit d}}$ ${\mathit {\overline{\mathit u}}}$; for $\mathit I = 0$ (${{\mathit \eta}}$, ${{\mathit \eta}^{\,'}}$, ${{\mathit h}}$, ${{\mathit h}^{\,'}}$, ${{\mathit \omega}}$, ${{\mathit \phi}}$, ${{\mathit f}}$, ${{\mathit f}^{\,'}}$): ${\mathit {\mathit c}}_{{\mathrm {1}}}({{\mathit u}}{{\overline{\mathit u}}}$ $+$ ${{\mathit d}}{{\overline{\mathit d}}}$) $+$ ${\mathit {\mathit c}}_{{\mathrm {2}}}({{\mathit s}}{{\overline{\mathit s}}}$)

INSPIRE   JSON PDGID: M067

${{\mathit \phi}{(1680)}}$ $I^G(J^{PC})$ = $0^-(1^{- -})$

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▸  exp ${{\mathit \phi}{(1680)}}$ MASS

${{\mathit e}^{+}}{{\mathit e}^{-}}$ PRODUCTION [1] $1680$ $\pm20$ MeV

${{\mathit p}}{{\overline{\mathit p}}}$ ANNIHILATION

▸  exp ${{\mathit \phi}{(1680)}}$ WIDTH

${{\mathit e}^{+}}{{\mathit e}^{-}}$ PRODUCTION [1] $150$ $\pm50$ MeV

${{\mathit p}}{{\overline{\mathit p}}}$ ANNIHILATION

${{\mathit \phi}{(1680)}}$ DECAY MODES

Mode   Fraction ($\Gamma_i$ / $\Gamma$) Scale Factor/ Conf. Level P(MeV/c)   $\Gamma_{1}$ ${{\mathit K}}{{\overline{\mathit K}}^{*}{(892)}}$ + c.c. seen 462   $\Gamma_{2}$ ${{\mathit K}_S^0}$ ${{\mathit K}}{{\mathit \pi}}$ seen 621   $\Gamma_{3}$ ${{\mathit K}}{{\overline{\mathit K}}}$ seen 680   $\Gamma_{4}$ ${{\mathit K}_L^0}$ ${{\mathit K}_S^0}$ 677   $\Gamma_{5}$ ${{\mathit e}^{+}}{{\mathit e}^{-}}$ seen 840   $\Gamma_{6}$ ${{\mathit \omega}}{{\mathit \pi}}{{\mathit \pi}}$ not seen 623   $\Gamma_{7}$ ${{\mathit \phi}}{{\mathit \pi}}{{\mathit \pi}}$ 482   $\Gamma_{8}$ ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ seen 544   $\Gamma_{9}$ ${{\mathit \eta}}{{\mathit \phi}}$ seen 290   $\Gamma_{10}$ ${{\mathit \eta}}{{\mathit \gamma}}$ seen 751   $\Gamma_{11}$ ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \pi}^{0}}$ 623   $\Gamma_{12}$ ${{\mathit f}_{{{2}}}^{\,'}{(1525)}}{{\mathit \gamma}}$ not seen 155

[1] Our estimate. See the Particle Listings for details.