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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

${{\mathit f}_{{2}}{(1565)}}$ $I^G(J^{PC})$ = $0^+(2^{+ +})$

Seen mostly in antinucleon-nucleon annihilation. Needs confirmation in other channels. See the review on "Spectroscopy of Light Meson Resonances."

${{\mathit f}_{{2}}{(1565)}}$ MASS   $1542 \pm19$ MeV (S = 2.2)

${{\mathit f}_{{2}}{(1565)}}$ WIDTH   $122 \pm13$ MeV

${{\mathit f}_{{2}}{(1565)}}$ Decay Modes
Mode   Fraction ($\Gamma_i$ / $\Gamma$) Scale Factor/ Conf. Level P(MeV/c)   $\Gamma_{1}$ ${{\mathit \pi}}{{\mathit \pi}}$   seen 759   $\Gamma_{2}$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$   seen 758   $\Gamma_{3}$ ${{\mathit \pi}^{0}}{{\mathit \pi}^{0}}$   seen 759   $\Gamma_{4}$ ${{\mathit \rho}^{0}}{{\mathit \rho}^{0}}$   seen -1   $\Gamma_{5}$ 2 ${{\mathit \pi}^{+}}$2 ${{\mathit \pi}^{-}}$   seen 707   $\Gamma_{6}$ ${{\mathit \eta}}{{\mathit \eta}}$   seen 543   $\Gamma_{7}$ ${{\mathit \omega}}{{\mathit \omega}}$   seen -1   $\Gamma_{8}$ ${{\mathit K}}{{\overline{\mathit K}}}$   seen 592   $\Gamma_{9}$ ${{\mathit \gamma}}{{\mathit \gamma}}$   seen 771
FOOTNOTES