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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: M013

${{\mathit f}_{{{2}}}^{\,'}{(1525)}}$ $I^G(J^{PC})$ = $0^+(2^{+ +})$

${{\mathit f}_{{{2}}}^{\,'}{(1525)}}$ MASS   $1517.3 \pm2.4$ MeV (S = 2.8)

PRODUCED BY PION BEAM

PRODUCED BY ${{\mathit K}^{\pm}}$ BEAM   $1518.0 \pm2.7$ MeV (S = 2.9)

PRODUCED IN ${{\mathit e}^{+}}{{\mathit e}^{-}}$ ANNIHILATION AND PARTICLE DECAYS   $1514 \pm4$ MeV (S = 3.6)

PRODUCED IN ${{\overline{\mathit p}}}{{\mathit p}}$ ANNIHILATION   $1512 \pm4$ MeV

CENTRAL PRODUCTION   $1515 \pm15$ MeV

PRODUCED IN ${{\mathit e}}{{\mathit p}}$ COLLISIONS   $1512 \pm3.2$ MeV

${{\mathit f}_{{{2}}}^{\,'}{(1525)}}$ WIDTH   $72 {}^{+7}_{-6}$ MeV

PRODUCED BY PION BEAM

PRODUCED BY ${{\mathit K}^{\pm}}$ BEAM   $82 \pm6$ MeV

PRODUCED IN ${{\mathit e}^{+}}{{\mathit e}^{-}}$ ANNIHILATION AND PARTICLE DECAYS   $86 \pm4$ MeV (S = 2.4)

PRODUCED IN ${{\overline{\mathit p}}}{{\mathit p}}$ ANNIHILATION   $77 \pm5$ MeV

CENTRAL PRODUCTION   $70 \pm25$ MeV

PRODUCED IN ${{\mathit e}}{{\mathit p}}$ COLLISIONS   $83 \pm10$ MeV

${{\mathit f}_{{{2}}}^{\,'}{(1525)}}$ DECAY MODES
Mode   Fraction ($\Gamma_i$ / $\Gamma$) Scale Factor/ Conf. Level P(MeV/c)   $\Gamma_{1}$ ${{\mathit K}}{{\overline{\mathit K}}}$   $(88.8\pm{2.2})\%$ 576   $\Gamma_{2}$ ${{\mathit \eta}}{{\mathit \eta}}$   $(10.3\pm{2.2})\%$ 525   $\Gamma_{3}$ ${{\mathit \pi}}{{\mathit \pi}}$   $(8.2\pm{1.5})\times 10^{-3}$ 747   $\Gamma_{4}$ ${{\mathit K}}{{\overline{\mathit K}}^{*}{(892)}}$ + c.c.   299   $\Gamma_{5}$ ${{\mathit \pi}}{{\mathit K}}{{\overline{\mathit K}}}$   509   $\Gamma_{6}$ ${{\mathit \pi}}{{\mathit \pi}}{{\mathit \eta}}$   628   $\Gamma_{7}$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{-}}$   693   $\Gamma_{8}$ ${{\mathit \gamma}}{{\mathit \gamma}}$   $(1.12\pm{0.15})\times 10^{-6}$ 759
FOOTNOTES

Constrained Fit information