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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: M015

${{\mathit \rho}_{{{3}}}{(1690)}}$ $I^G(J^{PC})$ = $1^+(3^{- -})$

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▸  exp ${{\mathit \rho}_{{{3}}}{(1690)}}$ MASS

${{\mathit \rho}_{{{3}}}{(1690)}}$ MASS [1] $1688.8$ $\pm2.1$ MeV

2 ${{\mathit \pi}}$ MODE $1686$ $\pm4$ MeV

${{\mathit K}}{{\overline{\mathit K}}}$ AND ${{\mathit K}}{{\overline{\mathit K}}}{{\mathit \pi}}$ MODES $1696$ $\pm4$ MeV

(4${{\mathit \pi}}){}^{+-}$ MODE $1686$ $\pm5$ MeV (S = 1.1)

${{\mathit \omega}}{{\mathit \pi}}$ MODE $1681$ $\pm7$ MeV

${{\mathit \eta}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ MODE $1682$ $\pm12$ MeV

▸  exp ${{\mathit \rho}_{{{3}}}{(1690)}}$ WIDTH

2 ${{\mathit \pi}}$, ${{\mathit K}}{{\overline{\mathit K}}}$, AND ${{\mathit K}}{{\overline{\mathit K}}}{{\mathit \pi}}$ MODES [1] $161$ $\pm10$ MeV (S = 1.5)

2${{\mathit \pi}}$ MODE $186$ $\pm14$ MeV (S = 1.3)

${{\mathit K}}{{\overline{\mathit K}}}$ AND ${{\mathit K}}{{\overline{\mathit K}}}{{\mathit \pi}}$ MODES $204$ $\pm18$ MeV

(4${{\mathit \pi}}){}^{+-}$ MODE $129$ $\pm10$ MeV

${{\mathit \omega}}{{\mathit \pi}}$ MODE $190$ $\pm40$ MeV

${{\mathit \eta}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ MODE $130$ $\pm40$ MeV (S = 1.8)

${{\mathit \rho}_{{{3}}}{(1690)}}$ DECAY MODES

Mode   Fraction ($\Gamma_i$ / $\Gamma$) Scale Factor/ Conf. Level P(MeV/c)   $\Gamma_{1}$ 4 ${{\mathit \pi}}$ ($71.1$ $\pm1.9$ ) $\%$ 790   $\Gamma_{2}$ ${{\mathit \pi}^{\pm}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}$ ($67$ $\pm22$ ) $\%$ 787   $\Gamma_{3}$ ${{\mathit \omega}}{{\mathit \pi}}$ ($16$ $\pm6$ ) $\%$ 655   $\Gamma_{4}$ ${{\mathit \pi}}{{\mathit \pi}}$ ($23.6$ $\pm1.3$ ) $\%$ 834   $\Gamma_{5}$ ${{\mathit K}}{{\overline{\mathit K}}}{{\mathit \pi}}$ ($3.8$ $\pm1.2$ ) $\%$ 629   $\Gamma_{6}$ ${{\mathit K}}{{\overline{\mathit K}}}$ ($1.58$ $\pm0.26$ ) $\%$ S=1.2  685   $\Gamma_{7}$ ${{\mathit \eta}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ seen 727   $\Gamma_{8}$ ${{\mathit \rho}{(770)}}{{\mathit \eta}}$ seen 520   $\Gamma_{9}$ ${{\mathit \pi}}{{\mathit \pi}}{{\mathit \rho}}$ seen 633   $\Gamma_{10}$ ${{\mathit a}_{{{2}}}{(1320)}}{{\mathit \pi}}$ seen 307   $\Gamma_{11}$ ${{\mathit \rho}}{{\mathit \rho}}$ seen 335   $\Gamma_{12}$ ${{\mathit \phi}}{{\mathit \pi}}$ 525   $\Gamma_{13}$ ${{\mathit \eta}}{{\mathit \pi}}$ 749   $\Gamma_{14}$ ${{\mathit \pi}^{\pm}}$2 ${{\mathit \pi}^{+}}$2 ${{\mathit \pi}^{-}}{{\mathit \pi}^{0}}$ 694

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

Constrained Fit information