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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:

${{\mathit \pi}_{{{2}}}{(1670)}}$

$I^G(J^{PC})$ = $1^-(2^{- +})$

Expand/Collapse All

${{\mathit \pi}_{{{2}}}{(1670)}}$ MASS ^[1]

$1670.6^{+2.9}_{-1.2}$ MeV (S = 1.3)

${{\mathit \pi}_{{{2}}}{(1670)}}$ WIDTH ^[1]

$258^{+8}_{-9}$ MeV (S = 1.2)

▸ ${{\mathit \pi}_{{{2}}}{(1670)}}$ BRANCHING RATIOS

${{\mathit \pi}_{{{2}}}{(1670)}}$ DECAY MODES

Mode

Fraction ($\Gamma_i$ / $\Gamma$)

Scale Factor/
Conf. Level

P(MeV/c)

3 ${{\mathit \pi}}$

($95.8$ $\pm1.4$ ) $\%$

${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}$

${{\mathit \pi}^{0}}{{\mathit \pi}^{0}}{{\mathit \pi}^{0}}$

${{\mathit f}_{{{2}}}{(1270)}}{{\mathit \pi}}$

($56.3$ $\pm3.2$ ) $\%$

${{\mathit \rho}}{{\mathit \pi}}$

($31$ $\pm4$ ) $\%$

${{\mathit \sigma}}{{\mathit \pi}}$

($10$ $\pm4$ ) $\%$

${{\mathit \pi}}{({\mathit \pi}{\mathit \pi})_{{{\mathit S}-{\text{wave}}}}}$

($8.7$ $\pm3.4$ ) $\%$

${{\mathit \pi}^{\pm}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$

($53$ $\pm4$ ) $\%$

${{\mathit K}}{{\overline{\mathit K}}^{*}{(892)}}$ + c.c.

($4.2$ $\pm1.4$ ) $\%$

${{\mathit \omega}}{{\mathit \rho}}$

($2.7$ $\pm1.1$ ) $\%$

${{\mathit \pi}^{\pm}}{{\mathit \gamma}}$

($7.0$ $\pm1.2$) $ \times 10^{-4}$

${{\mathit \gamma}}{{\mathit \gamma}}$

$<2.8$ $\times 10^{-7}$

${{\mathit \eta}}{{\mathit \pi}}$

${{\mathit \pi}^{\pm}}$2 ${{\mathit \pi}^{+}}$2 ${{\mathit \pi}^{-}}$

${{\mathit \rho}{(1450)}}{{\mathit \pi}}$

$<3.6$ $\times 10^{-3}$

${{\mathit b}_{{{1}}}{(1235)}}{{\mathit \pi}}$

$<1.9$ $\times 10^{-3}$

${{\mathit f}_{{{1}}}{(1285)}}{{\mathit \pi}}$

${{\mathit a}_{{{2}}}{(1320)}}{{\mathit \pi}}$

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

Constrained Fit information

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