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LIGHT UNFLAVORED MESONS
($\boldsymbol S$ = $\boldsymbol C$ = $\boldsymbol B$ = 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 $\mathit I = 0$ (${{\mathit \eta}}$, ${{\mathit \eta}^{\,'}}$, ${{\mathit h}}$, ${{\mathit h}^{\,'}}$, ${{\mathit \omega}}$, ${{\mathit \phi}}$, ${{\mathit f}}$, ${{\mathit f}^{\,'}}$): ${\mathit {\mathit c}}_{{\mathrm {1}}}$( ${{\mathit u}}{{\overline{\mathit u}}}$ $+$ ${{\mathit d}}{{\overline{\mathit d}}}$ ) $+$ ${\mathit {\mathit c}}_{{\mathrm {2}}}$( ${{\mathit s}}{{\overline{\mathit s}}}$ )

${{\boldsymbol b}_{{1}}{(1235)}}$ $I^G(J^{PC})$ = $1^+(1^{+ -})$

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

$1229.5 \pm3.2$ MeV (S = 1.6)

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

$142 \pm9$ MeV (S = 1.2)

${{\mathit b}_{{1}}{(1235)}}{\mathit D}{\mathrm -wave}/{\mathit S}{\mathrm -wave}$ AMPLITUDE RATIO IN DECAY OF ${{\mathit b}_{{1}}{(1235)}}$ $\rightarrow$ ${{\mathit \omega}}{{\mathit \pi}}$

$0.277 \pm0.027$ (S = 2.4)

${{\mathit b}_{{1}}{(1235)}}{\mathit D}{\mathrm -wave}/{\mathit S}{\mathrm -wave}$ AMPLITUDE PHASE DIFFERENCE IN DECAY OF ${{\mathit b}_{{1}}{(1235)}}$ $\rightarrow$ ${{\mathit \omega}}{{\mathit \pi}}$

$10 \pm5$ $^\circ{}$

Decay Modes

${{\mathit \omega}}{{\mathit \pi}}$

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

$(1.6\pm{0.4})\times 10^{-3}$

${{\mathit \eta}}{{\mathit \rho}}$

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

${{\mathit K}^{*}{(892)}^{\pm}}{{\mathit K}^{\mp}}$

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

${{\mathit K}_S^0}$ ${{\mathit K}_L^0}$ ${{\mathit \pi}^{\pm}}$

${{\mathit K}_S^0}$ ${{\mathit K}_S^0}$ ${{\mathit \pi}^{\pm}}$

${{\mathit \phi}}{{\mathit \pi}}$