LIGHT UNFLAVORED MESONS
($\mathit S$ = $\mathit C$ = $\mathit B$ = $\mathit{0}$)
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 search

${{\mathit f}_{{{4}}}{(2300)}}$ $I^G(J^{PC})$ = $0^+(4^{+ +})$

This entry was previously called ${{\mathit U}_{{{0}}}{(2350)}}$. Contains results mostly from formation experiments. For further production experiments see the Further States entry. See also ${{\mathit \rho}{(2150)}}$, ${{\mathit f}_{{{2}}}{(2150)}}$, ${{\mathit \rho}_{{{3}}}{(2250)}}$, ${{\mathit \rho}_{{{5}}}{(2350)}}$.

${{\mathit f}_{{{4}}}{(2300)}}$ MASS

${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}}{{\mathit \pi}}$ or ${{\overline{\mathit K}}}{{\mathit K}}$

$\mathit S$-CHANNEL ${{\overline{\mathit p}}}{{\mathit p}}$ or ${{\overline{\mathit N}}}{{\mathit N}}$

${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \eta}}{{\mathit \pi}}{{\mathit \pi}}{{\mathit n}}$

${{\mathit p}}{{\mathit p}}$ CENTRAL PRODUCTION

$2320 \pm60$ MeV

${{\mathit f}_{{{4}}}{(2300)}}$ WIDTH

${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}}{{\mathit \pi}}$ or ${{\overline{\mathit K}}}{{\mathit K}}$

$\mathit S$-CHANNEL ${{\overline{\mathit p}}}{{\mathit p}}$ or ${{\overline{\mathit N}}}{{\mathit N}}$

${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \eta}}{{\mathit \pi}}{{\mathit \pi}}{{\mathit n}}$

${{\mathit p}}{{\mathit p}}$ CENTRAL PRODUCTION

$250 \pm80$ MeV