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 $\mathit I = 0$ (${{\mathit \eta}}$, ${{\mathit \eta}^{\,'}}$, ${{\mathit h}}$, ${{\mathit h}^{\,'}}$, ${{\mathit \omega}}$, ${{\mathit \phi}}$, ${{\mathit f}}$, ${{\mathit f}^{\,'}}$): ${\mathit {\mathit c}}_{{\mathrm {1}}}$( ${{\mathit u}}{{\overline{\mathit u}}}$ $+$ ${{\mathit d}}{{\overline{\mathit d}}}$ ) $+$ ${\mathit {\mathit c}}_{{\mathrm {2}}}$( ${{\mathit s}}{{\overline{\mathit s}}}$ ) INSPIRE search

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

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 ${{\mathit \rho}{(2150)}}$, ${{\mathit f}_{{2}}{(2150)}}$, ${{\mathit \rho}_{{3}}{(2250)}}$, ${{\mathit \rho}_{{5}}{(2350)}}$.
${{\boldsymbol f}_{{4}}{(2300)}}$ MASS
 Mass $\mathit m$
 ${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}}{{\mathit \pi}}$ 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
${{\boldsymbol f}_{{4}}{(2300)}}$ 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