# 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 $\mathit I = 0$ (${{\mathit \eta}}$, ${{\mathit \eta}^{\,'}}$, ${{\mathit h}}$, ${{\mathit h}^{\,'}}$, ${{\mathit \omega}}$, ${{\mathit \phi}}$, ${{\mathit f}}$, ${{\mathit f}^{\,'}}$): ${\mathit {\mathit c}}_{{\mathrm {1}}}$( ${{\mathit u}}{{\overline{\mathit u}}}$ $+$ ${{\mathit d}}{{\overline{\mathit d}}}$ ) $+$ ${\mathit {\mathit c}}_{{\mathrm {2}}}$( ${{\mathit s}}{{\overline{\mathit s}}}$ )
 See related reviews: Form Factors for Radiative Pion and Kaon Decays Scalar Mesons below 2 GeV ${{\mathit \rho}{(770)}}$ Pseudoscalar and Pseudovector Mesons in the 1400 MeV Region ${{\mathit \rho}{(1450)}}$ and ${{\mathit \rho}{(1700)}}$
 • ${{\mathit \pi}^{\pm}}$ $1^-(0^{-})$
 • ${{\mathit \pi}^{0}}$ $1^-(0^{- +})$
 • ${{\mathit \eta}}$ $0^+(0^{- +})$
 • ${{\mathit f}_{{0}}{(500)}}$ aka ${{\mathit \sigma}}$; was ${{\mathit f}_{{0}}{(600)}}$ $0^+(0^{+ +})$
 • ${{\mathit \rho}{(770)}}$ $1^+(1^{- -})$
 • ${{\mathit \omega}{(782)}}$ $0^-(1^{- -})$
 • ${{\mathit \eta}^{\,'}{(958)}}$ $0^+(0^{- +})$
 • ${{\mathit f}_{{0}}{(980)}}$ $0^+(0^{+ +})$
 • ${{\mathit a}_{{0}}{(980)}}$ $1^-(0^{+ +})$
 • ${{\mathit \phi}{(1020)}}$ $0^-(1^{- -})$
 • ${{\mathit h}_{{1}}{(1170)}}$ $0^-(1^{+ -})$
 • ${{\mathit b}_{{1}}{(1235)}}$ $1^+(1^{+ -})$
 • ${{\mathit a}_{{1}}{(1260)}}$ $1^-(1^{+ +})$
 • ${{\mathit f}_{{2}}{(1270)}}$ $0^+(2^{+ +})$
 • ${{\mathit f}_{{1}}{(1285)}}$ $0^+(1^{+ +})$
 • ${{\mathit \eta}{(1295)}}$ $0^+(0^{- +})$
 • ${{\mathit \pi}{(1300)}}$ $1^-(0^{- +})$
 • ${{\mathit a}_{{2}}{(1320)}}$ $1^-(2^{+ +})$
 • ${{\mathit f}_{{0}}{(1370)}}$ $0^+(0^{+ +})$
 ${{\mathit h}_{{1}}{(1380)}}$ $?^-(1^{+ -})$
 • ${{\mathit \pi}_{{1}}{(1400)}}$ $1^-(1^{- +})$
 • ${{\mathit \eta}{(1405)}}$ $0^+(0^{- +})$
 ${{\mathit a}_{{1}}{(1420)}}$ $1^-(1^{+ +})$
 • ${{\mathit f}_{{1}}{(1420)}}$ $0^+(1^{+ +})$
 • ${{\mathit \omega}{(1420)}}$ $0^-(1^{- -})$
 ${{\mathit f}_{{2}}{(1430)}}$ $0^+(2^{+ +})$
 • ${{\mathit a}_{{0}}{(1450)}}$ $1^-(0^{+ +})$
 • ${{\mathit \rho}{(1450)}}$ $1^+(1^{- -})$
 • ${{\mathit \eta}{(1475)}}$ $0^+(0^{- +})$
 • ${{\mathit f}_{{0}}{(1500)}}$ $0^+(0^{+ +})$
 ${{\mathit f}_{{1}}{(1510)}}$ $0^+(1^{+ +})$
 • ${{\mathit f}_{{2}}^{\,'}{(1525)}}$ $0^+(2^{+ +})$
 ${{\mathit f}_{{2}}{(1565)}}$ $0^+(2^{+ +})$
 ${{\mathit \rho}{(1570)}}$ $1^+(1^{- -})$
 ${{\mathit h}_{{1}}{(1595)}}$ $0^-(1^{+ -})$
 • ${{\mathit \pi}_{{1}}{(1600)}}$ $1^-(1^{- +})$
 ${{\mathit a}_{{1}}{(1640)}}$ $1^-(1^{+ +})$
 ${{\mathit f}_{{2}}{(1640)}}$ $0^+(2^{+ +})$
 • ${{\mathit \eta}_{{2}}{(1645)}}$ $0^+(2^{- +})$
 • ${{\mathit \omega}{(1650)}}$ $0^-(1^{- -})$
 • ${{\mathit \omega}_{{3}}{(1670)}}$ $0^-(3^{- -})$
 • ${{\mathit \pi}_{{2}}{(1670)}}$ $1^-(2^{- +})$
 • ${{\mathit \phi}{(1680)}}$ $0^-(1^{- -})$
 • ${{\mathit \rho}_{{3}}{(1690)}}$ $1^+(3^{- -})$
 • ${{\mathit \rho}{(1700)}}$ $1^+(1^{- -})$
 ${{\mathit a}_{{2}}{(1700)}}$ $1^-(2^{+ +})$
 • ${{\mathit f}_{{0}}{(1710)}}$ $0^+(0^{+ +})$
 ${{\mathit \eta}{(1760)}}$ $0^+(0^{- +})$
 • ${{\mathit \pi}{(1800)}}$ $1^-(0^{- +})$
 ${{\mathit f}_{{2}}{(1810)}}$ $0^+(2^{+ +})$
 ${{\mathit X}{(1835)}}$ $?^?(0^{- +})$
 ${{\mathit X}{(1840)}}$ $?^?(?^{? ?})$
 • ${{\mathit \phi}_{{3}}{(1850)}}$ $0^-(3^{- -})$
 ${{\mathit \eta}_{{2}}{(1870)}}$ $0^+(2^{- +})$
 • ${{\mathit \pi}_{{2}}{(1880)}}$ $1^-(2^{- +})$
 ${{\mathit \rho}{(1900)}}$ $1^+(1^{- -})$
 ${{\mathit f}_{{2}}{(1910)}}$ $0^+(2^{+ +})$
 ${{\mathit a}_{{0}}{(1950)}}$ $1^-(0^{+ +})$
 • ${{\mathit f}_{{2}}{(1950)}}$ $0^+(2^{+ +})$
 ${{\mathit \rho}_{{3}}{(1990)}}$ $1^+(3^{- -})$
 • ${{\mathit f}_{{2}}{(2010)}}$ $0^+(2^{+ +})$
 ${{\mathit f}_{{0}}{(2020)}}$ $0^+(0^{+ +})$
 • ${{\mathit a}_{{4}}{(2040)}}$ $1^-(4^{+ +})$
 • ${{\mathit f}_{{4}}{(2050)}}$ $0^+(4^{+ +})$
 ${{\mathit \pi}_{{2}}{(2100)}}$ $1^-(2^{- +})$
 ${{\mathit f}_{{0}}{(2100)}}$ $0^+(0^{+ +})$
 ${{\mathit f}_{{2}}{(2150)}}$ $0^+(2^{+ +})$
 ${{\mathit \rho}{(2150)}}$ $1^+(1^{- -})$
 • ${{\mathit \phi}{(2170)}}$ $0^-(1^{- -})$
 ${{\mathit f}_{{0}}{(2200)}}$ $0^+(0^{+ +})$
 ${{\mathit f}_{{J}}{(2220)}}$ $0^+(2{}^{++}~$ or $~4^{+ +})$
 ${{\mathit \eta}{(2225)}}$ $0^+(0^{- +})$
 ${{\mathit \rho}_{{3}}{(2250)}}$ $1^+(3^{- -})$
 • ${{\mathit f}_{{2}}{(2300)}}$ $0^+(2^{+ +})$
 ${{\mathit f}_{{4}}{(2300)}}$ $0^+(4^{+ +})$
 ${{\mathit f}_{{0}}{(2330)}}$ $0^+(0^{+ +})$
 • ${{\mathit f}_{{2}}{(2340)}}$ $0^+(2^{+ +})$
 ${{\mathit \rho}_{{5}}{(2350)}}$ $1^+(5^{- -})$
 ${{\mathit a}_{{6}}{(2450)}}$ $1^-(6^{+ +})$
 ${{\mathit f}_{{6}}{(2510)}}$ $0^+(6^{+ +})$
 • Indicates established particles.