# ${{\boldsymbol f}_{{J}}{(2220)}}$ WIDTH INSPIRE search

VALUE (MeV) CL% EVTS DOCUMENT ID TECN  COMMENT
$\bf{ 23 {}^{+8}_{-7}}$ OUR AVERAGE
$19$ ${}^{+13}_{-11}$ $\pm12$ 74
 1996 B
BES ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$
$20$ ${}^{+20}_{-15}$ $\pm17$ 46
 1996 B
BES ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit K}^{+}}{{\mathit K}^{-}}$
$20$ ${}^{+25}_{-16}$ $\pm14$ 23
 1996 B
BES ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit K}_S^0}$ ${{\mathit K}_S^0}$
$15$ ${}^{+12}_{-9}$ $\pm9$ 32
 1996 B
BES ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit p}}{{\overline{\mathit p}}}$
$60$ ${}^{+107}_{-57}$
 1988 F
LASS 11 ${{\mathit K}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \Lambda}}$
$80$ $\pm30$
 1988
SPEC 40 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit K}_S^0}$ ${{\mathit n}}$
$26$ ${}^{+20}_{-16}$ $\pm17$ 93
 1986 D
MRK3 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit K}^{+}}{{\mathit K}^{-}}$
$18$ ${}^{+23}_{-15}$ $\pm10$ 23
 1986 D
MRK3 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit K}_S^0}$ ${{\mathit K}_S^0}$
• • • We do not use the following data for averages, fits, limits, etc. • • •
$8.6 \pm2.5$ 1
 2008
SPEC 40 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit K}_S^0}$ ${{\mathit n}}$ +m${{\mathit \pi}^{0}}$
$\text{<80}$ 90
 1987 C
GAM2 38 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \eta}^{\,'}}{{\mathit \eta}}{{\mathit n}}$
1  $\mathit J{}^{PC} = 2{}^{++}$. Systematic uncertainties not evaluated
References:
PRL 76 3502 Studies of ${{\mathit \xi}{(2230)}}$ in ${{\mathit J / \psi}}$ Radiative Decays
PL B215 199 Evidence for a $\mathit J{}^{PC} = 4++$ ${{\mathit K}}{{\overline{\mathit K}}}$ State at 2.2 ${\mathrm {GeV/}}\mathit c{}^{2}$ from ${{\mathit K}^{-}}{{\mathit p}}$ Interaction at 11 ${\mathrm {GeV/}}\mathit c$
NP B309 426 ${{\mathit \theta}{(1700)}}$ and ${{\mathit \xi}{(2230)}}$ Resonances in the ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit K}_S^0}$ ${{\mathit n}}$ Reaction at Momentum 40 ${\mathrm {GeV/}}\mathit c$
SJNP 45 255 2.22 GeV ${{\mathit \eta}}{{\mathit \eta}^{\,'}}$ Structure Observed in 38 and 100 ${\mathrm {GeV/}}\mathit c$ ${{\mathit \pi}^{-}}{{\mathit p}}$ Collisions
PRL 56 107 Observation of a Narrow ${{\mathit K}}{{\overline{\mathit K}}}$ State in ${{\mathit J / \psi}}$ Radiative Decays