#### ${{\boldsymbol \psi}{(4230)}}$ WIDTH

VALUE (MeV) EVTS DOCUMENT ID TECN  COMMENT
 $\bf{ 20\text{ to }100 }$ OUR ESTIMATE
 $\bf{ 50 \pm9}$ OUR AVERAGE  Error includes scale factor of 3.8. See the ideogram below.
$47.2$ $\pm22.8$ $\pm10.5$ 1
 2020 AG
BES3 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$
$46.2$ $\pm4.7$ $\pm2.1$ 2
 2020 N
BES3 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{0}}{{\mathit \pi}^{0}}{{\mathit J / \psi}}$
$82.0$ $\pm5.7$ $\pm0.4$ 2
 2020 O
BES3 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \eta}}{{\mathit J / \psi}}$
$28.2$ $\pm3.9$ $\pm1.6$ 3
 2019 AI
BES3 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \omega}}{{\mathit \chi}_{{c0}}}$
$77.0$ $\pm6.8$ $\pm6.3$
 2019 R
BES3 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit D}^{0}}{{\mathit D}^{*-}}$ + c.c.
$115$ ${}^{+38}_{-26}$ $\pm12$ 4
 2019 V
BES3 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \chi}_{{c1}}{(3872)}}$
$44.1$ $\pm4.3$ $\pm2.0$ 5
 2017 B
BES3 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit J / \psi}}$
$66.0$ ${}^{+12.3}_{-8.3}$ $\pm0.4$
 2017 G
BES3 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit h}_{{c}}}$
$80.1$ $\pm24.6$ $\pm2.9$ 6
 2017 V
BES3 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \psi}{(2S)}}$
• • We do not use the following data for averages, fits, limits, etc. • •
$41.2$ $\pm16.0$ $\pm16.4$
 2020 N
BES3 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{0}}{{\mathit Z}_{{c}}{(3900)}^{0}}$ , ${{\mathit Z}_{{c}}^{0}}$ $\rightarrow$ ${{\mathit \pi}^{0}}{{\mathit J / \psi}}$
$38$ $\pm12$ $\pm2$ 180 7
 2015 C
BES3 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \omega}}{{\mathit \chi}_{{c0}}}$
 1 Solution 1 of 8 with equal fit quality to the ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$ cross section between 3.8 and 4.6 GeV to the coherent sum of four resonant amplitudes. Other solutions range from $36.4$ $\pm16.8$ $\pm8.1$ to $49.6$ $\pm22.6$ $\pm11.0$ MeV.
 2 From a fit of the measured cross section in the range $\sqrt {s }$ = $3.808 - 4.600$ GeV.
 3 From a fit of the measured cross section from $\sqrt {s }$ = $4.178 - 4.278$ GeV. Supersedes ABLIKIM 2015C.
 4 Simultaneous fit to ${{\mathit \chi}_{{c1}}}$ $\rightarrow$ ${{\mathit \omega}}{{\mathit J / \psi}}$ and ${{\mathit \chi}_{{c1}}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit J / \psi}}$ .
 5 From a three-resonance fit.
 6 From a fit to the cross section for ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \psi}{(2S)}}$ $\rightarrow$ 2 ( ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$) ${{\mathit \ell}^{+}}{{\mathit \ell}^{-}}$ obtained from 16 center-of-mass energies between 4.008 and 4.600 GeV and comprising 5.1 fb${}^{-1}$.
 7 From a 3-parameter fit of measured cross sections from $\sqrt {s }$ = $4.21 - 4.42$ GeV to a phase-space modified Breit-Wigner function, using the decays ${{\mathit \chi}_{{c0}}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ , ${{\mathit \chi}_{{c0}}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}$ , and ${{\mathit \omega}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}$ .

${{\mathit \psi}{(4230)}}$ WIDTH (MeV)
References:
 ABLIKIM 2020O
PR D102 031101 Observation of the $Y(4220)$ and $Y(4360)$ in the process $e^{+}e^{-} \to \eta J/\psi$
 ABLIKIM 2020AG
PR D102 112009 Measurement of cross sections for $e^{+}e^{-} \rightarrow \mu^+\mu^-$ at center-of-mass energies from 3.80 to 4.60 GeV
 ABLIKIM 2020N
PR D102 012009 Study of the process $e^+e^-\to\pi^0\pi^0 J/\psi$ and neutral charmonium-like state $Z_c(3900)^0$
 ABLIKIM 2019AI
PR D99 091103 Cross section measurements of $e^+ e^-\to\omega\chi_{c0}$ form $\sqrt{s}=$ 4.178 to 4.278 GeV
 ABLIKIM 2019R
PRL 122 102002 Evidence of a resonant structure in the $e^+e^-\to \pi^+D^0D^{*-}$ cross section between 4.05 and 4.60 GeV
 ABLIKIM 2019V
PRL 122 232002 Study of $e^+e^- \to \gamma \omega J/\psi$ and Observation of $X(3872) \to \omega J/\psi$
 ABLIKIM 2017B
PRL 118 092001 Precise Measurement of the ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit J / \psi}}$ Cross Section at Center-of-Mass Energies from 3.77 to 4.60 GeV
 ABLIKIM 2017G
PRL 118 092002 Evidence of Two Resonant Structures in ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit h}_{{c}}}$
 ABLIKIM 2017V
PR D96 032004 Measurement of ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \psi}{(3686)}}$ from 4.008 to 4.600 GeV and Observation of a Charged Structure in the ${{\mathit \pi}^{\pm}}{{\mathit \psi}{(3686)}}$ Mass Spectrum
 ABLIKIM 2015C
PRL 114 092003 Study of ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \omega}}{{\mathit \chi}_{{cJ}}}$ at Center-of-Mass Energies from 4.21 to 4.42 GeV