${{\mathit \psi}{(4230)}}$ MASS

INSPIRE   PDGID:
M222M
VALUE (MeV) EVTS DOCUMENT ID TECN  COMMENT
$\bf{ 4220 \pm15}$ OUR ESTIMATE
$\bf{ 4219.1 \pm1.7}$ OUR AVERAGE  Error includes scale factor of 1.1.
$4216.7$ $\pm8.9$ $\pm4.1$ 1
ABLIKIM
2020AG
 BES3 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$
$4220.4$ $\pm2.4$ $\pm2.3$ 2
ABLIKIM
2020N
 BES3 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{0}}{{\mathit \pi}^{0}}{{\mathit J / \psi}}$
$4218.6$ $\pm3.8$ $\pm2.5$ 2
ABLIKIM
2020O
 BES3 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \eta}}{{\mathit J / \psi}}$
$4218.5$ $\pm1.6$ $\pm4.0$ 3
ABLIKIM
2019AI
 BES3 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \omega}}{{\mathit \chi}_{{c0}}}$
$4228.6$ $\pm4.1$ $\pm6.3$
ABLIKIM
2019R
 BES3 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit D}^{0}}{{\mathit D}^{*-}}$ + c.c.
$4200.6$ ${}^{+7.9}_{-13.3}$ $\pm3.0$ 4
ABLIKIM
2019V
 BES3 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \chi}_{{c1}}{(3872)}}$
$4222.0$ $\pm3.1$ $\pm1.4$ 5
ABLIKIM
2017B
 BES3 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit J / \psi}}$
$4218$ ${}^{+5.5}_{-4.5}$ $\pm0.9$
ABLIKIM
2017G
 BES3 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit h}_{{c}}}$
$4209.5$ $\pm7.4$ $\pm1.4$ 6
ABLIKIM
2017V
 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. • •
$4231.9$ $\pm5.3$ $\pm4.9$
ABLIKIM
2020N
 BES3 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{0}}{{\mathit Z}_{{c}}{(3900)}^{0}}$ , ${{\mathit Z}_{{c}}^{0}}$ $\rightarrow$ ${{\mathit \pi}^{0}}{{\mathit J / \psi}}$
$4230$ $\pm8$ $\pm6$ 180 7
ABLIKIM
2015C
 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 $4212.8$ $\pm7.2$ $\pm4.0$ to $4219.4$ $\pm11.2$ $\pm4.1$ 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 ${{\mathit \omega}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}$ .
References:
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 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 2020O
PR D102 031101 Observation of the $Y(4220)$ and $Y(4360)$ in the process $e^{+}e^{-} \to \eta J/\psi$
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 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
Also
PR D99 019903 (errat.) Measurement of $e^{+}e^{-}\rightarrow \pi^{+}\pi^{-}\psi(3686)$ from 4.008 to 4.600~GeV and observation of a charged structure in the $\pi^{\pm}\psi(3686)$ mass spectrum
ABLIKIM 2017G
PRL 118 092002 Evidence of Two Resonant Structures in ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit h}_{{c}}}$
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