# ${{\boldsymbol \psi}{(4360)}}$ WIDTH INSPIRE search

VALUE (MeV) EVTS DOCUMENT ID TECN  COMMENT
$\bf{ 96 \pm7}$ OUR AVERAGE
$101.4$ ${}^{+25.3}_{-19.7}$ $\pm10.2$ 1
 2017 B
BES3 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit J / \psi}}$
$84.2$ $\pm12.5$ $\pm2.1$ 2
 2017 V
BES3 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \psi}{(2S)}}$
$103$ $\pm9$ $\pm5$ 279 3
 2015 A
BELL 10.58 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \psi}{(2S)}}$
$94$ $\pm32$ $\pm13$ 37 4
 2014 F
BABR 10.58 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \psi}{(2S)}}$
• • • We do not use the following data for averages, fits, limits, etc. • • •
$94.2$ $\pm7.3$ $\pm2.0$ 5
 2017 B
RVUE $e^+e^-\to\pi^+\pi^-\psi(2S)$
$96.0$ $\pm6.7$ $\pm2.7$ 6
 2017 C
RVUE ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit J / \psi}}$ or ${{\mathit \psi}{(2S)}}$
$103$ ${}^{+17}_{-15}$ $\pm11$ 74 7
 2008 H
RVUE 10.58 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \psi}{(2S)}}$
$172$ $\pm33$ 8
 2007 S
BABR 10.58 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \psi}{(2S)}}$
$74$ $\pm15$ $\pm10$ 47 4
 2007 D
BELL 10.58 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \psi}{(2S)}}$
1  From a three-resonance fit.
2  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${}^{-1}$.
3  From a two-resonance fit. Supersedes WANG 2007D.
4  From a two-resonance fit.
5  From a three-resonance fit.
6  From a combined fit of BELLE, BABAR and BES3 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit J / \psi}}$ and ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \psi}{(2S)}}$ data.
7  From a combined fit of AUBERT 2007S and WANG 2007D data with two resonances.
8  From a single-resonance fit. Systematic errors not estimated.
References:
 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
 ZHANG 2017B
PR D96 054008 Revisiting the ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \psi}{(3686)}}$ Line Shape
 ZHANG 2017C
EPJ C77 727 Combined Fit to the ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit J / \psi}}$ and ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \psi}{(3686)}}$ Line Shape
 WANG 2015A
PR D91 112007 Measurement of ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \psi}{(2S)}}$ via Initial State Radiation at Belle
 LEES 2014F
PR D89 111103 Study of the Reaction ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \psi}{(2S)}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ via Initial-State Radiation at BaBar
 LIU 2008H
PR D78 014032 Combined Fit to BABAR and Belle Data on ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \psi}{(2S)}}$
 AUBERT 2007S
PRL 98 212001 Evidence of a Broad Structure at an Invariant Mass of 4.32 GeV/$\mathit c{}^{2}$ in the Reaction ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \psi}{(2S)}}$ Measured at BABAR
 WANG 2007D
PRL 99 142002 Observation of Two Resonant Structures in ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \psi}{(2S)}}$ via Initial-State Radiation at Belle