${{\mathit \psi}{(4660)}}$ WIDTH

INSPIRE   PDGID:
M189W
VALUE (MeV) EVTS DOCUMENT ID TECN  COMMENT
$\bf{ 73 {}^{+13}_{-11}}$ OUR AVERAGE  Error includes scale factor of 1.7.  See the ideogram below.
$126$ ${}^{+27}_{-23}$ $\pm30$ 1
ABLIKIM
2023BI
BES3 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit J / \psi}}$
$30.5$ $\pm22.3$ $\pm14.6$ 2
ABLIKIM
2023H
BES3 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \phi}}{{\mathit \chi}_{{{c2}}}}$
$218.3$ $\pm72.9$ $\pm9.3$ 3
ABLIKIM
2023X
BES3 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit D}^{*0}}{{\mathit D}^{*-}}{{\mathit \pi}^{+}}$
$155.4$ $\pm24.8$ $\pm0.8$ 4
ABLIKIM
2021AJ
BES3 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \psi}{(2S)}}$
$47.0$ ${}^{+31.3}_{-14.8}$ $\pm4.6$ 66 5
JIA
2020
BELL ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit D}_{{{s}}}^{+}}{{\mathit D}_{{{s2}}}^{*}{(2573)}^{-}}$
$49.8$ ${}^{+13.9}_{-11.5}$ $\pm4.0$ 89 6
JIA
2019A
BELL ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit D}_{{{s}}}^{+}}{{\mathit D}_{{{s1}}}{(2536)}^{-}}$
$68$ $\pm11$ $\pm5$ 279 7
WANG
2015A
BELL 10.58 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \psi}{(2S)}}$
$104$ $\pm48$ $\pm10$ 37 8
LEES
2014F
BABR 10.58 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \psi}{(2S)}}$
$92$ ${}^{+40}_{-24}$ ${}^{+10}_{-21}$ 142 9
PAKHLOVA
2008B
BELL ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \Lambda}_{{{c}}}^{+}}{{\mathit \Lambda}_{{{c}}}^{-}}$
• • We do not use the following data for averages, fits, limits, etc. • •
$33.1$ $\pm18.6$ $\pm4.1$ 10
ABLIKIM
2022R
BES3 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \chi}_{{{c1}}}}{{\mathit \gamma}}$
$62.6$ $\pm5.6$ $\pm4.3$ 11
DAI
2017
RVUE ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \Lambda}_{{{c}}}^{+}}{{\mathit \Lambda}_{{{c}}}^{-}}$
$113.8$ $\pm18.1$ $\pm3.4$ 12
ZHANG
2017B
RVUE ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \psi}{(2S)}}$
$103.5$ $\pm15.6$ $\pm4.0$ 13
ZHANG
2017C
RVUE ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit J / \psi}}$ or ${{\mathit \psi}{(2S)}}$
$42$ ${}^{+17}_{-12}$ $\pm6$ 44 14
LIU
2008H
RVUE 10.58 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \psi}{(2S)}}$
$48$ $\pm15$ $\pm3$ 44
WANG
2007D
BELL 10.58 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \psi}{(2S)}}$
1  Seen as a peak in the c.m. energy dependence of the ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit J / \psi}}$ cross section using 5.85 ${\mathrm {fb}}{}^{-1}$ of data at c.m. energies $4.61 - 4.95$ GeV. Statistical significance is over 5$\sigma $.
2  Fit model parameterized as the coherent sum of a Breit-Wigner resonance and a continuum amplitude term.
3  From a cross-section measurement of ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit D}^{*0}}{{\mathit D}^{*-}}{{\mathit \pi}^{+}}$ between 4.189 and 4.951 GeV, assuming a coherent sum of 3 Breit-Wigner resonances plus a continuum amplitude. The two other resonances have masses (widths) $4209.6$ $\pm7.5$ ($81.6$ $\pm19.9$) MeV and $4469.1$ $\pm26.4$ ($246.3$ $\pm37.9$) MeV.
4  From a three-resonance fit to the Born cross section in the range $\sqrt {s }$ = $4.008 - 4.698$ GeV.
5  Using ${{\mathit D}_{{{s2}}}^{*}{(2573)}^{-}}$ $\rightarrow$ ${{\overline{\mathit D}}^{0}}{{\mathit K}^{-}}$ decays.
6  From a fit of a Breit-Wigner convolved with a Gaussian.
7  From a two-resonance fit. Supersedes WANG 2007D.
8  From a two-resonance fit.
9  The ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \psi}{(2S)}}$ and ${{\mathit \Lambda}_{{{c}}}^{+}}{{\mathit \Lambda}_{{{c}}}^{-}}$ states are not necessarily the same.
10  From a fit to the ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \psi}{(3823)}}$ cross section between 4.23 and 4.70 GeV with two coherent Breit-Wigner resonances. The data is also consistent with a single peak with mass $4417.5$ $\pm26.2$ $\pm3.5$ MeV and width $245$ $\pm48$ $\pm13$ MeV.
11  The pole parameters are extracted from the speed plot.
12  From a three-resonance fit.
13  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.
14  From a combined fit of AUBERT 2007S and WANG 2007D data with two resonances.

           ${{\mathit \psi}{(4660)}}$ WIDTH (MeV)
References