PRODUCED IN ${{\mathit e}^{+}}{{\mathit e}^{-}}$ ANNIHILATION AND PARTICLE DECAYS

INSPIRE   PDGID:
M013W3
VALUE (MeV) EVTS DOCUMENT ID TECN  COMMENT
$\bf{ 86 \pm4}$ OUR AVERAGE  Error includes scale factor of 2.4.  See the ideogram below.
$64.0$ $\pm4.3$ ${}^{+2.0}_{-6.1}$ 126K
ABLIKIM
2023M
BES3 ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit K}_S^0}$ ${{\mathit K}_S^0}$ ${{\mathit \pi}^{0}}$
$84$ $\pm6$ ${}^{+10}_{-5}$
AAIJ
2013AN
LHCB ${{\overline{\mathit B}}_{{{s}}}^{0}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit K}^{+}}{{\mathit K}^{-}}$
$75$ ${}^{+12}_{-10}$ ${}^{+16}_{-8}$ 5.5k 1
ABLIKIM
2013N
BES3 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \eta}}{{\mathit \eta}}$
$82.9$ ${}^{+2.1}_{-2.2}$ ${}^{+3.3}_{-2.0}$
UEHARA
2013
BELL ${{\mathit \gamma}}$ ${{\mathit \gamma}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit K}_S^0}$
$77$ $\pm15$
ABLIKIM
2005
BES2 ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \phi}}{{\mathit K}^{+}}{{\mathit K}^{-}}$
$82$ $\pm2$ $\pm3$
ABE
2004
BELL 10.6 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit e}^{-}}{{\mathit K}^{+}}{{\mathit K}^{-}}$
$75$ $\pm4$ ${}^{+15}_{-5}$
BAI
2003G
BES ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit K}}{{\overline{\mathit K}}}$
$100$ $\pm15$ 331 2
ACCIARRI
2001H
L3 91, $183 - 209$ ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit e}^{-}}{{\mathit K}_S^0}$ ${{\mathit K}_S^0}$
$60$ $\pm20$ $\pm19$
ABREU
1996C
DLPH ${{\mathit Z}^{0}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}$ + X
$60$ $\pm23$ ${}^{+13}_{-20}$
BAI
1996C
BES ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit K}^{+}}{{\mathit K}^{-}}$
$103$ $\pm30$
AUGUSTIN
1988
DM2 ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit K}^{+}}{{\mathit K}^{-}}$
$100$ $\pm3$ 3
FALVARD
1988
DM2 ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \phi}}{{\mathit K}^{+}}{{\mathit K}^{-}}$
$85$ $\pm35$
BALTRUSAITIS
1987
MRK3 ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit K}^{+}}{{\mathit K}^{-}}$
• • We do not use the following data for averages, fits, limits, etc. • •
$78$ $\pm6$ 4
KLEMPT
2022
RVUE ${{\mathit J / \psi}{(1S)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \pi}^{0}}{{\mathit \pi}^{0}}$ , ${{\mathit \gamma}}{{\mathit K}_S^0}$ ${{\mathit K}_S^0}$
$84$ $\pm15$ 5
RODAS
2022
RVUE ${{\mathit J / \psi}{(1S)}}$ $\rightarrow$ ${{\mathit \gamma}}$ (${{\mathit \pi}}{{\mathit \pi}}$ , ${{\mathit K}}{{\overline{\mathit K}}}$)
$37$ $\pm12$ 29 6
LEES
2014H
BABR ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit K}_S^0}$ ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \gamma}}$
$104$ $\pm10$ 870 7
SCHEGELSKY
2006A
RVUE ${{\mathit \gamma}}$ ${{\mathit \gamma}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit K}_S^0}$
$62$ $\pm10$ 8
FALVARD
1988
DM2 ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \phi}}{{\mathit K}^{+}}{{\mathit K}^{-}}$
1  From partial wave analysis including all possible combinations of 0${}^{++}$, 2${}^{++}$, and 4${}^{++}$ resonances.
2  Supersedes ACCIARRI 1995J.
3  From an analysis including interference with ${{\mathit f}_{{{0}}}{(1710)}}$.
4  Fit of the tensor partial waves from BES3 in the multipole basis.
5  T-matrix pole from coupled channel K-matrix fit to data on ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \pi}^{0}}{{\mathit \pi}^{0}}$ (ABLIKIM 2015AE) and ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit K}_S^0}$ ${{\mathit K}_S^0}$ (ABLIKIM 2018AA).
6  From a fit to a Breit-Wigner line shape plus a second-order polynomial function. Systematic errors not evaluated.
7  From analysis of L3 data at 91 and $183 - 209$ GeV.
8  From an analysis ignoring interference with ${{\mathit f}_{{{0}}}{(1710)}}$.

           ${{\mathit f}_{{{2}}}^{\,'}{(1525)}}$ width, ${{\mathit e}^{+}}{{\mathit e}^{-}}$ annihilation and particle decays (MeV)
References