# ${{\boldsymbol e}^{+}}{{\boldsymbol e}^{-}}$ PRODUCTION INSPIRE search

VALUE (MeV) EVTS DOCUMENT ID TECN  COMMENT
$\bf{ 150 \pm50}$ OUR ESTIMATE  This is only an educated guess; the error given is larger than the error on the average of the published values.
• • • We do not use the following data for averages, fits, limits, etc. • • •
$300$ $\pm50$ 2k 1
 2018 A
SND $1.3 - 2.0$ ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit K}_L^0}$ ${{\mathit \pi}^{0}}$
$165$ $\pm38$ $\pm70$ 6.2k 2
 2014 H
BABR ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit K}_L^0}$ ${{\mathit \gamma}}$
$300$ $\pm15$ $\pm37$ 3
 2012 F
BABR 10.6 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \phi}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \gamma}}$
$211$ $\pm14$ $\pm19$ 4.8k 4
 2009
BELL 10.6 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \gamma}}$
$322$ $\pm77$ $\pm160$ 5
 2008 S
BABR 10.6 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ hadrons
$139$ $\pm60$ 948 6
 2003
CMD2 $1.05 - 1.38$ ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit K}_L^0}$ ${{\mathit K}_S^0}$
$300$ $\pm60$ 7
 1994
RVUE ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}$ , ${{\mathit K}_S^0}$ ${{\mathit K}}{{\mathit \pi}}$
$146$ $\pm55$ 367
 1991 C
DM2 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit K}^{\pm}}{{\mathit \pi}^{\mp}}$
$207$ $\pm45$ 8
 1988 B
DM2 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}$
$185$ $\pm22$ 9
 1982
DM1 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ hadrons
$102$ $\pm36$ 10
 1982
DM1 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit K}}{{\mathit \pi}}$
1  Assuming the ${{\mathit K}}{{\overline{\mathit K}}^{*}{(892)}}$ + c.c. dynamics. Systematic uncertainties not estimated.
2  Using a vector meson dominance model with contribution from ${{\mathit \phi}{(1020)}}$, ${{\mathit \phi}{(1680)}}$, and higher mass excitations of ${{\mathit \rho}{(770)}}$ and ${{\mathit \omega}{(782)}}$.
3  Using events with ${{\mathit \pi}}{{\mathit \pi}}$ invariant mass less than 0.85 GeV.
4  From a fit with two incoherent Breit-Wigners.
5  From the simultaneous fit to the ${{\mathit K}}{{\overline{\mathit K}}^{*}{(892)}}$ + c.c. and ${{\mathit \phi}}{{\mathit \eta}}$ data from AUBERT 2008S using the results of AUBERT 2007AK.
6  From the combined fit of AKHMETSHIN 2003 and MANE 1981 also including ${{\mathit \rho}}$, ${{\mathit \omega}}$, and ${{\mathit \phi}}$. Neither isospin nor flavor structure known.
7  Using BISELLO 1988B and MANE 1982 data.
8  From global fit including ${{\mathit \rho}}$, ${{\mathit \omega}}$, ${{\mathit \phi}}$ and ${{\mathit \rho}{(1700)}}$
9  From global fit of ${{\mathit \rho}}$, ${{\mathit \omega}}$, ${{\mathit \phi}}$ and their radial excitations to channels ${{\mathit \omega}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ , ${{\mathit K}^{+}}{{\mathit K}^{-}}$ , ${{\mathit K}_S^0}$ ${{\mathit K}_L^0}$ , ${{\mathit K}_S^0}$ ${{\mathit K}^{\pm}}{{\mathit \pi}^{\mp}}$ . Assume mass 1570 MeV and width 510 MeV for ${{\mathit \rho}}$ radial excitations, mass 1570 and width 500 MeV for ${{\mathit \omega}}$ radial excitation.
10  Fit to one channel only, neglecting interference with ${{\mathit \omega}}$, ${{\mathit \rho}{(1700)}}$.
References:
 ACHASOV 2018A
PR D97 032011 Measurement of the $\mathbf{e^+e^- \rightarrow K_S K_L \pi^0}$ cross section in the energy range $\mathbf{\sqrt{s}=1.3-2.0}$ GeV
 LEES 2014H
PR D89 092002 Cross Sections for the Reactions ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit K}_L^0}$ , ${{\mathit K}_S^0}{{\mathit K}_L^0}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$, ${{\mathit K}_S^0}{{\mathit K}_S^0}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$, and ${{\mathit K}_S^0}{{\mathit K}_S^0}{{\mathit K}^{+}}{{\mathit K}^{-}}$ from Events with Initial-State Radiation
 LEES 2012F
PR D86 012008 Cross Sections for the Reactions ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ , ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \pi}^{0}}{{\mathit \pi}^{0}}$ , and ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit K}^{+}}{{\mathit K}^{-}}$ Measured using Initial-State Radiation Events
 SHEN 2009
PR D80 031101 Observation of the ${{\mathit \phi}{(1680)}}$ and the ${{\mathit Y}{(2175)}}$ in ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \phi}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$
 AUBERT 2008S
PR D77 092002 Measurements of ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \eta}}$ , ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \pi}^{0}}$ , and ${{\mathit K}_S^0}$ ${{\mathit K}^{\pm}}{{\mathit \pi}^{\mp}}$ Cross Sections using Initial State Radiation Events
 AKHMETSHIN 2003
PL B551 27 Study of the Process ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit K}_L^0}$ ${{\mathit K}_S^0}$ in the cm Energy Range 1.05-GeV to 1.38-GeV with CMD-2
 CLEGG 1994
ZPHY C62 455 Higher Vector Meson States Produced in Electron-Positron Annihilation
 BISELLO 1991C
ZPHY C52 227 Observation of an Isoscalar Vector Meson at 1650 ${\mathrm {MeV}}/\mathit c{}^{2}$ in the ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit K}}{{\overline{\mathit K}}}{{\mathit \pi}}$ Reaction
 BISELLO 1988B
ZPHY C39 13 Study of Reaction ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}$ in the Energy Range 1350 ${}\leq{}$ $\sqrt {s }{}\leq{}$ 2400 MeV
 BUON 1982
PL 118B 221 Interpretation of DM1 Results on ${{\mathit e}^{+}}{{\mathit e}^{-}}$ Annihilation into Exclusive Channels between 1.4 and 1.9 GeV with a ${{\mathit \rho}^{\,'}}{{\mathit \omega}^{\,'}}{{\mathit \phi}^{\,'}}$ Model
 MANE 1982
PL 112B 178 Study of the ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit K}^{\pm}}{{\mathit \pi}^{\mp}}$ Reaction in the 1.4 to 2.18 GeV Energy Range: A New Observation of an Isoscalar Vector Meson $−$ ${{\mathit \phi}^{\,'}}$(1.65 GeV)