${{\boldsymbol \phi}{(1680)}}$ MASS

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

VALUE (MeV) EVTS DOCUMENT ID TECN  COMMENT
$\bf{ 1680 \pm20}$ OUR ESTIMATE
• • • We do not use the following data for averages, fits, limits, etc. • • •
$1641$ ${}^{+24}_{-18}$
ACHASOV
2019
SND ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}{{\mathit \eta}}$
$1667$ $\pm5$ $\pm11$ 3k 1
IVANOV
2019A
 CMD3 $1.59 - 2.007$ ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \eta}}$
$1700$ $\pm23$ 2k 2
ACHASOV
2018A
 SND $1.3 - 2.0$ ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit K}_L^0}$ ${{\mathit \pi}^{0}}$
$1674$ $\pm12$ $\pm6$ 6.2k 3
LEES
2014H
 BABR ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit K}_L^0}$ ${{\mathit \gamma}}$
$1733$ $\pm10$ $\pm10$ 4
LEES
2012F
 BABR 10.6 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \phi}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \gamma}}$
$1689$ $\pm7$ $\pm10$ 4.8k 5
SHEN
2009
BELL 10.6 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \gamma}}$
$1709$ $\pm20$ $\pm43$ 6
AUBERT
2008S
 BABR 10.6 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ hadrons
$1623$ $\pm20$ 948 7
AKHMETSHIN
2003
CMD2 $1.05 - 1.38$ ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit K}_L^0}$ ${{\mathit K}_S^0}$
$\sim{}\text{ 1500}$ 8
ACHASOV
1998H
 RVUE ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}$ , ${{\mathit \omega}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ , ${{\mathit K}^{+}}{{\mathit K}^{-}}$
$\sim{}\text{ 1900}$ 9
ACHASOV
1998H
 RVUE ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit K}^{\pm}}{{\mathit \pi}^{\mp}}$
$1700$ $\pm20$ 10
CLEGG
1994
RVUE ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}$ , ${{\mathit K}_S^0}$ ${{\mathit K}}{{\mathit \pi}}$
$1657$ $\pm27$ 367
BISELLO
1991C
 DM2 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit K}^{\pm}}{{\mathit \pi}^{\mp}}$
$1655$ $\pm17$ 11
BISELLO
1988B
 DM2 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}$
$1680$ $\pm10$ 12
BUON
1982
DM1 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ hadrons
$1677$ $\pm12$ 13
MANE
1982
DM1 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit K}}{{\mathit \pi}}$
1  From a fit with coherent interference of the ${{\mathit \phi}{(1680)}}$ with a non-resonant contribution.
2  Assuming the ${{\mathit K}}{{\overline{\mathit K}}^{*}{(892)}}$ + c.c. dynamics. Systematic uncertainties not estimated.
3  Using a vector meson dominance model with contribution from ${{\mathit \phi}{(1020)}}$, ${{\mathit \phi}{(1680)}}$, and higher mass excitations of ${{\mathit \rho}{(770)}}$ and ${{\mathit \omega}{(782)}}$.
4  Using events with ${{\mathit \pi}}{{\mathit \pi}}$ invariant mass less than 0.85 GeV.
5  From a fit with two incoherent Breit-Wigners.
6  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.
7  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.
8  Using data from IVANOV 1981 , BARKOV 1987 , BISELLO 1988B, DOLINSKY 1991 , and ANTONELLI 1992 .
9  Using the data from BISELLO 1991C.
10  Using BISELLO 1988B and MANE 1982 data.
11  From global fit including ${{\mathit \rho}}$, ${{\mathit \omega}}$, ${{\mathit \phi}}$ and ${{\mathit \rho}{(1700)}}$ assume mass 1570 MeV and width 510 MeV for ${{\mathit \rho}}$ radial excitation.
12  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.
13  Fit to one channel only, neglecting interference with ${{\mathit \omega}}$, ${{\mathit \rho}{(1700)}}$.
  References:
ACHASOV 2019
PR D99 112004 Measurement of the $e^+e^- \to \pi^+\pi^-\pi^0\eta$ cross section below $\sqrt{s}=2$ GeV
IVANOV 2019A
PL B798 134946 Study of the process $e^+e^-{\to}K^+K^-\eta$ with the CMD-3 detector at the VEPP-2000 collider
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
ACHASOV 1998H
PR D57 4334 Isoscalar Resonances with $\mathit J{}^{PC} = 1{}^{--}$ in ${{\mathit e}^{+}}{{\mathit e}^{-}}$ Annihilation
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)