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${{\mathit \phi}{(1680)}}$ WIDTH

${{\mathit e}^{+}}{{\mathit e}^{-}}$ PRODUCTION

INSPIRE   PDGID:

M067W1

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. • • $149$ $\pm12$ $\pm13$ 1 ZHU 2023 BELL ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \Upsilon}{(nS)}}$ $\rightarrow$ ${{\mathit \phi}}{{\mathit \eta}}{{\mathit \gamma}}$ $172$ $\pm8$ 2 ABLIKIM 2022 L BES3 $2.0 - 3.08$ ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \pi}^{0}}$ $185$ ${}^{+30}_{-26}$ ${}^{+25}_{-47}$ 1.8k 3 ABLIKIM 2020 F BES3 ${{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \eta}}$ $159$ $\pm32$ 4 ACHASOV 2020 C SND $1.3 - 2.0$ ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \pi}^{0}}$ $103$ ${}^{+26}_{-24}$ ACHASOV 2019 SND ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}{{\mathit \eta}}$ $176$ $\pm23$ $\pm38$ 3k 5 IVANOV 2019 A CMD3 $1.59 - 2.007$ ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \eta}}$ $300$ $\pm50$ 2k 6 ACHASOV 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 7 LEES 2014 H BABR ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit K}_L^0}$ ${{\mathit \gamma}}$ $300$ $\pm15$ $\pm37$ 8 LEES 2012 F BABR 10.6 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \phi}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \gamma}}$ $211$ $\pm14$ $\pm19$ 4.8k 9 SHEN 2009 BELL 10.6 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \gamma}}$ $322$ $\pm77$ $\pm160$ 10 AUBERT 2008 S BABR 10.6 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ hadrons $139$ $\pm60$ 948 11 AKHMETSHIN 2003 CMD2 $1.05 - 1.38$ ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit K}_L^0}$ ${{\mathit K}_S^0}$ $300$ $\pm60$ 12 CLEGG 1994 RVUE ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}$ , ${{\mathit K}_S^0}$ ${{\mathit K}}{{\mathit \pi}}$ $146$ $\pm55$ 367 BISELLO 1991 C DM2 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit K}^{\pm}}{{\mathit \pi}^{\mp}}$ $207$ $\pm45$ 13 BISELLO 1988 B DM2 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}$ $185$ $\pm22$ 14 BUON 1982 DM1 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ hadrons $102$ $\pm36$ 15 MANE 1982 DM1 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit K}}{{\mathit \pi}}$ 1  From a fit using a vector meson dominance model with contributions from ${{\mathit \phi}{(1680)}}$, ${{\mathit \phi}{(2170)}}$ and non resonant contribution. 2  From a partial wave amplitude analysis at $\sqrt {s }$ = 2.125 GeV which includes all the possible intermediate states that match $\mathit J{}^{PC}$ conservation in the subsequent two-body decay. The intermediate states are parameterized with the relativistic Breit-Wigner functions. Statistical error only. 3  Seen in ${{\mathit \psi}{(2S)}}$ decay with branching ratio ${{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit X}}{{\mathit \eta}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \eta}}$ = ($12.0$ $\pm1.3$ ${}^{+6.5}_{-6.9}$) $ \times 10^{-6}$. 4  From a fit using a vector meson dominance model with contribution from ${{\mathit \rho}{(770)}}$, ${{\mathit \omega}{(782)}}$, ${{\mathit \phi}{(1020)}}$, ${{\mathit \omega}{(1420)}}$, ${{\mathit \rho}{(1450)}}$. 5  From a fit with coherent interference of the ${{\mathit \phi}{(1680)}}$ with a non-resonant contribution. 6  Assuming the ${{\mathit K}}{{\overline{\mathit K}}^{*}{(892)}}$ + c.c. dynamics. Systematic uncertainties not estimated. 7  Using a vector meson dominance model with contribution from ${{\mathit \phi}{(1020)}}$, ${{\mathit \phi}{(1680)}}$, and higher mass excitations of ${{\mathit \rho}{(770)}}$ and ${{\mathit \omega}{(782)}}$. 8  Using events with ${{\mathit \pi}}{{\mathit \pi}}$ invariant mass less than 0.85 GeV. 9  From a fit with two incoherent Breit-Wigners. 10  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. 11  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. 12  Using BISELLO 1988B and MANE 1982 data. 13  From global fit including ${{\mathit \rho}}$, ${{\mathit \omega}}$, ${{\mathit \phi}}$ and ${{\mathit \rho}{(1700)}}$ 14  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. 15  Fit to one channel only, neglecting interference with ${{\mathit \omega}}$, ${{\mathit \rho}{(1700)}}$.

References:

ZHU 2023 PR D107 012006 Study of $e^{+}e^{-}\to\eta\phi$ via Initial State Radiation at Belle ABLIKIM 2022L JHEP 2207 045 Measurement of $e^{+}e^{-} \to K^{+}K^{-}\pi^{0}$ cross section and observation of a resonant structure ABLIKIM 2020F PR D101 032008 Partial wave analysis of $\psi(3686)\to K^{+}K^{-}\eta$ ACHASOV 2020C EPJ C80 1139 Measurement of the $e^+e^- \to K^+ K^- \pi^0$ cross section with the SND detector 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 Also PAN 65 1222 Measurement of the Cross Section for the Process ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit K}_L^0}$ ${{\mathit K}_S^0}$ in the Energy Region 2E = $1.05 - 1.38$ GeV with the CMD-2 Detector at VEPP-2M 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)

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