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${{\mathit \phi}{(2170)}}$ WIDTH

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M103W

M103W VALUE (MeV) EVTS DOCUMENT ID TECN  COMMENT $\bf{ 88 {}^{+26}_{-21}}$ OUR AVERAGE  Error includes scale factor of 2.5.  See the ideogram below. $32.4$ $\pm21.0$ $\pm1.8$ 1 ABLIKIM 2024 AN   BES3 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit K}_L^0}$ ${{\mathit \pi}^{0}}$ $140$ $\pm36$ $\pm16$ 2 ABLIKIM 2023 AX   BES3 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \phi}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ $191$ $\pm28$ $\pm60$ 3 ABLIKIM 2022 L   BES3 $2.0 - 3.08$ ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \pi}^{0}}$ $31.1$ ${}^{+21.1}_{-11.6}$ $\pm1.1$ 4 ABLIKIM 2021 T   BES3 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \phi}}{{\mathit \eta}}$ $149.0$ $\pm15.6$ $\pm8.9$ 5 ABLIKIM 2020 M   BES3 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \eta}^{\,'}}{{\mathit \phi}}$ $106.9$ $\pm32.1$ $\pm28.1$ 6 ABLIKIM 2020 S   BES3 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}$ ${{\mathit \pi}^{0}}{{\mathit \pi}^{0}}$ • • We do not use the following data for averages, fits, limits, etc. • • $86.1$ $\pm9.2$ 7 CHEN 2025 D   RVUE ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}$ , ${{\mathit K}_S^0}$ ${{\mathit K}_L^0}$ $35$ $\pm23$ 8 LICHARD 2023   RVUE ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \Upsilon}{(nS)}}$ $\rightarrow$ ${{\mathit \phi}}{{\mathit \eta}}{{\mathit \gamma}}$ $96$ ${}^{+17}_{-14}$ $\pm9$ 9 ZHU 2023 A   RVUE ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \eta}}{{\mathit \phi}}$ $86$ $\pm44$ $\pm51$ 10 ABLIKIM 2021 AP   BES3 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit K}_L^0}$ $104$ $\pm24$ $\pm12$ 95 ABLIKIM 2019 I   BES3 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \eta}}{{\mathit \phi}}{{\mathit f}_{{{0}}}{(980)}}$ $139.8$ $\pm12.3$ $\pm20.6$ 11 ABLIKIM 2019 L   BES3 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}$ $104$ $\pm15$ $\pm15$ 471 ABLIKIM 2015 H   BES3 ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \eta}}{{\mathit \phi}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ $77$ $\pm15$ $\pm10$ 12, 13 LEES 2012 F   BABR 10.6 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \phi}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \gamma}}$ $192$ $\pm23$ ${}^{+25}_{-61}$ 4.8k 14 SHEN 2009   BELL 10.6 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \gamma}}$ $65$ $\pm23$ $\pm17$ 52 ABLIKIM 2008 F   BES ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \eta}}{{\mathit \phi}}{{\mathit f}_{{{0}}}{(980)}}$ $61$ $\pm50$ $\pm13$ 483 AUBERT 2008 S   BABR 10.6 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \phi}}{{\mathit \eta}}{{\mathit \gamma}}$ $71$ $\pm21$ 116 15 AUBERT 2007 AK   BABR 10.6 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \gamma}}$ $102$ $\pm27$ 149 15 AUBERT 2007 AK   BABR 10.6 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \pi}^{0}}{{\mathit \pi}^{0}}{{\mathit \gamma}}$ $58$ $\pm16$ $\pm20$ 201 13, 16 AUBERT,BE 2006 D   BABR 10.6 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \pi}}{{\mathit \pi}}{{\mathit \gamma}}$ 1  Seen in ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit K}^{*}{(892)}^{0}}{{\overline{\mathit K}}^{0}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit K}_L^0}$ ${{\mathit \pi}^{0}}$ with a significance of 3.2$\sigma $. 2  From a fit to the ${{\mathit e}^{+}}{{\mathit e}^{-}}$ cross section between 2.00 and 3.08 GeV with a sum of Breit-Wigner amplitude and a non-resonant contribution. 3  By a simultaneous fit of the ${{\mathit K}_{{{2}}}^{*}{(1430)}^{+}}{{\mathit K}^{-}}$ and ${{\mathit K}^{*}{(892)}^{+}}{{\mathit K}^{-}}$ intermediate channels in a partial-wave analysis, assuming the same structure, modelled with a coherent sum of a nonresonant component and a resonant component by a Breit-Wigner function. 4  From a fit to the cross section below 3.5 GeV measured by BaBar and BESIII with a coherent sum of two modified Breit-Wigner amplitudes (${{\mathit \phi}{(1680)}}$ and ${{\mathit \phi}{(2170)}}$) and a nonresonant term. 5  From a fit using a coherent sum of a phase-space modified Breit-Wigner function and a phase-space term. 6  By a simultaneous fit of the intermediate channels in a partial-wave analysis, assuming the same structure, modelled with a coherent sum of a nonresonant component and a resonant component by a Breit-Wigner function. 7  From the combined analysis of the cross sections for ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}}$ and ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit K}_L^0}$ using data from ABLIKIM 2019L and ABLIKIM 2021AP. The parametrisation includes the interference between direct coupling process and resonance intermediate process with the isospin factor fixed to one. Other solutions which include additional vector resonances give $85.9$ $\pm8.6$ MeV and $86.4$ $\pm8.9$ MeV. 8  From a VDM fit to ZHU 2023 ${{\mathit \eta}}{{\mathit \phi}}{{\mathit \gamma}}$ data with two resonances, ${{\mathit \phi}{(1680)}}$, ${{\mathit \phi}{(2170)}}$, and a third resonance with mass $1850.7$ $\pm5.3$ MeV and width $25$ $\pm35$ MeV of 1.7 $\sigma $ statistical evidence. 9  From the analysis of the combined measurements of ${\mathit \sigma (}{{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \eta}}{{\mathit \phi}}{)}$ from BaBar, Belle, BESIII, CMD3. The statistical significance for ${{\mathit \phi}{(2170)}}$ is 7.2 $\sigma $. 10  From a fit to the cross section between 2.00 and 3.08 GeV with a sum of Breit-Wigner amplitude and a nonresonant contribution. The observed structure can be also due to ${{\mathit \rho}{(2150)}}$. 11  The observed structure can be due to both the ${{\mathit \phi}{(2170)}}$ and ${{\mathit \rho}{(2150)}}$. 12  Fit includes interference with the ${{\mathit \phi}{(1680)}}$. 13  From the ${{\mathit \phi}}{{\mathit f}_{{{0}}}{(980)}}$ component. 14  From a fit with two incoherent Breit-Wigners. 15  From the ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit f}_{{{0}}}{(980)}}$ component. 16  Superseded by LEES 2012F.

${{\mathit \phi}{(2170)}}$ WIDTH (MeV)

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