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${{\mathit \phi}{(1020)}}$ WIDTH

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VALUE (MeV) EVTS DOCUMENT ID TECN  COMMENT $\bf{ 4.249 \pm0.013}$ OUR AVERAGE  Error includes scale factor of 1.1. $4.245$ $\pm0.013$ 2.3M 1 KOZYREV 2018 CMD3 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}$ , ${{\mathit K}_S^0}$ ${{\mathit K}_L^0}$ $4.205$ $\pm0.103$ $\pm0.067$ 28k 2 LEES 2014 H BABR ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit K}_L^0}$ ${{\mathit \gamma}}$ $4.29$ $\pm0.04$ $\pm0.07$ 3 LEES 2013 Q BABR ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \gamma}}$ $4.30$ $\pm0.06$ $\pm0.17$ 105k AKHMETSHIN 2006 CMD2 $0.98 - 1.06$ ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}$ $4.280$ $\pm0.033$ $\pm0.025$ 272k 4 AKHMETSHIN 2004 CMD2 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit K}_L^0}$ ${{\mathit K}_S^0}$ $4.21$ $\pm0.04$ 1900k 5 ACHASOV 2001 E SND ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}$ , ${{\mathit K}_{{S}}}{{\mathit K}_{{L}}}$ , ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}$ $4.44$ $\pm0.09$ 55600 AKHMETSHIN 1995 CMD2 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ hadrons $4.5$ $\pm0.7$ 1500 ARENTON 1982 AEMS 11.8 polar. ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit K}}{{\mathit K}}$ $4.2$ $\pm0.6$ 766 6 IVANOV 1981 OLYA 1$-$1.4 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}$ $4.3$ $\pm0.6$ 6 CORDIER 1980 DM1 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}$ $4.36$ $\pm0.29$ 3681 6 BUKIN 1978 C OLYA ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ hadrons $4.4$ $\pm0.6$ 984 6 BESCH 1974 CNTR 2 ${{\mathit \gamma}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit p}}{{\mathit K}^{+}}{{\mathit K}^{-}}$ $4.67$ $\pm0.72$ 681 6 BALAKIN 1971 OSPK ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ hadrons $4.09$ $\pm0.29$ BIZOT 1970 OSPK ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ hadrons • • We do not use the following data for averages, fits, limits, etc. • • $4.07$ $\pm0.13$ $\pm0.01$ 7 HOID 2020 RVUE ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{0}}{{\mathit \gamma}}$ $4.23$ $\pm0.04$ $\pm0.02$ 8 HOFERICHTER 2019 RVUE ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}$ $4.249$ $\pm0.015$ 1.7M KOZYREV 2018 CMD3 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}$ $4.240$ $\pm0.017$ 610k KOZYREV 2016 CMD3 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit K}_L^0}$ $4.37$ $\pm0.02$ LEES 2013 F BABR ${{\mathit D}^{+}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \pi}^{+}}$ $4.24$ $\pm0.02$ $\pm0.03$ 542k 9 AKHMETSHIN 2008 CMD2 1.02 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}$ $4.28$ $\pm0.13$ 12540 10 AUBERT,B 2005 J BABR ${{\mathit D}^{0}}$ $\rightarrow$ ${{\overline{\mathit K}}^{0}}{{\mathit K}^{+}}{{\mathit K}^{-}}$ $4.45$ $\pm0.06$ 271k DIJKSTRA 1986 SPEC 100 ${{\mathit \pi}^{-}}{}^{}\mathrm {Be}$ $3.6$ $\pm0.8$ 337 6 COOPER 1978 B HBC 0.7$-$0.8 ${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit K}_L^0}$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ $4.5$ $\pm0.50$ 1300 10, 6 AKERLOF 1977 SPEC 400 ${{\mathit p}}$ ${}^{}\mathrm {A}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}$ X $4.5$ $\pm0.8$ 500 10, 6 AYRES 1974 ASPK 3$-$6 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit n}}$ , ${{\mathit K}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \Lambda}}$ $/{{\mathit \Sigma}^{0}}$ $3.81$ $\pm0.37$ COSME 1974 B OSPK ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit K}_L^0}$ ${{\mathit K}_S^0}$ $3.8$ $\pm0.7$ 454 6 BORENSTEIN 1972 HBC 2.18 ${{\mathit K}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit K}}{{\overline{\mathit K}}}{{\mathit n}}$ 1  Average of KOZYREV 2016 and KOZYREV 2018 values taking into account the correlated uncertainties. Supersedes individual KOZYREV 2016 and KOZYREV 2018 results. 2  Using a vector meson dominance model with contribution from ${{\mathit \phi}{(1020)}}$ and higher mass excitations of ${{\mathit \rho}{(770)}}$ , ${{\mathit \omega}{(782)}}$ , and ${{\mathit \phi}{(1020)}}$ . 3  Using a phenomenological model based on KUHN 1990 with a sum of Breit-Wigner resonances for ${{\mathit \rho}{(770)}}$ , ${{\mathit \omega}{(782)}}$ , ${{\mathit \phi}{(1020)}}$ and their higher mass excitations. 4  Update of AKHMETSHIN 1999D 5  From the combined fit assuming that the total ${{\mathit \phi}{(1020)}}$ production cross section is saturated by those of ${{\mathit K}^{+}}{{\mathit K}^{-}}$ , ${{\mathit K}_{{S}}}{{\mathit K}_{{L}}}$ , ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}$ , and ${{\mathit \eta}}{{\mathit \gamma}}$ decays modes and using ACHASOV 2000B for the ${{\mathit \eta}}{{\mathit \gamma}}$ decay mode. 6  Width errors enlarged by us to 4${}\Gamma /\sqrt {\mathit N }$; see the note with the ${{\mathit K}^{*}{(892)}}$ mass. 7  The values were extracted from a dispersively improved Breit-Wigner parameterization. 8  The values were extracted from a dispersively improved Breit-Wigner parameterization and do not include vacuum polarization. 9  Strongly correlated with AKHMETSHIN 2004 . 10  Systematic errors not evaluated.

References:

HOID 2020 EPJ C80 988 Hadronic vacuum polarization and vector-meson resonance parameters from $e^+e^-\rightarrow \pi ^0\gamma$ HOFERICHTER 2019 JHEP 1908 137 Three-pion contribution to hadronic vacuum polarization KOZYREV 2018 PL B779 64 Study of the Process ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}$ in the Center-of-Mass Energy Range $1010 - 1060$ MeV with the CMD-3 Detector KOZYREV 2016 PL B760 314 Study of the Process ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit K}_L^0}$ in the Center-of-Mass Energy Range $1004 - 1060$ MeV with the CMD-3 Detector at the VEPP-2000 ${{\mathit e}^{+}}{{\mathit e}^{-}}$ Collider 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 2013F PR D87 052010 Search for Direct $\mathit CP$ Violation in Singly Cabibbo-Suppressed ${{\mathit D}^{\pm}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \pi}^{\pm}}$ Decays LEES 2013Q PR D88 032013 Precision Measurement of the ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}$( ${{\mathit \gamma}}$) Cross Section with the Initial-State Radiation Method at BaBar AKHMETSHIN 2008 PL B669 217 Measurement of ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \phi}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}$ Cross Section with CMD-2 Detector at VEPP-2M Collider AKHMETSHIN 2006 PL B642 203 Study of ${{\mathit \phi}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}$ with CMD-2 Detector AUBERT,B 2005J PR D72 052008 Dalitz Plot Analysis of ${{\mathit D}^{0}}$ $\rightarrow$ ${{\overline{\mathit K}}^{0}}{{\mathit K}^{+}}{{\mathit K}^{-}}$ AKHMETSHIN 2004 PL B578 285 Reanalysis of Hadronic Cross Section Measurements at CMD-2 ACHASOV 2001E PR D63 072002 Measurements of the Parameters of the ${{\mathit \phi}{(1020)}}$ Resonance through Studies of the Processes ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}$ , ${{\mathit K}_S^0}$ ${{\mathit K}_L^0}$ , and ${{\mathit \pi}^{+}}$ ${{\mathit \pi}^{-}}$ ${{\mathit \pi}^{0}}$ AKHMETSHIN 1995 PL B364 199 Measurement of ${{\mathit \phi}}$ -Meson Parameters with CMD-2 Detector at VEPP-2M Collider DIJKSTRA 1986 ZPHY C31 375 High Statistics Inclusive ${{\mathit \phi}}$ Meson Production at SPS Energy ARENTON 1982 PR D25 2241 ${{\mathit \phi}}$ Meson Production in the Reaction ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit p}}{{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit p}}$ at 11.75 ${\mathrm {GeV/}}\mathit c$ IVANOV 1981 PL 107B 297 Measurement of the Charged Kaon Formfactor in the Energy Range 1.0 to 1.4 GeV Also Private Comm. Private Communication CORDIER 1980 NP B172 13 Cross Section of the Reaction ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}$ for Center-of-Mass Energies from 750 to 1100 MeV BUKIN 1978C SJNP 27 516 The ${{\mathit \phi}}$ Meson: Precision Measurement of its Mass, Observation of the ${{\mathit \omega}}$ ${{\mathit \phi}}$ Interference COOPER 1978B NP B146 1 ${{\mathit \phi}}$ and ${{\mathit \omega}}$ Meson Production in ${{\overline{\mathit p}}}$ ${{\mathit p}}$ Annihilations at $0.70 - 0.76$ ${\mathrm {GeV/}}\mathit c$ and the OZI Rule AKERLOF 1977 PRL 39 861 Measurement of ${{\mathit \phi}}$ Production in Proton Nucleus Collisions at 400 ${\mathrm {GeV/}}\mathit c$ AYRES 1974 PRL 32 1463 ${{\mathit \phi}}$ Meson Production in ${{\mathit \pi}^{-}}{{\mathit p}}$ and ${{\mathit K}^{-}}{{\mathit p}}$ Interactions from 3 to 6 ${\mathrm {GeV/}}\mathit c$ BESCH 1974 NP B70 257 Photoproduction of ${{\mathit \phi}}$ Mesons on Protons at 2.0 GeV COSME 1974B PL 48B 159 ${{\mathit K}_S^0}$ ${{\mathit K}_L^0}$ Production by ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ Annihilation at ${{\mathit \phi}}$ Energy BORENSTEIN 1972 PR D5 1559 Reaction ${{\mathit K}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \Xi}^{-}}{{\mathit K}^{0}}{{\mathit \pi}^{+}}$ at 2.18 ${\mathrm {GeV/}}\mathit c$ BALAKIN 1971 PL 34B 328 Investigation of the ${{\mathit \phi}}$ Meson Resonance by Electron Positron Colliding Beams BIZOT 1970 PL 32B 416 Study of the ${{\mathit \phi}}$ Meson by ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ Annihilation into Charged ${{\mathit K}}$ Mesons and Tests of Vector Dominance Models Also Liverpool Sym. 69 Experiments with the Orsay Storage Ring ACO