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${{\mathit f}_{{{0}}}{(980)}}$ MASS

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M003M1

VALUE (MeV) EVTS DOCUMENT ID TECN  COMMENT $\bf{ 990 \pm20}$ OUR ESTIMATE • • We do not use the following data for averages, fits, limits, etc. • • $992.0$ ${}^{+8.5}_{-7.5}$ $\pm8.6$ 1 AAIJ 2019 H LHCB ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit D}^{\pm}}{{\mathit X}}$ $989.4$ $\pm1.3$ 424 ABLIKIM 2015 P BES3 ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}$3 ${{\mathit \pi}}$ $989.9$ $\pm0.4$ 706 ABLIKIM 2012 E BES3 ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \gamma}}$3 ${{\mathit \pi}}$ $977$ ${}^{+11}_{-9}$ $\pm1$ 44 2 ECKLUND 2009 CLEO 4.17 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit D}_{{{s}}}^{-}}{{\mathit D}_{{{s}}}^{*+}}$ + c.c. $982.2$ $\pm1.0$ ${}^{+8.1}_{-8.0}$ 3 UEHARA 2008 A BELL 10.6 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit e}^{-}}{{\mathit \pi}^{0}}{{\mathit \pi}^{0}}$ $976.8$ $\pm0.3$ ${}^{+10.1}_{-0.6}$ 64k 4 AMBROSINO 2007 KLOE 1.02 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{0}}{{\mathit \pi}^{0}}{{\mathit \gamma}}$ $984.7$ $\pm0.4$ ${}^{+2.4}_{-3.7}$ 64k 5 AMBROSINO 2007 KLOE 1.02 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{0}}{{\mathit \pi}^{0}}{{\mathit \gamma}}$ $973$ $\pm3$ $262$ $\pm30$ 6 AUBERT 2007 AK BABR 10.6 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \phi}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \gamma}}$ $970$ $\pm7$ $54$ $\pm9$ 6 AUBERT 2007 AK BABR 10.6 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \phi}}{{\mathit \pi}^{0}}{{\mathit \pi}^{0}}{{\mathit \gamma}}$ $953$ $\pm20$ 2.6k 7 BONVICINI 2007 CLEO ${{\mathit D}^{+}}$ $\rightarrow$ ${{\mathit \pi}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{+}}$ $985.6$ ${}^{+1.2}_{-1.5}$ ${}^{+1.1}_{-1.6}$ 8 MORI 2007 BELL 10.6 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit e}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ $983.0$ $\pm0.6$ ${}^{+4.0}_{-3.0}$ 9 AMBROSINO 2006 B KLOE 1.02 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \gamma}}$ $977.3$ $\pm0.9$ ${}^{+3.7}_{-4.3}$ 10 AMBROSINO 2006 B KLOE 1.02 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \gamma}}$ $950$ $\pm9$ 4286 11 GARMASH 2006 BELL ${{\mathit B}^{+}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ $965$ $\pm10$ 12 ABLIKIM 2005 BES2 ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \phi}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$, ${{\mathit \phi}}{{\mathit K}^{+}}{{\mathit K}^{-}}$ $1031$ $\pm8$ 13 ANISOVICH 2003 RVUE $1037$ $\pm31$ TIKHOMIROV 2003 SPEC 40.0 ${{\mathit \pi}^{-}}$ ${}^{}\mathrm {C}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit K}_S^0}$ ${{\mathit K}_L^0}$ X $973$ $\pm1$ 2438 14 ALOISIO 2002 D KLOE ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{0}}{{\mathit \pi}^{0}}{{\mathit \gamma}}$ $977$ $\pm3$ $\pm2$ 848 15 AITALA 2001 A E791 ${{\mathit D}_{{{s}}}^{+}}$ $\rightarrow$ ${{\mathit \pi}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{+}}$ $969.8$ $\pm4.5$ 419 16 ACHASOV 2000 H SND ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{0}}{{\mathit \pi}^{0}}{{\mathit \gamma}}$ $985$ ${}^{+16}_{-12}$ 419 17, 18 ACHASOV 2000 H SND ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{0}}{{\mathit \pi}^{0}}{{\mathit \gamma}}$ $976$ $\pm5$ $\pm6$ 19 AKHMETSHIN 1999 B CMD2 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \gamma}}$ $977$ $\pm3$ $\pm6$ 268 19 AKHMETSHIN 1999 C CMD2 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{0}}{{\mathit \pi}^{0}}{{\mathit \gamma}}$ $975$ $\pm4$ $\pm6$ 20 AKHMETSHIN 1999 C CMD2 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{0}}{{\mathit \pi}^{0}}{{\mathit \gamma}}$ $975$ $\pm4$ $\pm6$ 21 AKHMETSHIN 1999 C CMD2 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \gamma}}$, ${{\mathit \pi}^{0}}{{\mathit \pi}^{0}}{{\mathit \gamma}}$ $985$ $\pm10$ BARBERIS 1999 OMEG 450 ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit p}_{{{s}}}}{{\mathit p}_{{{f}}}}{{\mathit K}^{+}}{{\mathit K}^{-}}$ $982$ $\pm3$ BARBERIS 1999 B OMEG 450 ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit p}_{{{s}}}}{{\mathit p}_{{{f}}}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ $982$ $\pm3$ BARBERIS 1999 C OMEG 450 ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit p}_{{{s}}}}{{\mathit p}_{{{f}}}}{{\mathit \pi}^{0}}{{\mathit \pi}^{0}}$ $987$ $\pm6$ $\pm6$ 22 BARBERIS 1999 D OMEG 450 ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}$, ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ $989$ $\pm15$ BELLAZZINI 1999 GAM4 450 ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit p}}{{\mathit p}}{{\mathit \pi}^{0}}{{\mathit \pi}^{0}}$ $991$ $\pm3$ 23 KAMINSKI 1999 RVUE ${{\mathit \pi}}$ ${{\mathit \pi}}$ $\rightarrow$ ${{\mathit \pi}}{{\mathit \pi}}$, ${{\mathit K}}{{\overline{\mathit K}}}$, ${{\mathit \sigma}}{{\mathit \sigma}}$ $\sim{}\text{ 980}$ 23 OLLER 1999 RVUE ${{\mathit \pi}}$ ${{\mathit \pi}}$ $\rightarrow$ ${{\mathit \pi}}{{\mathit \pi}}$, ${{\mathit K}}{{\overline{\mathit K}}}$ $\sim{}\text{ 993.5}$ OLLER 1999 B RVUE ${{\mathit \pi}}$ ${{\mathit \pi}}$ $\rightarrow$ ${{\mathit \pi}}{{\mathit \pi}}$, ${{\mathit K}}{{\overline{\mathit K}}}$ $\sim{}\text{ 987}$ 23 OLLER 1999 C RVUE ${{\mathit \pi}}$ ${{\mathit \pi}}$ $\rightarrow$ ${{\mathit \pi}}{{\mathit \pi}}$, ${{\mathit K}}{{\overline{\mathit K}}}$, ${{\mathit \eta}}{{\mathit \eta}}$ $957$ $\pm6$ 24 ACKERSTAFF 1998 Q OPAL ${{\mathit Z}}$ $\rightarrow$ ${{\mathit f}_{{{0}}}}$ X $960$ $\pm10$ ALDE 1998 GAM4 $1015$ $\pm15$ 23 ANISOVICH 1998 B RVUE Compilation $1008$ 25 LOCHER 1998 RVUE ${{\mathit \pi}}$ ${{\mathit \pi}}$ $\rightarrow$ ${{\mathit \pi}}{{\mathit \pi}}$ , ${{\mathit K}}{{\overline{\mathit K}}}$ $955$ $\pm10$ 24 ALDE 1997 GAM2 450 ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit p}}{{\mathit p}}{{\mathit \pi}^{0}}{{\mathit \pi}^{0}}$ $994$ $\pm9$ 26 BERTIN 1997 C OBLX 0.0 ${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}$ $993.2$ $\pm6.5$ $\pm6.9$ 27 ISHIDA 1996 RVUE ${{\mathit \pi}}$ ${{\mathit \pi}}$ $\rightarrow$ ${{\mathit \pi}}{{\mathit \pi}}$, ${{\mathit K}}{{\overline{\mathit K}}}$ $1006$ TORNQVIST 1996 RVUE ${{\mathit \pi}}$ ${{\mathit \pi}}$ $\rightarrow$ ${{\mathit \pi}}{{\mathit \pi}}$, ${{\mathit K}}{{\overline{\mathit K}}}$, ${{\mathit K}}{{\mathit \pi}}$, ${{\mathit \eta}}{{\mathit \pi}}$ $997$ $\pm5$ 3k 28 ALDE 1995 B GAM2 38 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}^{0}}{{\mathit \pi}^{0}}{{\mathit n}}$ $960$ $\pm10$ 10k 29 ALDE 1995 B GAM2 38 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}^{0}}{{\mathit \pi}^{0}}{{\mathit n}}$ $994$ $\pm5$ AMSLER 1995 B CBAR $0.0$ ${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ 3 ${{\mathit \pi}^{0}}$ $\sim{}\text{ 996}$ 30 AMSLER 1995 D CBAR 0.0 ${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}^{0}}{{\mathit \pi}^{0}}{{\mathit \pi}^{0}}$, ${{\mathit \pi}^{0}}{{\mathit \eta}}{{\mathit \eta}}$, ${{\mathit \pi}^{0}}{{\mathit \pi}^{0}}{{\mathit \eta}}$ $987$ $\pm6$ 31 ANISOVICH 1995 RVUE $1015$ JANSSEN 1995 RVUE ${{\mathit \pi}}$ ${{\mathit \pi}}$ $\rightarrow$ ${{\mathit \pi}}{{\mathit \pi}}$, ${{\mathit K}}{{\overline{\mathit K}}}$ $983$ 32 BUGG 1994 RVUE ${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \eta}}$2 ${{\mathit \pi}^{0}}$ $973$ $\pm2$ 33 KAMINSKI 1994 RVUE ${{\mathit \pi}}$ ${{\mathit \pi}}$ $\rightarrow$ ${{\mathit \pi}}{{\mathit \pi}}$, ${{\mathit K}}{{\overline{\mathit K}}}$ $988$ 34 ZOU 1994 B RVUE $988$ $\pm10$ 35 MORGAN 1993 RVUE ${{\mathit \pi}}$ ${{\mathit \pi}}$ ${{\mathit K}}$ ${{\overline{\mathit K}}}$ $\rightarrow$ ${{\mathit \pi}}{{\mathit \pi}}$( ${{\mathit K}}{{\overline{\mathit K}}}$), ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \phi}}{{\mathit \pi}}{{\mathit \pi}}$( ${{\mathit K}}{{\overline{\mathit K}}}$), ${{\mathit D}_{{{s}}}}$ $\rightarrow$ ${{\mathit \pi}}$( ${{\mathit \pi}}{{\mathit \pi}}$) $971.1$ $\pm4.0$ 24 AGUILAR-BENIT.. 1991 EHS 400 ${{\mathit p}}{{\mathit p}}$ $979$ $\pm4$ 36 ARMSTRONG 1991 OMEG 300 ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit p}}{{\mathit p}}{{\mathit \pi}}{{\mathit \pi}}$ , ${{\mathit p}}{{\mathit p}}{{\mathit K}}{{\overline{\mathit K}}}$ $956$ $\pm12$ BREAKSTONE 1990 SFM ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit p}}{{\mathit p}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ $959.4$ $\pm6.5$ 24 AUGUSTIN 1989 DM2 ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \omega}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ $978$ $\pm9$ 24 ABACHI 1986 B HRS ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ X $985.0$ ${}^{+9.0}_{-39.0}$ ETKIN 1982 B MPS 23 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit n}}$2 ${{\mathit K}_S^0}$ $974$ $\pm4$ 36 GIDAL 1981 MRK2 ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ X $975$ 37 ACHASOV 1980 RVUE $986$ $\pm10$ 36 AGUILAR-BENIT.. 1978 HBC 0.7 ${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit K}_S^0}$ $969$ $\pm5$ 36 LEEPER 1977 ASPK 2$-$2.4 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit n}}$ , ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit n}}$ $987$ $\pm7$ 36 BINNIE 1973 CNTR ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit n}}$ MM $1012$ $\pm6$ 38 GRAYER 1973 ASPK 17 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit n}}$ $1007$ $\pm20$ 38 HYAMS 1973 ASPK 17 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit n}}$ $997$ $\pm6$ 38 PROTOPOPESCU 1973 HBC 7 ${{\mathit \pi}^{+}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit p}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ 1  From the ${{\mathit D}^{\pm}}$ $\rightarrow$ ${{\mathit K}^{\pm}}{{\mathit K}^{+}}{{\mathit K}^{-}}$ Dalitz plot fit with the Triple-M amplitude in the multimeson model of AOUDE 2018. 2  Using a relativistic Breit-Wigner function and taking into account the finite ${{\mathit D}_{{{s}}}}$ mass. 3  Breit-Wigner mass. Using finite width corrections according to FLATTE 1976 and ACHASOV 2005, and the ratio $\mathit g_{{{\mathit f}_{{{0}}}} {{\mathit K}} {{\mathit K}}}/\mathit g_{{{\mathit f}_{{{0}}}} {{\mathit \pi}} {{\mathit \pi}}}$ = 0. 4  In the kaon-loop fit. 5  In the no-structure fit. 6  Systematic errors not estimated. 7  FLATTE 1976 parameterization. g$_{{{\mathit f}_{{{0}}}} {{\mathit \pi}} {{\mathit \pi}}}$ = $329$ $\pm96$ MeV/c${}^{2}$ assuming g$_{{{\mathit f}_{{{0}}}} {{\mathit K}} {{\overline{\mathit K}}}}$/g$_{{{\mathit f}_{{{0}}}} {{\mathit \pi}} {{\mathit \pi}}}$=2. 8  Breit-Wigner mass. Using finite width corrections according to FLATTE 1976 and ACHASOV 2005, and the ratio $\mathit g_{{{\mathit f}_{{{0}}}} {{\mathit K}} {{\mathit K}}}/\mathit g_{{{\mathit f}_{{{0}}}} {{\mathit \pi}} {{\mathit \pi}}}$ = $4.21$ $\pm0.25$ $\pm0.21$ from ABLIKIM 2005. 9  In the kaon-loop fit following formalism of ACHASOV 1989. 10  In the no-structure fit assuming a direct coupling of ${{\mathit \phi}}$ to ${{\mathit f}_{{{0}}}}{{\mathit \gamma}}$. 11  FLATTE 1976 parameterization. Supersedes GARMASH 2005. 12  FLATTE 1976 parameterization, $\mathit g_{{{\mathit f}_{{{0}}}} {{\mathit K}} {{\overline{\mathit K}}}}/\mathit g_{{{\mathit f}_{{{0}}}} {{\mathit \pi}} {{\mathit \pi}}}$ = $4.21$ $\pm0.25$ $\pm0.21$. 13  K-matrix pole from combined analysis of ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}^{0}}{{\mathit \pi}^{0}}{{\mathit n}}$, ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit K}}{{\overline{\mathit K}}}{{\mathit n}}$, ${{\mathit \pi}^{+}}$ ${{\mathit \pi}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$, ${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}^{0}}{{\mathit \pi}^{0}}{{\mathit \pi}^{0}}$, ${{\mathit \pi}^{0}}{{\mathit \eta}}{{\mathit \eta}}$, ${{\mathit \pi}^{0}}{{\mathit \pi}^{0}}{{\mathit \eta}}$, ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}$, ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \pi}^{0}}$, ${{\mathit K}_S^0}$ ${{\mathit K}_S^0}$ ${{\mathit \pi}^{0}}$, ${{\mathit K}^{+}}{{\mathit K}_S^0}$ ${{\mathit \pi}^{-}}$ at rest, ${{\overline{\mathit p}}}$ ${{\mathit n}}$ $\rightarrow$ ${{\mathit \pi}^{-}}{{\mathit \pi}^{-}}{{\mathit \pi}^{+}}$, ${{\mathit K}_S^0}$ ${{\mathit K}^{-}}{{\mathit \pi}^{0}}$, ${{\mathit K}_S^0}$ ${{\mathit K}_S^0}$ ${{\mathit \pi}^{-}}$ at rest. 14  From the negative interference with the ${{\mathit f}_{{{0}}}{(500)}}$ meson of AITALA 2001B using the ACHASOV 1989 parameterization for the ${{\mathit f}_{{{0}}}{(980)}}$, a Breit-Wigner for the ${{\mathit f}_{{{0}}}{(500)}}$, and ACHASOV 2001F for the ${{\mathit \rho}}{{\mathit \pi}}$ contribution. 15  Coupled-channel Breit-Wigner, couplings $\mathit g_{{{\mathit \pi}}}=0.09$ $\pm0.01$ $\pm0.01$, $\mathit g_{{{\mathit K}}}=0.02$ $\pm0.04$ $\pm0.03$. 16  Supersedes ACHASOV 1998I. Using the model of ACHASOV 1989. 17  Supersedes ACHASOV 1998I. 18  In the ``narrow resonance'' approximation. 19  Assuming $\Gamma\mathrm {({{\mathit f}_{{{0}}}})}$= 40 MeV. 20  From a narrow pole fit taking into account ${{\mathit f}_{{{0}}}{(980)}}$ and ${{\mathit f}_{{{0}}}{(1200)}}$ intermediate mechanisms. 21  From the combined fit of the photon spectra in the reactions ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \gamma}}$, ${{\mathit \pi}^{0}}{{\mathit \pi}^{0}}{{\mathit \gamma}}$. 22  Supersedes BARBERIS 1999 and BARBERIS 1999B 23  T-matrix pole. 24  From invariant mass fit. 25  On sheet II in a 2 pole solution. The other pole is found on sheet$~$III at (1039$−93\mathit i$) MeV. 26  On sheet II in a 2 pole solution. The other pole is found on sheet III at (963-29i) MeV. 27  Reanalysis of data from HYAMS 1973, GRAYER 1974, SRINIVASAN 1975, and ROSSELET 1977 using the interfering amplitude method. 28  At high $\vert {{\mathit t}}\vert $. 29  At low $\vert {{\mathit t}}\vert $. 30  On sheet II in a 4-pole solution, the other poles are found on sheet$~$III at (953$−55\mathit i$) MeV and on sheet$~$IV at (938$−35\mathit i$) MeV. 31  Combined fit of ALDE 1995B, ANISOVICH 1994, AMSLER 1994D. 32  On sheet II in a 2 pole solution. The other pole is found on sheet$~$III at (996$-103\mathit i$) MeV. 33  From sheet II pole position. 34  On sheet II in a 2 pole solution. The other pole is found on sheet$~$III at (797$-185\mathit i$) MeV and can be interpreted as a shadow pole. 35  On sheet II in a 2 pole solution. The other pole is found on sheet$~$III at (978$-28\mathit i$) MeV. 36  From coupled channel analysis. 37  Coupled channel analysis with finite width corrections. 38  Included in AGUILAR-BENITEZ 1978 fit.

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