${{\boldsymbol f}_{{0}}{(980)}}$ MASS INSPIRE search

VALUE (MeV) EVTS DOCUMENT ID TECN  COMMENT
$\bf{ 990 \pm20}$ OUR ESTIMATE
• • • We do not use the following data for averages, fits, limits, etc. • • •
$989.4$ $\pm1.3$ 424
ABLIKIM
2015P
BES3 ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}$3 ${{\mathit \pi}}$
$989.9$ $\pm0.4$ 706
ABLIKIM
2012E
BES3 ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \gamma}}$3 ${{\mathit \pi}}$
$1003$ ${}^{+5}_{-27}$ 1, 2
GARCIA-MARTIN
2011
RVUE Compilation
$996$ $\pm7$ 1, 3
GARCIA-MARTIN
2011
RVUE Compilation
$996$ ${}^{+4}_{-14}$ 4
MOUSSALLAM
2011
RVUE Compilation
$981$ $\pm43$ 5
MENNESSIER
2010
RVUE Compilation
$1030$ ${}^{+30}_{-10}$ 6
ANISOVICH
2009
RVUE 0.0 ${{\overline{\mathit p}}}{{\mathit p}}$ , ${{\mathit \pi}}{{\mathit N}}$
$977$ ${}^{+11}_{-9}$ $\pm1$ 44 7
ECKLUND
2009
CLEO 4.17 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit D}_{{s}}^{-}}{{\mathit D}_{{s}}^{*+}}$ + c.c.
$982.2$ $\pm1.0$ ${}^{+8.1}_{-8.0}$ 8
UEHARA
2008A
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 9
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 10
AMBROSINO
2007
KLOE 1.02 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{0}}{{\mathit \pi}^{0}}{{\mathit \gamma}}$
$973$ $\pm3$ $262$ $\pm30$ 11
AUBERT
2007AK
BABR 10.6 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \phi}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \gamma}}$
$970$ $\pm7$ $54$ $\pm9$ 11
AUBERT
2007AK
BABR 10.6 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \phi}}{{\mathit \pi}^{0}}{{\mathit \pi}^{0}}{{\mathit \gamma}}$
$953$ $\pm20$ 2.6k 12
BONVICINI
2007
CLEO ${{\mathit D}^{+}}$ $\rightarrow$ ${{\mathit \pi}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{+}}$
$985.6$ ${}^{+1.2}_{-1.5}$ ${}^{+1.1}_{-1.6}$ 13
MORI
2007
BELL 10.6 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit e}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$
$983.0$ $\pm0.6$ ${}^{+4.0}_{-3.0}$ 14
AMBROSINO
2006B
KLOE 1.02 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \gamma}}$
$977.3$ $\pm0.9$ ${}^{+3.7}_{-4.3}$ 15
AMBROSINO
2006B
KLOE 1.02 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \gamma}}$
$950$ $\pm9$ 4286 16
GARMASH
2006
BELL ${{\mathit B}^{+}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$
$965$ $\pm10$ 17
ABLIKIM
2005
BES2 ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \phi}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ , ${{\mathit \phi}}{{\mathit K}^{+}}{{\mathit K}^{-}}$
$1031$ $\pm8$ 18
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 19
ALOISIO
2002D
KLOE ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{0}}{{\mathit \pi}^{0}}{{\mathit \gamma}}$
$977$ $\pm3$ $\pm2$ 848 20
AITALA
2001A
E791 ${{\mathit D}_{{s}}^{+}}$ $\rightarrow$ ${{\mathit \pi}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{+}}$
$969.8$ $\pm4.5$ 419 21
ACHASOV
2000H
SND ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{0}}{{\mathit \pi}^{0}}{{\mathit \gamma}}$
$985$ ${}^{+16}_{-12}$ 419 22, 23
ACHASOV
2000H
SND ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{0}}{{\mathit \pi}^{0}}{{\mathit \gamma}}$
$976$ $\pm5$ $\pm6$ 24
AKHMETSHIN
1999B
CMD2 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \gamma}}$
$977$ $\pm3$ $\pm6$ 268 24
AKHMETSHIN
1999C
CMD2 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{0}}{{\mathit \pi}^{0}}{{\mathit \gamma}}$
$975$ $\pm4$ $\pm6$ 25
AKHMETSHIN
1999C
CMD2 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{0}}{{\mathit \pi}^{0}}{{\mathit \gamma}}$
$975$ $\pm4$ $\pm6$ 26
AKHMETSHIN
1999C
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
1999B
OMEG 450 ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit p}_{{s}}}{{\mathit p}_{{f}}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$
$982$ $\pm3$
BARBERIS
1999C
OMEG 450 ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit p}_{{s}}}{{\mathit p}_{{f}}}{{\mathit \pi}^{0}}{{\mathit \pi}^{0}}$
$987$ $\pm6$ $\pm6$ 27
BARBERIS
1999D
OMEG 450 ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}$ , ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$
$989$ $\pm15$
BELLAZZINI
1999
GAM4 450 ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit p}}{{\mathit p}}{{\mathit \pi}^{0}}{{\mathit \pi}^{0}}$
$991$ $\pm3$ 28
KAMINSKI
1999
RVUE ${{\mathit \pi}}$ ${{\mathit \pi}}$ $\rightarrow$ ${{\mathit \pi}}{{\mathit \pi}}$ , ${{\mathit K}}{{\overline{\mathit K}}}$ , ${{\mathit \sigma}}{{\mathit \sigma}}$
$\sim{}\text{ 980}$ 28
OLLER
1999
RVUE ${{\mathit \pi}}$ ${{\mathit \pi}}$ $\rightarrow$ ${{\mathit \pi}}{{\mathit \pi}}$ , ${{\mathit K}}{{\overline{\mathit K}}}$
$\sim{}\text{ 993.5}$
OLLER
1999B
RVUE ${{\mathit \pi}}$ ${{\mathit \pi}}$ $\rightarrow$ ${{\mathit \pi}}{{\mathit \pi}}$ , ${{\mathit K}}{{\overline{\mathit K}}}$
$\sim{}\text{ 987}$ 28
OLLER
1999C
RVUE ${{\mathit \pi}}$ ${{\mathit \pi}}$ $\rightarrow$ ${{\mathit \pi}}{{\mathit \pi}}$ , ${{\mathit K}}{{\overline{\mathit K}}}$ , ${{\mathit \eta}}{{\mathit \eta}}$
$957$ $\pm6$ 29
ACKERSTAFF
1998Q
OPAL ${{\mathit Z}}$ $\rightarrow$ ${{\mathit f}_{{0}}}$ X
$960$ $\pm10$
ALDE
1998
GAM4
$1015$ $\pm15$ 28
ANISOVICH
1998B
RVUE Compilation
$1008$ 30
LOCHER
1998
RVUE ${{\mathit \pi}}$ ${{\mathit \pi}}$ $\rightarrow$ ${{\mathit \pi}}{{\mathit \pi}}$ , ${{\mathit K}}{{\overline{\mathit K}}}$
$955$ $\pm10$ 29
ALDE
1997
GAM2 450 ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit p}}{{\mathit p}}{{\mathit \pi}^{0}}{{\mathit \pi}^{0}}$
$994$ $\pm9$ 31
BERTIN
1997C
OBLX 0.0 ${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}$
$993.2$ $\pm6.5$ $\pm6.9$ 32
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 33
ALDE
1995B
GAM2 38 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}^{0}}{{\mathit \pi}^{0}}{{\mathit n}}$
$960$ $\pm10$ 10k 34
ALDE
1995B
GAM2 38 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}^{0}}{{\mathit \pi}^{0}}{{\mathit n}}$
$994$ $\pm5$
AMSLER
1995B
CBAR $0.0$ ${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ 3 ${{\mathit \pi}^{0}}$
$\sim{}\text{ 996}$ 35
AMSLER
1995D
CBAR 0.0 ${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}^{0}}{{\mathit \pi}^{0}}{{\mathit \pi}^{0}}$ , ${{\mathit \pi}^{0}}{{\mathit \eta}}{{\mathit \eta}}$ , ${{\mathit \pi}^{0}}{{\mathit \pi}^{0}}{{\mathit \eta}}$
$987$ $\pm6$ 36
ANISOVICH
1995
RVUE
$1015$
JANSSEN
1995
RVUE ${{\mathit \pi}}$ ${{\mathit \pi}}$ $\rightarrow$ ${{\mathit \pi}}{{\mathit \pi}}$ , ${{\mathit K}}{{\overline{\mathit K}}}$
$983$ 37
BUGG
1994
RVUE ${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \eta}}$2 ${{\mathit \pi}^{0}}$
$973$ $\pm2$ 38
KAMINSKI
1994
RVUE ${{\mathit \pi}}$ ${{\mathit \pi}}$ $\rightarrow$ ${{\mathit \pi}}{{\mathit \pi}}$ , ${{\mathit K}}{{\overline{\mathit K}}}$
$988$ 39
ZOU
1994B
RVUE
$988$ $\pm10$ 40
MORGAN
1993
RVUE ${{\mathit \pi}}$ ${{\mathit \pi}}$ ${{\mathit K}}$ ${{\overline{\mathit K}}}$ $\rightarrow$ ${{\mathit \pi}}{{\mathit \pi}}$( ${{\mathit K}}{{\overline{\mathit K}}}$), ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \phi}}{{\mathit \pi}}{{\mathit \pi}}$( ${{\mathit K}}{{\overline{\mathit K}}}$), ${{\mathit D}_{{s}}}$ $\rightarrow$ ${{\mathit \pi}}$( ${{\mathit \pi}}{{\mathit \pi}}$)
$971.1$ $\pm4.0$ 29
AGUILAR-BENIT..
1991
EHS 400 ${{\mathit p}}{{\mathit p}}$
$979$ $\pm4$ 41
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 ${{\mathit p}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit p}}{{\mathit p}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$
$959.4$ $\pm6.5$ 29
AUGUSTIN
1989
DM2 ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \omega}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$
$978$ $\pm9$ 29
ABACHI
1986B
HRS ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ X
$985.0$ ${}^{+9.0}_{-39.0}$
ETKIN
1982B
MPS 23 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit n}}$2 ${{\mathit K}_S^0}$
$974$ $\pm4$ 41
GIDAL
1981
MRK2 ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ X
$975$ 42
ACHASOV
1980
RVUE
$986$ $\pm10$ 41
AGUILAR-BENIT..
1978
HBC 0.7 ${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit K}_S^0}$
$969$ $\pm5$ 41
LEEPER
1977
ASPK 2$-$2.4 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit n}}$ , ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit n}}$
$987$ $\pm7$ 41
BINNIE
1973
CNTR ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit n}}$ MM
$1012$ $\pm6$ 43
GRAYER
1973
ASPK 17 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit n}}$
$1007$ $\pm20$ 43
HYAMS
1973
ASPK 17 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit n}}$
$997$ $\pm6$ 43
PROTOPOPESCU
1973
HBC 7 ${{\mathit \pi}^{+}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit p}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$
1  Quoted number refers to real part of pole position.
2  Analytic continuation using Roy equations. Uses the ${{\mathit K}_{{e4}}}$ data of BATLEY 2010C and the ${{\mathit \pi}}$ ${{\mathit N}}$ $\rightarrow$ ${{\mathit \pi}}{{\mathit \pi}}{{\mathit N}}$ data of HYAMS 1973 , GRAYER 1974 , and PROTOPOPESCU 1973 .
3  Analytic continuation using GKPY equations. Uses the ${{\mathit K}_{{e4}}}$ data of BATLEY 2010C and the ${{\mathit \pi}}$ ${{\mathit N}}$ $\rightarrow$ ${{\mathit \pi}}{{\mathit \pi}}{{\mathit N}}$ data of HYAMS 1973 , GRAYER 1974 , and PROTOPOPESCU 1973 .
4  Pole position. Used Roy equations.
5  Average of the analyses of three data sets in the K-matrix model. Uses the data of BATLEY 2008A, HYAMS 1973 , and GRAYER 1974 , partially of COHEN 1980 or ETKIN 1982B.
6  On sheet II in a 2-pole solution. The other pole is found on sheet III at (850$−100\mathit i$) MeV
7  Using a relativistic Breit-Wigner function and taking into account the finite ${{\mathit D}_{{s}}}$ mass.
8  Breit-Wigner mass. Using finite width corrections according to FLATTE 1976 and ACHASOV 2005 , and the ratio $\mathit g_{ {{\mathit f}_{{0}}} {{\mathit K}} {{\mathit K}} }/\mathit g_{ {{\mathit f}_{{0}}} {{\mathit \pi}} {{\mathit \pi}} }$ = 0.
9  In the kaon-loop fit.
10  In the no-structure fit.
11  Systematic errors not estimated.
12  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.
13  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 .
14  In the kaon-loop fit following formalism of ACHASOV 1989 .
15  In the no-structure fit assuming a direct coupling of ${{\mathit \phi}}$ to ${{\mathit f}_{{0}}}{{\mathit \gamma}}$ .
16  FLATTE 1976 parameterization. Supersedes GARMASH 2005 .
17  FLATTE 1976 parameterization, $\mathit g_{ {{\mathit f}_{{0}}} {{\mathit K}} {{\overline{\mathit K}}} }/\mathit g_{ {{\mathit f}_{{0}}} {{\mathit \pi}} {{\mathit \pi}} }$ = $4.21$ $\pm0.25$ $\pm0.21$.
18  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.
19  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.
20  Coupled-channel Breit-Wigner, couplings $\mathit g_{{{\mathit \pi}}}=0.09$ $\pm0.01$ $\pm0.01$, $\mathit g_{{{\mathit K}}}=0.02$ $\pm0.04$ $\pm0.03$.
21  Supersedes ACHASOV 1998I. Using the model of ACHASOV 1989 .
22  Supersedes ACHASOV 1998I.
23  In the ``narrow resonance'' approximation.
24  Assuming $\Gamma\mathrm {({{\mathit f}_{{0}}})}$= 40 MeV.
25  From a narrow pole fit taking into account ${{\mathit f}_{{0}}{(980)}}$ and ${{\mathit f}_{{0}}{(1200)}}$ intermediate mechanisms.
26  From the combined fit of the photon spectra in the reactions ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \gamma}}$ , ${{\mathit \pi}^{0}}{{\mathit \pi}^{0}}{{\mathit \gamma}}$ .
27  Supersedes BARBERIS 1999 and BARBERIS 1999B
28  T-matrix pole.
29  From invariant mass fit.
30  On sheet II in a 2 pole solution. The other pole is found on sheet$~$III at (1039$−93\mathit i$) MeV.
31  On sheet II in a 2 pole solution. The other pole is found on sheet III at (963-29i) MeV.
32  Reanalysis of data from HYAMS 1973 , GRAYER 1974 , SRINIVASAN 1975 , and ROSSELET 1977 using the interfering amplitude method.
33  At high $\vert {{\mathit t}}\vert $.
34  At low $\vert {{\mathit t}}\vert $.
35  On sheet II in a 4-pole solution, the other poles are found on sheet$~$III at (953$−55\mathit i$) MeV and on sheet$~$IV at (938$−35\mathit i$) MeV.
36  Combined fit of ALDE 1995B, ANISOVICH 1994 , AMSLER 1994D.
37  On sheet II in a 2 pole solution. The other pole is found on sheet$~$III at (996$-103\mathit i$) MeV.
38  From sheet II pole position.
39  On sheet II in a 2 pole solution. The other pole is found on sheet$~$III at (797$-185\mathit i$) MeV and can be interpreted as a shadow pole.
40  On sheet II in a 2 pole solution. The other pole is found on sheet$~$III at (978$-28\mathit i$) MeV.
41  From coupled channel analysis.
42  Coupled channel analysis with finite width corrections.
43  Included in AGUILAR-BENITEZ 1978 fit.
  References:
ABLIKIM 2015P
PR D92 012007 Observation of the Isospin-Violating Decay ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \phi}}{{\mathit \pi}^{0}}{{\mathit f}_{{0}}{(980)}}$
ABLIKIM 2012E
PRL 108 182001 First Observation of ${{\mathit \eta}{(1405)}}$ Decays into ${{\mathit f}_{{0}}{(980)}}{{\mathit \pi}^{0}}$
GARCIA-MARTIN 2011
PRL 107 072001 Precise Determination of the ${{\mathit f}_{{0}}{(600)}}$ and ${{\mathit f}_{{0}}{(980)}}$ Pole Parameters from a Dispersive Data Analysis
MOUSSALLAM 2011
EPJ C71 1814 Couplings of Light $\mathit I = 0$ Scalar Mesons to Simple Operators in the Complex Plane
MENNESSIER 2010
PL B688 59 The ${{\mathit \sigma}}$ and ${{\mathit f}_{{0}}{(980)}}$ from ${{\mathit K}_{{e4}}}$⊕${{\mathit \pi}}{{\mathit \pi}}$ Scatterings Data
ANISOVICH 2009
IJMP A24 2481 The Combined Analysis of ${{\mathit \pi}}$ ${{\mathit N}}$ $\rightarrow$ two mesons ${+}$ ${{\mathit N}}$ Reactions within Reggeon Exchanges and Data for ${{\mathit p}}$ ${{\overline{\mathit p}}}$ (at rest) $\rightarrow$ three mesons
ECKLUND 2009
PR D80 052009 Study of the Semileptonic Decay ${{\mathit D}_{{s}}^{+}}$ $\rightarrow$ ${{\mathit f}_{{0}}{(980)}}{{\mathit e}^{+}}{{\mathit \nu}}$ and Implications for ${{\mathit B}_{{s}}^{0}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit f}_{{0}}}$
UEHARA 2008A
PR D78 052004 High-Statistics Measurement of Neutral-Pion Pair Production in Two-Photon Collisions
AMBROSINO 2007
EPJ C49 473 Dalitz Plot Analysis of ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{0}}{{\mathit \pi}^{0}}{{\mathit \gamma}}$ Events at $\sqrt {s }$ $\simeq{}$ $\mathit M_{{{\mathit \phi}}}$ with the KLOE Detector
AUBERT 2007AK
PR D76 012008 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ , ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \pi}^{0}}{{\mathit \pi}^{0}}$ and ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit K}^{+}}{{\mathit K}^{-}}$ Cross Sections Measured with Initial-State Radiation
BONVICINI 2007
PR D76 012001 Dalitz Plot Analysis of the ${{\mathit D}^{+}}$ $\rightarrow$ ${{\mathit \pi}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{+}}$ Decay
MORI 2007
PR D75 051101 High Statistics Study of the Resonance in ${{\mathit \gamma}}$ ${{\mathit \gamma}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ Production
AMBROSINO 2006B
PL B634 148 Study of the Decay ${{\mathit \phi}}$ $\rightarrow$ ${{\mathit \gamma}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \gamma}}$ with the KLOE Detector
GARMASH 2006
PRL 96 251803 Evidence for Large Direct $\mathit CP$ Violation in ${{\mathit B}^{\pm}}$ $\rightarrow$ ${{\mathit \rho}{(770)}^{0}}{{\mathit K}^{\pm}}$ from Analysis of Three-Body Charmless ${{\mathit B}^{\pm}}$ $\rightarrow$ ${{\mathit K}^{\pm}}{{\mathit \pi}^{\pm}}{{\mathit \pi}^{\pm}}$ Decays
ABLIKIM 2005
PL B607 243 Resonances in ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \phi}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ and ${{\mathit \phi}}{{\mathit K}^{+}}{{\mathit K}^{-}}$
ANISOVICH 2003
EPJ A16 229 K Matrix Analysis of the ($\mathit IJ{}^{PC}$ = 00${}^{++}$)-wave in the Mass Region below 1900 MeV
TIKHOMIROV 2003
PAN 66 828 Resonances in the ${{\mathit K}_S^0}$ ${{\mathit K}_S^0}$ ${{\mathit K}_L^0}$ System Produced in Collisions of Negative Pions with a Carbon Target at a Momentum of 40 GeV
ALOISIO 2002D
PL B537 21 Study of the Decay ${{\mathit \phi}}$ $\rightarrow$ ${{\mathit \pi}^{0}}{{\mathit \pi}^{0}}{{\mathit \gamma}}$ with the KLOE Detector
AITALA 2001A
PRL 86 765 Study of the ${{\mathit D}_{{s}}^{+}}$ $\rightarrow$ ${{\mathit \pi}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{+}}$ Decay Measurement of ${{\mathit f}_{{0}}}$ Masses and Widths
ACHASOV 2000H
PL B485 349 The ${{\mathit \phi}{(1020)}}$ $\rightarrow$ ${{\mathit \pi}^{0}}{{\mathit \pi}^{0}}{{\mathit \gamma}}$ Decay
AKHMETSHIN 1999C
PL B462 380 Study of the ${{\mathit \phi}}$ Decays into ${{\mathit \pi}^{0}}{{\mathit \pi}^{0}}{{\mathit \gamma}}$ and ${{\mathit \eta}}{{\mathit \pi}^{0}}{{\mathit \gamma}}$ Final States
AKHMETSHIN 1999B
PL B462 371 First Observation of the ${{\mathit \phi}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \gamma}}$ Decay
BARBERIS 1999D
PL B462 462 A Coupled Channel Analysis of the Centrally Produced ${{\mathit K}^{+}}{{\mathit K}^{-}}$ and ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ Final States in ${{\mathit p}}{{\mathit p}}$ Interactions at 450 ${\mathrm {GeV/}}\mathit c$
BARBERIS 1999
PL B453 305 A Partial Wave Analysis of the Centrally Produced ${{\mathit K}^{+}}{{\mathit K}^{-}}$ and ${{\mathit K}_S^0}$ ${{\mathit K}_S^0}$ Systems in ${{\mathit p}}{{\mathit p}}$ Interactions at 450 ${\mathrm {GeV/}}\mathit c$ and New Information on the Spin of the ${{\mathit f}_{{J}}{(1710)}}$
BARBERIS 1999B
PL B453 316 A Partial Wave Analysis of the Centrally Produced ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ System in ${{\mathit p}}{{\mathit p}}$ Interactions at 450 ${\mathrm {GeV/}}\mathit c$
BARBERIS 1999C
PL B453 325 A Partial Wave Analysis of the Centrally Produced ${{\mathit \pi}^{0}}{{\mathit \pi}^{0}}$ System in ${{\mathit p}}{{\mathit p}}$ Interactions at 450 ${\mathrm {GeV/}}\mathit c$
BELLAZZINI 1999
PL B467 296 A Partial Wave Analysis of the Centrally Produced ${{\mathit \pi}^{0}}{{\mathit \pi}^{0}}$ System in ${{\mathit p}}{{\mathit p}}$ Interactions at 450 ${\mathrm {GeV/}}\mathit c$
KAMINSKI 1999
EPJ C9 141 Scalar Mesons and Multichannel Amplitudes
OLLER 1999C
PR D60 074023 N/D Description of Two Meson Amplitudes and Chiral Symmetry
OLLER 1999B
NP A652 407 (erratum) Chiral Symmetry Amplitudes in the S-wave Isoscalar and Isovector Channels and the ${{\mathit \sigma}}$, ${{\mathit f}_{{0}}{(980)}}$, ${{\mathit a}_{{0}}{(980)}}$ Scalar Mesons
OLLER 1999
PR D60 099906 (erratum) Meson-Meson Interaction in a Nonperturbative Chiral Approach
ACKERSTAFF 1998Q
EPJ C4 19 Production of ${{\mathit f}_{{0}}{(980)}}$, ${{\mathit f}_{{2}}{(1270)}}$ and ${{\mathit \phi}{(1020)}}$ in Hadronic ${{\mathit Z}^{0}}$ Decay
ALDE 1998
EPJ A3 361 Study of the ${{\mathit \pi}^{0}}{{\mathit \pi}^{0}}$ System with the GAMS-4000 Spectrometer at 100 ${\mathrm {GeV/}}\mathit c$
ANISOVICH 1998B
SPU 41 419 The Lightest Scalar Glueball
LOCHER 1998
EPJ C4 317 Structure of ${{\mathit f}_{{0}}{(980)}}$ from a Coupled Channel Analysis of S-wave ${{\mathit \pi}}{{\mathit \pi}}$ Scattering
ALDE 1997
PL B397 350 Study of the ${{\mathit \pi}^{0}}{{\mathit \pi}^{0}}$ System in ${{\mathit p}}{{\mathit p}}$ Central Collisions at 450 ${\mathrm {GeV/}}\mathit c$
BERTIN 1997C
PL B408 476 Spin Parity Analysis of the Final State ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}$ from ${{\overline{\mathit p}}}{{\mathit p}}$ Annihilation at Rest in Hydrogen Targets at Three Densities
ISHIDA 1996
PTP 95 745 An Analysis of ${{\mathit \pi}}{{\mathit \pi}}$ Scattering Phase Shift and Existence of ${{\mathit \sigma}{(555)}}$ Particle
TORNQVIST 1996
PRL 76 1575 Resurrection of the ${{\mathit \sigma}}$ Meson
ALDE 1995B
ZPHY C66 375 Study of the ${{\mathit f}_{{0}}{(995)}}$ Resonance in the ${{\mathit \pi}^{0}}{{\mathit \pi}^{0}}$ Decay Channel
AMSLER 1995B
PL B342 433 High Statistical Study of ${{\mathit f}_{{0}}{(1500)}}$ Decay into ${{\mathit \pi}^{0}}{{\mathit \pi}^{0}}$
AMSLER 1995D
PL B355 425 Coupled Channel Analysis of ${{\overline{\mathit p}}}{{\mathit p}}$ Annihilation into ${{\mathit \pi}^{0}}{{\mathit \pi}^{0}}{{\mathit \pi}^{0}}$, ${{\mathit \pi}^{0}}{{\mathit \eta}}{{\mathit \eta}}$ and ${{\mathit \pi}^{0}}{{\mathit \pi}^{0}}{{\mathit \eta}}$
ANISOVICH 1995
PL B355 363 Two Resonance Structure of the ($\mathit I(\mathit J{}^{PC}) = 0(0{}^{++})$) ${{\mathit \pi}}{{\mathit \pi}}$ Amplitude in Mass Region around 1 GeV
JANSSEN 1995
PR D52 2690 On the Structure of the Scalar Mesons ${{\mathit f}_{{0}}{(975)}}$ and ${{\mathit a}_{{0}}{(980)}}$
BUGG 1994
PR D50 4412 Coupled Channel Analysis of Data on ${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ 3 ${{\mathit \pi}^{0}}$ , ${{\mathit \eta}}{{\mathit \eta}}{{\mathit \pi}^{0}}$, and ${{\mathit \eta}}{{\mathit \pi}^{0}}{{\mathit \pi}^{0}}$ at Rest, with the N/D Method
KAMINSKI 1994
PR D50 3145 Relativistic Effects in the Scalar Meson Dynamics
ZOU 1994B
PR D50 591 Remarks on $\mathit I = 0$ $\mathit J{}^{PC} = 0{}^{++}$ States: $\sigma /\epsilon $ and ${{\mathit f}_{{0}}{(975)}}$
MORGAN 1993
PR D48 1185 New Data on the ${{\mathit K}}{{\overline{\mathit K}}}$ Threshold Region and the Nature of the ${{\mathit f}_{{0}}{(S*)}}$
AGUILAR-BENITEZ 1991
ZPHY C50 405 Inclusive Particle Production in 400 ${\mathrm {GeV/}}\mathit c$ ${{\mathit p}}{{\mathit p}}$ Interactions
ARMSTRONG 1991
ZPHY C51 351 Study of the Centrally Produced ${{\mathit \pi}}{{\mathit \pi}}$ and ${{\mathit K}}{{\overline{\mathit K}}}$ Systems at 85 and 300 ${\mathrm {GeV/}}\mathit c$
BREAKSTONE 1990
ZPHY C48 569 The Reaction pomeron pomeron $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ and an Unusual Production Mechanism for the ${{\mathit f}_{{2}}{(1270)}}$
AUGUSTIN 1989
NP B320 1 Study of the ${{\mathit J / \psi}}$ Decay into Five Pions
ABACHI 1986B
PRL 57 1990 Observation of Tensor and Scalar Mesons Produced in ${{\mathit e}^{+}}{{\mathit e}^{-}}$ Annihilation at 29 GeV
ETKIN 1982B
PR D25 1786 Amplitude Analysis of the ${{\mathit K}_S^0}{{\mathit K}_S^0}$ System Produced in the Reaction ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit K}_S^0}$ ${{\mathit n}}$ at 23 ${\mathrm {GeV/}}\mathit c$
GIDAL 1981
PL 107B 153 Observation of ${{\mathit S}^{*}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ in ${{\mathit \psi}}$ Decay
ACHASOV 1980
SJNP 32 566 Nature of Scalar Resonances
AGUILAR-BENITEZ 1978
NP B140 73 Study of a ${{\mathit K}_S^0}$ ${{\mathit K}_S^0}$ Plus Threshold Enhancement Observed in the Final States ${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit K}_S^0}$ Pions at 700 to 760 ${\mathrm {MeV}}/\mathit c$
LEEPER 1977
PR D16 2054 A Study of the Reactions ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit n}}$ and ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit n}}$ at 1.98 and 2.41 ${\mathrm {GeV/}}\mathit c$
BINNIE 1973
PRL 31 1534 Direct Evidence for the ${{\mathit S}^{*}}$ Meson near the ${{\mathit K}}{{\overline{\mathit K}}}$ Threshold
GRAYER 1973
Tallahassee Coupled Channel Analysis in the ${{\mathit K}}{{\overline{\mathit K}}}$ Threshold Region
HYAMS 1973
NP B64 134 ${{\mathit \pi}}{{\mathit \pi}}$ Phase Shift Analysis from 600 to 1900 MeV
PROTOPOPESCU 1973
PR D7 1279 ${{\mathit \pi}}{{\mathit \pi}}$ Partial Wave Analysis from Reactions ${{\mathit \pi}^{+}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \Delta}^{++}}$ and ${{\mathit \pi}^{+}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \Delta}^{++}}$ at 7.1 ${\mathrm {GeV/}}\mathit c$