${{\mathit f}_{{0}}{(2100)}}$ MASS

INSPIRE   PDGID:
M168M
VALUE (MeV) EVTS DOCUMENT ID TECN  COMMENT
$\bf{ 2095 {}^{+17}_{-19}}$ OUR AVERAGE
$2116$ $\pm27$ $\pm17$
LEES
2021A
 BABR ${{\mathit \gamma}}$ ${{\mathit \gamma}}$ $\rightarrow$ ${{\mathit \eta}_{{c}}{(1S)}}$ $\rightarrow$ ${{\mathit \eta}^{\,'}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$
$2081$ $\pm13$ ${}^{+24}_{-36}$ 5.5k 1
ABLIKIM
2013N
 BES3 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \eta}}{{\mathit \eta}}$
$2090$ $\pm30$
BAI
2000A
 BES ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \gamma}}$( ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$)
• • We do not use the following data for averages, fits, limits, etc. • •
$2075$ $\pm20$
SARANTSEV
2021
RVUE ${{\mathit J / \psi}{(1S)}}$ $\rightarrow$ ${{\mathit \gamma}}$ ( ${{\mathit \pi}}{{\mathit \pi}}$ , ${{\mathit K}}{{\overline{\mathit K}}}$ , ${{\mathit \eta}}{{\mathit \eta}}$ , ${{\mathit \omega}}{{\mathit \phi}}$ )
$2090$ $\pm10$ $\pm6$ 529 2, 3
DOBBS
2015
${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$
$2099$ $\pm17$ $\pm8$ 283 2, 3
DOBBS
2015
${{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$
$2105$ $\pm8$ 80k 4
UMAN
2006
E835 5.2 ${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \eta}}{{\mathit \eta}}{{\mathit \pi}^{0}}$
$2102$ $\pm13$ 5
ANISOVICH
2000J
 SPEC 2.0 ${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \eta}}{{\mathit \pi}^{0}}{{\mathit \pi}^{0}}$ , ${{\mathit \pi}^{0}}{{\mathit \pi}^{0}}$ , ${{\mathit \eta}}{{\mathit \eta}}$ , ${{\mathit \eta}}{{\mathit \eta}^{\,'}}$ , ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$
$2105$ $\pm10$
ANISOVICH
1999K
 SPEC $0.6 - 1.94$ ${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \eta}}{{\mathit \eta}}$ , ${{\mathit \eta}}{{\mathit \eta}^{\,'}}$
$\sim$$2104$
BUGG
1995
${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$
$\sim$$2122$
HASAN
1994
RVUE ${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}}{{\mathit \pi}}$
1  From partial wave analysis including all possible combinations of 0${}^{++}$, 2${}^{++}$, and 4${}^{++}$ resonances.
2  Using CLEO-c data but not authored by the CLEO Collaboration.
3  From a fit to a Breit-Wigner line shape with fixed $\Gamma $ = 209 MeV.
4  Statistical error only.
5  Includes the data of ANISOVICH 2000B indicating to exotic decay pattern.
References:
LEES 2021A
PR D104 072002 Light meson spectroscopy from Dalitz plot analyses of $\eta_c$ decays to $\eta' K^+ K^-$, $\eta' \pi^+ \pi^-$, and $\eta \pi^+ \pi^-$ produced in two-photon interactions
SARANTSEV 2021
PL B816 136227 Scalar isoscalar mesons and the scalar glueball from radiative $J/\psi$ decays
DOBBS 2015
PR D91 052006 Comprehensive Study of the Radiative Decays of ${{\mathit J / \psi}}$ and ${{\mathit \psi}{(2S)}}$ to Pseudoscalar Meson Pairs, and Search for Glueballs
ABLIKIM 2013N
PR D87 092009 Partial Wave Analysis of ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \eta}}{{\mathit \eta}}$
UMAN 2006
PR D73 052009 Light Quark Resonances in ${{\overline{\mathit p}}}{{\mathit p}}$ Annihilations at 5.2 GeV/$\mathit c$
ANISOVICH 2000J
PL B491 47 I = 0 C = +1 Mesons from 1920 to 2410 MeV
BAI 2000A
PL B472 207 Partial Wave Analysis of ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \gamma}}$( ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$)
ANISOVICH 1999K
PL B468 309 ${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \eta}}{{\mathit \eta}}$ and ${{\mathit \eta}}{{\mathit \eta}^{\,'}}$ from 600 to 1940 ${\mathrm {MeV}}/\mathit c$
BUGG 1995
PL B353 378 Further Amplitude Analysis of ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \gamma}}$( ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$)
HASAN 1994
PL B334 215 Amplitudes for ${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}}{{\mathit \pi}}$ from 0.36 to 2.5 ${\mathrm {GeV/}}\mathit c$