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

INSPIRE   JSON  (beta) 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