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${{\mathit f}_{{0}}{(2470)}}$ MASS

INSPIRE   PDGID:

M266M

VALUE (MeV) DOCUMENT ID TECN  COMMENT $2470$ $\pm4$ ${}^{+4}_{-6}$ 1 ABLIKIM 2022 C BES3 ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \eta}^{\,'}}{{\mathit \eta}^{\,'}}$ $\rightarrow$ 4 ${{\mathit \gamma}}$2( ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$) 1  From a partial wave analysis of the systems ( ${{\mathit \gamma}}{{\mathit X}}$ ), with ${{\mathit X}}$ $\rightarrow$ ${{\mathit \eta}^{\,'}}{{\mathit \eta}^{\,'}}$ , and ( ${{\mathit \eta}^{\,'}}{{\mathit X}}$ ), with ${{\mathit X}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \eta}^{\,'}}$ in the decay ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \eta}^{\,'}}{{\mathit \eta}^{\,'}}$ . The intermediate resonance ${{\mathit X}}$ is parametrized by a constant-width, relativistic Breit-Wigner.

References:

ABLIKIM 2022C PR D105 072002 Partial wave analysis of $J/\psi \rightarrow \gamma \eta' \eta'$