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${{\mathit f}_{{2}}{(2340)}}$ WIDTH

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M108W

VALUE (MeV) EVTS DOCUMENT ID TECN  COMMENT $\bf{ 331 {}^{+27}_{-18}}$ OUR AVERAGE $332$ $\pm14$ ${}^{+26}_{-12}$ 1 ABLIKIM 2022 C BES3 ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \eta}^{\,'}}{{\mathit \eta}^{\,'}}$ $\rightarrow$ 4 ${{\mathit \gamma}}$2( ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$) $334$ ${}^{+62}_{-54}$ ${}^{+165}_{-100}$ 5.5k 2 ABLIKIM 2013 N BES3 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \eta}}{{\mathit \eta}}$ $319$ ${}^{+81}_{-69}$ 3 ETKIN 1988 MPS 22 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \phi}}{{\mathit \phi}}{{\mathit n}}$ • • We do not use the following data for averages, fits, limits, etc. • • $218$ $\pm16$ 80k 4 UMAN 2006 E835 5.2 ${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \eta}}{{\mathit \eta}}{{\mathit \pi}^{0}}$ $198$ $\pm50$ BOOTH 1986 OMEG 85 ${{\mathit \pi}^{-}}$ ${}^{}\mathrm {Be}$ $\rightarrow$ 2 ${{\mathit \phi}}{}^{}\mathrm {Be}$ $150$ ${}^{+150}_{-50}$ LINDENBAUM 1984 RVUE 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. 2  From partial wave analysis including all possible combinations of 0${}^{++}$, 2${}^{++}$, and 4${}^{++}$ resonances. 3  Includes data of ETKIN 1985 . 4  Statistical error only.

References:

ABLIKIM 2022C PR D105 072002 Partial wave analysis of $J/\psi \rightarrow \gamma \eta' \eta'$ 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/$\mathit c$ ETKIN 1988 PL B201 568 Increased Statistics and Observation of $\mathit g_{{{\mathit T}}}$, $\mathit g_{{{\mathit T}^{\,'}}}$ and $\mathit g_{{{\mathit T}^{"}}}$ $2+{}^{+}{}^{}$ Resonances in Glueball Enhanced Channel ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \phi}}{{\mathit \phi}}{{\mathit n}}$ BOOTH 1986 NP B273 677 A High Statistics Study of the ${{\mathit \phi}}{{\mathit \phi}}$ Mass Spectrum LINDENBAUM 1984 CNPP 13 285 Production of Glueballs