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${{\mathit \eta}{(1405)}}$ WIDTH

${{\mathit K}}{{\overline{\mathit K}}}{{\mathit \pi}}$ MODE (unresolved)

INSPIRE   PDGID:

M027W6

VALUE (MeV) EVTS DOCUMENT ID TECN  COMMENT • • We do not use the following data for averages, fits, limits, etc. • • $45.9$ $\pm8.2$ 191 1, 2 ABLIKIM 2013 M BES3 ${{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit \omega}}{{\mathit K}}{{\mathit K}}{{\mathit \pi}}$ $48.9$ $\pm9.0$ $249$ $\pm35$ 1, 2 ABLIKIM 2008 E BES2 ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \omega}}{{\mathit K}_S^0}$ ${{\mathit K}^{+}}{{\mathit \pi}^{-}}$ + c.c. $34.2$ $\pm18.5$ $62$ $\pm18$ 1, 2 ABLIKIM 2008 E BES2 ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \omega}}{{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \pi}^{0}}$ $93$ $\pm14$ 296 1 AUGUSTIN 1990 DM2 ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \pi}^{0}}$ $105$ $\pm10$ 693 1 AUGUSTIN 1990 DM2 ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit K}_S^0}$ ${{\mathit K}^{\pm}}{{\mathit \pi}^{\mp}}$ $62$ $\pm16$ 500 1 DUCH 1989 ASTE ${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit K}}{{\overline{\mathit K}}}{{\mathit \pi}}{{\mathit \pi}}{{\mathit \pi}}$ $100$ $\pm11$ 170 1 RATH 1989 MPS 21.4 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit K}_S^0}$ ${{\mathit \pi}^{0}}{{\mathit n}}$ $66$ $\pm2$ 8800 1 BIRMAN 1988 MPS 8 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\overline{\mathit K}}^{0}}{{\mathit \pi}^{-}}{{\mathit n}}$ $60$ $\pm10$ 620 1 REEVES 1986 SPEC 6.6 ${{\mathit p}}$ ${{\overline{\mathit p}}}$ $\rightarrow$ ${{\mathit K}}{{\mathit K}}{{\mathit \pi}}$ X $60$ $\pm10$ 1 CHUNG 1985 SPEC 8 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit K}}{{\overline{\mathit K}}}{{\mathit \pi}}{{\mathit n}}$ $55$ ${}^{+20}_{-30}$ 174 1 EDWARDS 1982 E CBAL ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \pi}^{0}}$ $50$ ${}^{+30}_{-20}$ 1 SCHARRE 1980 MRK2 ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit K}_S^0}$ ${{\mathit K}^{\pm}}{{\mathit \pi}^{\mp}}$ $80$ $\pm10$ 800 1, 3 BAILLON 1967 HBC 0.0 ${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit K}}{{\overline{\mathit K}}}{{\mathit \pi}}{{\mathit \pi}}{{\mathit \pi}}$ 1  These experiments identify only one pseudoscalar in the $1400 - 1500$ range. Data could also refer to ${{\mathit \eta}{(1475)}}$. 2  Systematic uncertainty not evaluated. 3  From best fit to ${}^{}0{}^{-+}$ partial wave , 50$\%$ ${{\mathit K}^{*}{(892)}}{{\mathit K}}$ , 50$\%$ ${{\mathit a}_{{0}}{(980)}}{{\mathit \pi}}$ .

References:

ABLIKIM 2013M PR D87 092006 Study of ${{\mathit \psi}{(3686)}}$ $\rightarrow$ ${{\mathit \omega}}{{\mathit K}}{{\mathit K}^{-}}{{\mathit \pi}}$ Decays ABLIKIM 2008E PR D77 032005 Measurements of ${{\mathit J / \psi}}$ Decays into ${{\mathit \omega}}{{\mathit K}}{{\overline{\mathit K}}}{{\mathit \pi}}$ and ${{\mathit \phi}}{{\mathit K}}{{\overline{\mathit K}}}{{\mathit \pi}}$ AUGUSTIN 1990 PR D42 10 Radiative Decay of ${{\mathit J / \psi}}$ into ${{\mathit \eta}{(1430)}}$ and Nearby States DUCH 1989 ZPHY C45 223 Observation and Analysis of ${{\mathit E}}$ Mesons in ${{\overline{\mathit p}}}{{\mathit p}}$ Annihilation at Rest in H$_{2}$ Gas RATH 1989 PR D40 693 The ${{\mathit K}_S^0}$ ${{\mathit K}_S^0}$ ${{\mathit \pi}^{0}}$ System Produced in ${{\mathit \pi}^{-}}{{\mathit p}}$ Interactions at 21.4 ${\mathrm {GeV/}}\mathit c$ BIRMAN 1988 PRL 61 1557 Partial Wave Analysis of the ${{\mathit K}^{+}}{{\overline{\mathit K}}^{0}}{{\mathit \pi}^{-}}$ System REEVES 1986 PR D34 1960 Spin Parity Analysis of ${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit E}{(1420)}}{{\mathit X}}$ CHUNG 1985 PRL 55 779 Spin and Parity Analysis of ${{\mathit K}}{{\overline{\mathit K}}}{{\mathit \pi}}$ System in the ${{\mathit D}}$ and $\mathit E/\iota $ Regions EDWARDS 1982E PRL 49 259 Identification of a Pseudoscalar State at 1440 MeV in ${{\mathit J / \psi}}$ Radiative Decays Also PRL 50 219 Erratum: EDWARDS 1982E Identification of a Pseudoscalar State at 1440 MeV in ${{\mathit J / \psi}}$ Radiative Decays SCHARRE 1980 PL 97B 329 Observation of the Radiative Transition ${{\mathit \psi}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit E}{(1420)}}$ BAILLON 1967 NC 50A 393 Further Study of the ${{\mathit e}}$-Meson in Antiproton Proton Annihilation at Rest

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