pdgLive Home   >   LIGHT UNFLAVORED MESONS ($\mathit S$ = $\mathit C$ = $\mathit B$ = 0)   >   ${{\mathit \eta}{(1405)}}$   >   ${{\mathit K}}{{\overline{\mathit K}}}{{\mathit \pi}}$ MODE (unresolved)

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

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

INSPIRE   PDGID:

M027M6

VALUE (MeV) EVTS DOCUMENT ID TECN  COMMENT • • We do not use the following data for averages, fits, limits, etc. • • $1452.7$ $\pm3.3$ 191 1, 2 ABLIKIM 2013 M BES3 ${{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit \omega}}{{\mathit K}}{{\mathit K}}{{\mathit \pi}}$ $1437.6$ $\pm3.2$ $249$ $\pm35$ 1, 2 ABLIKIM 2008 E BES2 ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \omega}}{{\mathit K}_S^0}$ ${{\mathit K}^{+}}{{\mathit \pi}^{-}}$ + c.c. $1445.9$ $\pm5.7$ $62$ $\pm18$ 1, 2 ABLIKIM 2008 E BES2 ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \omega}}{{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \pi}^{0}}$ $1442$ $\pm10$ 410 1 BAI 1998 C BES ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \pi}^{0}}$ $1445$ $\pm8$ 693 1 AUGUSTIN 1990 DM2 ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit K}_S^0}$ ${{\mathit K}^{\pm}}{{\mathit \pi}^{\mp}}$ $1433$ $\pm8$ 296 1 AUGUSTIN 1990 DM2 ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \pi}^{0}}$ $1413$ $\pm8$ 500 1 DUCH 1989 ASTE ${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit K}^{\pm}}{{\mathit \pi}^{\mp}}{{\mathit K}^{0}}$ $1453$ $\pm7$ 170 1 RATH 1989 MPS 21.4 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit K}_S^0}$ ${{\mathit \pi}^{0}}{{\mathit n}}$ $1419$ $\pm1$ 8800 1 BIRMAN 1988 MPS 8 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\overline{\mathit K}}^{0}}{{\mathit \pi}^{-}}{{\mathit n}}$ $1424$ $\pm3$ 620 1 REEVES 1986 SPEC 6.6 ${{\mathit p}}$ ${{\overline{\mathit p}}}$ $\rightarrow$ ${{\mathit K}}{{\overline{\mathit K}}}{{\mathit \pi}}$ X $1421$ $\pm2$ 1 CHUNG 1985 SPEC 8 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit K}}{{\overline{\mathit K}}}{{\mathit \pi}}{{\mathit n}}$ $1440$ ${}^{+20}_{-15}$ 174 1 EDWARDS 1982 E CBAL ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \pi}^{0}}$ $1440$ ${}^{+10}_{-15}$ 1 SCHARRE 1980 MRK2 ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit K}_S^0}$ ${{\mathit K}^{\pm}}{{\mathit \pi}^{\mp}}$ $1425$ $\pm7$ 800 1, 3 BAILLON 1967 HBC 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 of ${}^{}0{}^{-+}$ 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 ${{\mathit \phi}}{{\mathit K}}{{\overline{\mathit K}}}{{\mathit \pi}}$ BAI 1998C PL B440 217 Partial Wave Analysis of ${{\mathit J / \psi}{(1S)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \pi}^{0}}$ 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

Except where otherwise noted, content of the 2023 Review of Particle Physics is licensed under a Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) license. The publication of the Review of Particle Physics is supported by US DOE, MEXT (Japan), INFN (Italy), JPS and CERN. Individual collaborators receive support for their PDG activities from their respective institutes or funding agencies. © 2023. See LBNL disclaimers.