# ${{\boldsymbol \eta}{(1475)}}$ WIDTH INSPIRE search

VALUE (MeV) EVTS DOCUMENT ID TECN  COMMENT
$\bf{ 90 \pm9}$ OUR AVERAGE  Error includes scale factor of 1.6.
$67$ $\pm18$ $\pm7$ 74
 2007
L3 $183 - 209$ ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit e}^{-}}{{\mathit K}_S^0}$ ${{\mathit K}^{\pm}}{{\mathit \pi}^{\mp}}$
$120$ $\pm15$ 3651
 2002
OBLX 0 $\bar p p \to K^+ K^- \pi^+\pi^-\pi^0$
$98$ $\pm18$ $\pm3$ 20k
 2001 B
B852 18 GeV ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \pi}^{0}}{{\mathit n}}$
$100$ $\pm20$
 1999
OBLX 0 ${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit K}^{\pm}}{{\mathit K}_S^0}$ ${{\mathit \pi}^{\mp}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$
$105$ $\pm15$
 1997
OBLX 0.0 ${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit K}^{\pm}}$( ${{\mathit K}^{0}}$) ${{\mathit \pi}^{\mp}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$
$105$ $\pm15$
 1995
OBLX 0 ${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit K}}{{\overline{\mathit K}}}{{\mathit \pi}}{{\mathit \pi}}{{\mathit \pi}}$
$54$ ${}^{+37}_{-21}$ ${}^{+13}_{-24}$
 1990 C
MRK3 ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit K}_S^0}$ ${{\mathit K}^{\pm}}{{\mathit \pi}^{\mp}}$
$51$ $\pm13$
 1989
MPS 21.4 ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit n}}{{\mathit K}_S^0}$ ${{\mathit K}_S^0}$ ${{\mathit \pi}^{0}}$
• • • We do not use the following data for averages, fits, limits, etc. • • •
$118$ $\pm22$ $\pm17$ 1
 2018 I
BES3 ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}{{\mathit \phi}{(1020)}}$
$45$ ${}^{+14}_{-13}$ ${}^{+21}_{-28}$ 2
 2015 T
BES3 ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit K}_S^0}$ ${{\mathit K}_S^0}$ ${{\mathit \eta}}$
$63$ $\pm18$
 1992
DM2 ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit K}}{{\overline{\mathit K}}}{{\mathit \pi}}$
1  From a fit to ${{\mathit \gamma}}{{\mathit \phi}}$ invariant mass. Angular analysis consistent with $\mathit J{}^{PC} = 0{}^{-+}$. Other $\mathit J{}^{PC}$ not excluded.
2  Could also be the ${{\mathit \eta}{(1405)}}$.

${{\mathit \eta}{(1475)}}$ width (MeV)
References:
 ABLIKIM 2018I
PR D97 051101 Study of $\eta(1475)$ and $X(1835)$ in radiative $J/\psi$ decays to $\gamma \phi$
 ABLIKIM 2015T
PRL 115 091803 Observation and Spin-Parity Determination of the ${{\mathit X}{(1835)}}$ in ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit K}_S^0}$ ${{\mathit K}_S^0}$ ${{\mathit \eta}}$
 ACHARD 2007
JHEP 0703 018 Study of Resonance Formation in the Mass Region $1400 - 1500$ MeV through the Reaction ${{\mathit \gamma}}$ ${{\mathit \gamma}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit K}^{\pm}}{{\mathit \pi}^{\mp}}$
 NICHITIU 2002
PL B545 261 Study of the ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}}$ Final State in Antiproton Annihilation at Rest if Gaseous Hydrogen at NTP with the OBELIX Spectrometer
PL B516 264 Observation of Pseudoscalar and Axial Vector Resonances in ${{\mathit \pi}^{-}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \pi}^{0}}{{\mathit n}}$ at 18 GeV
PL B400 226 A Search for Axial Vectors in ${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit K}^{\pm}}{{\mathit K}^{0}}$ $_{miss}$ ${{\mathit \pi}^{\mp}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ Annihilations at Rest in Gaseous Hydrogen at NTP
PL B361 187 $\mathit E/\iota$ Decays to ${{\mathit K}}{{\overline{\mathit K}}}{{\mathit \pi}}$ in ${{\overline{\mathit p}}}{{\mathit p}}$ Annihilation at Rest
PR D46 1951 Partial Wave Analysis of DM2 Data in the ${{\mathit \eta}{(1430)}}$ Energy Range
PRL 65 2507 Partial Wave Analysis of ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit K}_S^0}$ ${{\mathit K}^{\pm}}{{\mathit \pi}^{\pm}}$
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 ${\mathrm {GeV/}}\mathit c$