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${{\mathit \eta}_{{1}}{(1855)}}$ WIDTH

INSPIRE   PDGID:

M267W

VALUE (MeV) DOCUMENT ID TECN  COMMENT $188$ $\pm18$ ${}^{+3}_{-8}$ 1 ABLIKIM 2022 AI BES3 ${{\mathit J / \psi}{(1S)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \eta}}{{\mathit \eta}^{\,'}}$ 1  From a Breit-Wigner fit involving 9 resonances and the resonating exotic ${{\mathit \eta}_{{1}}{(1855)}}$ $\rightarrow$ ${{\mathit \eta}}{{\mathit \eta}^{\,'}}$ ${\mathit P}{\mathrm -wave}$. For analysis details see ABLIKIM 2022AS.

References:

ABLIKIM 2022AI PRL 129 192002 Observation of an Isoscalar Resonance with Exotic $J^{PC}=1^{-+}$ Quantum Numbers in $J/????{?}^{?}$ Also PR D106 072012 Partial wave analysis of $J/????{?}^{?}$