${{\mathit \eta}{(2370)}}$ WIDTH

INSPIRE   JSON  (beta) PDGID:
M247W
VALUE (MeV) DOCUMENT ID TECN  COMMENT
$\bf{ 148 {}^{+80}_{-28}}$ OUR AVERAGE  Error includes scale factor of 1.7.
$188$ ${}^{+18}_{-17}$ ${}^{+124}_{-33}$ 1
ABLIKIM
2024
BES3 ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit K}_S^0}$ ${{\mathit K}_S^0}$ ${{\mathit \eta}^{\,'}}$
$83$ $\pm17$ ${}^{+44}_{-6}$
ABLIKIM
2011C
 BES3 ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \eta}^{\,'}}$
• • We do not use the following data for averages, fits, limits, etc. • •
$117$ $\pm10$ $\pm8$ 2
ABLIKIM
2020Q
 BES3 ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit K}}{{\overline{\mathit K}}}{{\mathit \eta}^{\,'}}$
1  Decaying to ${{\mathit f}_{{{0}}}{(980)}}{{\mathit \eta}^{\,'}}$, fitted together with ${{\mathit X}{(1835)}}$, a 600 MeV broad structure around 2.8 GeV, and the tail of the ${{\mathit \eta}_{{{c}}}{(1S)}}$. Supersedes ABLIKIM 2020Q.
2  The state observed by ABLIKIM 2011C at 2120 MeV is not observed with 90$\%$ CL upper limit of $1.49 \times 10^{-5}$ for ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit X}{(2120)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \eta}^{\,'}}$ and $6.38 \times 10^{-6}$ for ${{\mathit K}_S^0}$ ${{\mathit K}_S^0}$ ${{\mathit \eta}^{\,'}}$.
References