${{\mathit \chi}_{{{c2}}}{(1P)}}$ WIDTH

INSPIRE   PDGID:
M057W
VALUE (MeV) EVTS DOCUMENT ID TECN  COMMENT
$\bf{ 1.98 \pm0.09}$ OUR FIT  Error includes scale factor of 1.1.
$\bf{ 2.00 \pm0.11}$ OUR AVERAGE
$2.10$ $\pm0.20$ $\pm0.02$ 4.0k
AAIJ
2017BI
LHCB ${{\mathit \chi}_{{{c2}}}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$
$1.915$ $\pm0.188$ $\pm0.013$
ANDREOTTI
2005A
E835 ${{\mathit p}}$ ${{\overline{\mathit p}}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit e}^{-}}{{\mathit \gamma}}$
$1.96$ $\pm0.17$ $\pm0.07$ 585 1
ARMSTRONG
1992
E760 ${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit e}^{-}}{{\mathit \gamma}}$
$2.6$ ${}^{+1.4}_{-1.0}$ 50
BAGLIN
1986B
SPEC ${{\overline{\mathit p}}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit e}^{-}}$ X
$2.8$ ${}^{+2.1}_{-2.0}$ 2
GAISER
1986
CBAL ${{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit \gamma}}$ X
1  Recalculated by ANDREOTTI 2005A.
2  Errors correspond to 90$\%$ confidence level; authors give only width range.
References
see fit info