${{\boldsymbol \psi}_{{2}}{(3823)}}$ MASS INSPIRE search

VALUE (MeV) EVTS DOCUMENT ID TECN  COMMENT
$\bf{ 3822.2 \pm1.2}$ OUR AVERAGE
$3821.7$ $\pm1.3$ $\pm0.7$ $19$ $\pm5$ 1
ABLIKIM
2015S
BES3 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \chi}_{{c1}}}{{\mathit \gamma}}$
$3823.1$ $\pm1.8$ $\pm0.7$ $33$ $\pm10$ 2
BHARDWAJ
2013
BELL ${{\mathit B}}$ $\rightarrow$ ${{\mathit \chi}_{{c1}}}{{\mathit \gamma}}{{\mathit K}}$
1  From a simultaneous unbinned maximum likelihood fit of ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \chi}_{{c1}}}{{\mathit \gamma}}$ data (the ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ recoil mass) taken at $\sqrt {s }$ values of 4.23, 4.26, 4.36, 4.42, and 4.60 GeV to simulated events including both ${{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit \chi}_{{c1}}}{{\mathit \gamma}}$ and ${{\mathit \psi}_{{2}}{(3823)}}$ $\rightarrow$ ${{\mathit \chi}_{{c1}}}{{\mathit \gamma}}$ together, with floating mass scale offset for ${{\mathit \psi}{(2S)}}$, floating ${{\mathit \psi}_{{2}}{(3823)}}$ mass, and zero ${{\mathit \psi}_{{2}}{(3823)}}$ width, resulting in a significance of 5.9$\sigma $ when including systematic uncertainties.
2  From a simultaneous fit to ${{\mathit B}^{\pm}}$ $\rightarrow$ ( ${{\mathit \chi}_{{c1}}}{{\mathit \gamma}}$) ${{\mathit K}^{\pm}}$ and ${{\mathit B}^{0}}$ $\rightarrow$ ( ${{\mathit \chi}_{{c1}}}{{\mathit \gamma}}$) ${{\mathit K}_S^0}$ with significance 4.0$\sigma $ including systematics. Corrected for the measured ${{\mathit \psi}{(2S)}}$ mass using ${{\mathit B}}$ $\rightarrow$ ${{\mathit \psi}{(2S)}}{{\mathit K}}$ $\rightarrow$ ( ${{\mathit \gamma}}{{\mathit \chi}_{{c1}}}$) ${{\mathit K}}$ decays.
  References:
ABLIKIM 2015S
PRL 115 011803 Observation of the ${{\mathit \psi}}(1{}^{3}D_{2}$) State in ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \gamma}}{{\mathit \chi}_{{c1}}}$ at BESIII
BHARDWAJ 2013
PRL 111 032001 Evidence of a New Narrow Resonance Decaying to ${{\mathit \chi}_{{c1}}}{{\mathit \gamma}}$ in ${{\mathit B}}$ $\rightarrow$ ${{\mathit \chi}_{{c1}}}{{\mathit \gamma}}{{\mathit K}}$