Precise Measurement of Spin-Averaged ${{\mathit \chi}_{{{cJ}}}{(1P)}}$ Mass using Photon Conversions in ${{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \chi}_{{{cJ}}}}$
ANDREOTTI
2005A
NP B717 34
Measurement of the Resonance Parameters of the ${{\mathit \chi}_{{{1}}}}(1{}^{3}P_{1}$) and ${{\mathit \chi}_{{{2}}}}(1{}^{3}P_{2}$) States of Charmonium Formed in Antiproton-Proton Annihilations
ARMSTRONG
1992
NP B373 35
Study of the ${{\mathit \chi}_{{{1}}}}$ and ${{\mathit \chi}_{{{2}}}}$ Charmonium States Formed in ${{\overline{\mathit p}}}{{\mathit p}}$ Annihilations
Also
PRL 68 1468
Precision Measurements of Charmonium States Formed in ${{\overline{\mathit p}}}$ ${{\mathit p}}$ Annihilation
BAGLIN
1986B
PL B172 455
Formation of the ${{\mathit \chi}_{{{1}}}}$ and ${{\mathit \chi}_{{{2}}}}$ Charmonium Resonances in Antiproton Proton Annihilation and Measurement of their Masses and Total Width
GAISER
1986
PR D34 711
Charmonium Spectroscopy from Inclusive ${{\mathit \psi}^{\,'}}$ and ${{\mathit J / \psi}}$ Radiative Decays