Charmonium spectroscopy from Fermilab E835 Available to Purchase

Fermilab E835 is dedicated to the study of charmonium spectroscopy via resonant formation in $p̄p$ annihilations. This paper presents preliminary results on charmonium spectroscopy from E835 data taken in the 1996–7 Fixed Target running period. Specifically, results for the resonance parameters of $ηc(11S0),$ the γγ partial width of $χ2(13P2)$ and a search for $ηc′(21S0)$ are presented, as is the first evidence for $χ0(13P0)$ formation in $p̄p$ annihilation.