IN-PRP-2015-009

We propose to study the $\psit$ charmonium state at \panda. An estimation of
the production cross section $\PP\to\psit$ has been performed, which shows it's
in $331\num$~nb level. Monte Carlo simulation study shows a precise mass
and width measurement of $\psit$ is possible at \panda. Within $19\num$ days
running time, we are able to achieve $M[\psit]=3822.2\pm0.02$~MeV/$c^2$ and
$\Gamma^{tot}[\psit]=427\pm38$~keV.
These measurements are more competitive than BESIII, Belle
and LHCb. It provides us very good physics opportunity in the early
running stage of the \panda experiment.