TA-CON-2016-026

**** Canceled ***** PANDA is a planned experiment at FAIR (Darmstadt) with a cooled antiproton beam in a range [1.5; 15] GeV/c, allowing a wide physics program in nuclear and particle physics. Gluonic excitations and the physics of hadrons with strange and charm quarks will be accessible with unprecedented accuracy, thereby allowing high precision tests of the strong interaction. Among other interesting physics processes, a systematic study of the DsJ(*) mesons is planned, with particular attention to the Ds0*(2317) and Ds1(2460), as their mass is found well below potential model predictions, despite to the others cs-bound systems in the charm-strange spectrum. This suggests that the same mechanism deflates both masses, leading to different interpretations. The width measurement is crucial to discriminate among theoretical models. The feasibility study of the ppbar ---->Ds Ds0*(2317) and the ppbar ---->Ds Ds1(2460) processes are presented, using the current status of the PandaRoot framework development, together with theoretical prediction of the cross section calculation and background prediction, based on full simulations. The minimum momentum required to run such a simulation is p>8.8 GeV/c. With a beam momentum resolution Dp/p ~ 10-4, PANDA will be able to achieve a factor 20 higher mass resolution than attained at the B-factories, which is expected to be decisive on these and second-order open questions.
The technique to evaluate the width from the excitation function of the cross section of the Dsj(*) mesons is presented, as a unique feature to disclose their nature.