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Abstract
The P̄ANDA experiment at FAIR (Facility for Antiproton and Ion Research) in Darmstadt (Germany) is designed for p̄p annihilation studies and it will investigate fundamental questions of hadron and nuclear physics in interactions of antiprotons with nucleons and nuclei. 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 interactions. In particular, the Ds0*(2317)+ and Ds1(2460)+ are still of high interest 11 years after their discovery, because they can not be simply understood in term of potential models. The available statistics and resolution of the past experiments did not allow to clarify their nature. Recently LHCb at CERN has made progresses in this respect, but still not at the level of precision required in order to clarify the puzzle of the cs-spectrum. P̄ANDA 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 Ds mesons will be presented, and ongoing simulations performed with PandaRoot will be shown.
Highlights
The modern theory of strong interactions is the Quantum Chromo Dynamics (QCD), which is well tested at high energy scale, but at low energy open questions remain, since only in the high energy regime the coupling constant αs is small and standard perturbative methods can be applied
We make use of same model as for the analysis described in Ref. [5], a Dalitz model based on real data, to simulate a realistic case and estimate the run-time needed in P ANDA for this analysis
Several open issues are in the sector of Charm and Charmonium physics, for example
Summary
The modern theory of strong interactions is the Quantum Chromo Dynamics (QCD), which is well tested at high energy scale, but at low energy open questions remain, since only in the high energy regime the coupling constant αs is small and standard perturbative methods can be applied. The sector of Charm and Charmonium physics is richer than expected respect to the quark model, as new resonant states with quite unusual properties have been observed. Several theoretical interpretations have been proposed for the new resonant states like hadro-charmonia, hybrids, tetraquarks and hadronic molecules. EPJ Web of Conferences cooling, the antiproton beam will have excellent momentum resolution. This allows to challenge an ambitious physics program in nuclear and particle physics, detailed explained in Ref. Charm and Charmonium specroscopy are highlights of this program. This report focuses on experimental and theoretical aspects in the context of the exotic states D∗s0(2317)+ and Ds1(2460)+, and what the original contribution of the future P ANDA experiment will be in this respect. The status of the current Monte Carlo (MC) simulations is shown in this report
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