PoS - Proceedings of Science
Volume 385 - 10th International Workshop on Charm Physics (CHARM2020) - Plenary programme
Charm (-onium) physics at PANDA
F. Nerling
Full text: pdf
Pre-published on: September 26, 2021
Published on:
Abstract
The new Facility for Antiproton and Ion Research (FAIR) is under construction at GSI in Darmstadt (Germany). The PANDA experiment represents the central part of the hadron physics programme, addressing a wide range of topics in hadron structure and spectroscopy, most notably in the charm sector. The field of hadron spectroscopy has gained new momentum by the discovery of various new hadronic resonances especially in the charmonium sector over the past two decades. The nature of many of the so-called charmonium-like exotic XYZ states are, however, not yet understood. Precise measurements of hadron masses and widths are mandatory to sort out different theoretical models and clarify the nature of these new states. One example is the $X(3872)$ --- although being the first of the new charmonium-like states discovered since 2003, the nature of this state is still not understood. Via $p\bar{p}$ annihilation, such XYZ states can be produced at PANDA in direct formation, allowing for a precise resonance energy scan. Using the example of the $X(3872)$, we quantified the expected sensitivity of energy scans of narrow resonances and how well we can distinguish between models that turn out to be indistinguishable from the LHCb data. Also, PANDA will be feasible to complete the XYZ multiplets by strange partner and high-spin states. Moreover, charmed hybrids as well as open charm $D_s$ states will be searched for and investigated at PANDA.
DOI: https://doi.org/10.22323/1.385.0004
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