Volume 336 - XIII Quark Confinement and the Hadron Spectrum (Confinement2018) - C: Heavy quarks
Precision spectroscopy of charmonium-like (exotic) XYZ states at PANDA/FAIR
F. Nerling*, K. Götzen, R. Kliemt, K. Peters  on behalf of the PANDA Collaboration
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Pre-published on: September 12, 2019
Published on: September 26, 2019
Abstract
The PANDA experiment represents the central part of the hadron physics programme at the new Facility for Antiproton and Ion Research (FAIR) under construction at GSI/Darmstadt (Germany). The multi-purpose PANDA detector in combination with an intense and high-quality antiproton beam allows for coverage of a broad range of different aspects of QCD, and it is best suited for charmonium spectroscopy. We present a comprehensive PANDA Monte Carlo simulation study for precision resonance energy scan measurements, using the example of the charmonium-like $X(3872)$ state discussed to be exotic. Apart from the proof of principle for natural decay width and line-shape measurements of very narrow resonances, the achievable sensitivities are quantified for the concrete example of the $X(3872)$. The discussed measurement is uniquely possible with a $\bar{p}p$ annihilation experiment such as PANDA at FAIR.
DOI: https://doi.org/10.22323/1.336.0120
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