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29 March 2024
 
  » arxiv » 1812.6908

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Charmonium resonances from 2+1 flavor CLS lattices
Sara Collins ; Daniel Mohler ; M. Padmanath ; Stefano Piemonte ; Sasa Prelovsek ; Simon Weishaeupl ;
Date 17 Dec 2018
AbstractMany exotic charmonium resonances have been identified recently in experiment, however their nature and properties are mostly unknown. Algorithmic and theoretical progress in lattice calculations has enabled reliable numerical investigation of the spectrum below the strong decay threshold, while the study of charmonium resonances remains an open challenge. The main difficulty to overcome is the presence of many open decay channels which are coupled together, resulting in a complex finite volume quantization condition. We report on our recent progress towards the determination of single-channel and coupled-channel scattering matrices in the scalar and vector channels on CLS ensembles. We also present an update concerning the study of the charmonium spectrum in moving frames.
Source arXiv, 1812.6908
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