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RESEARCH PRODUCT

Charmonium resonances from 2+1 flavor CLS lattices

Daniel MohlerStefano PiemonteSasa PrelovsekSara CollinsM. PadmanathSimon Weishäupl

subject

PhysicsParticle physicsHigh Energy Physics - LatticeCLs upper limitsHigh Energy Physics - Lattice (hep-lat)FOS: Physical sciencesFlavor

description

Many 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.

yearjournalcountryeditionlanguage
2019-09-12Proceedings of XIII Quark Confinement and the Hadron Spectrum — PoS(Confinement2018)
https://doi.org/10.22323/1.336.0117