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arxiv 1204.5425 v2 pith:VD6CWF4C submitted 2012-04-24 hep-ph hep-lat

Excited and exotic charmonium spectroscopy from lattice QCD

Liuming Liu , Graham Moir , Michael Peardon , Sin\'ead M. Ryan , Christopher E. Thomas , Pol Vilaseca , Jozef J. Dudek , Robert G. Edwards
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B\'alint Jo\'o David G. Richards
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classification hep-ph hep-lat
keywords excitedstatesexoticlatticemesonscharmoniumhighidentify
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We present a spectrum of highly excited charmonium mesons up to around 4.5 GeV calculated using dynamical lattice QCD. Employing novel computational techniques and the variational method with a large basis of carefully constructed operators, we extract and reliably identify the continuum spin of an extensive set of excited states, states with exotic quantum numbers (0+-, 1-+, 2+-) and states with high spin. Calculations are performed on two lattice volumes with pion mass approximately 400 MeV and the mass determinations have high statistical precision even for excited states. We discuss the results in light of experimental observations, identify the lightest 'supermultiplet' of hybrid mesons and comment on the phenomenological implications of the spectrum of exotic mesons.

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Cited by 3 Pith papers

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