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Excited and exotic charmonium spectroscopy from lattice QCD

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Abstract

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 ≈ 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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Authors and Affiliations

  1. School of Mathematics, Trinity College, Dublin 2, Ireland

    Liuming Liu, Graham Moir, Michael Peardon, Sinéad M. Ryan, Christopher E. Thomas & Pol Vilaseca

  2. Jefferson Laboratory, 12000 Jefferson Avenue, Newport News, VA, 23606, U.S.A.

    Jozef J. Dudek, Robert G. Edwards, Bálint Joó & David G. Richards

  3. Department of Physics, Old Dominion University, Norfolk, VA, 23529, U.S.A.

    Jozef J. Dudek

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  1. Liuming Liu
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  2. Graham Moir
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  3. Michael Peardon
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  7. Jozef J. Dudek
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For the Hadron Spectrum collaboration

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Correspondence to Christopher E. Thomas.

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ArXiv ePrint: 1204.5425

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For the Hadron Spectrum collaboration., Liu, L., Moir, G. et al. Excited and exotic charmonium spectroscopy from lattice QCD. J. High Energ. Phys. 2012, 126 (2012). https://doi.org/10.1007/JHEP07(2012)126

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  • DOI: https://doi.org/10.1007/JHEP07(2012)126

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