Excited and exotic charmonium spectroscopy from lattice QCD

By Liuming Liu, Graham Moir, M. Peardon, S. Ryan, Christopher E. Thomas, Pol Vilaseca, J. Dudek, R. Edwards, B. Joó, D. Richards and 1 more. Journal of High Energy Physics, 2012

207 citations recorded by the source corpus.

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.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/b3f42e487890f9d724ad7dbe826e379cc3a23795

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In Nuclear and High Energy Physics

1. R. Young
2. C. Hanhart
3. J. Dudek
4. R. Mitchell
5. Ulf-G. Meissner
6. Qiang Zhao
7. Feng-Kun Guo
8. Bing-song Zou

Citations in the corpus

• Scattering processes and resonances from lattice QCD (2017, background): “Such matrix elements would provide a more rigorous framework with which to build on existing analyses where gluonic content has been inferred from operator overlaps (Dudek, 2011; Dudek and Edwards, 2012; Dudek et al., 2013a, 2011a, 2009, 2010; Edwards et al., 2011; Liu et al., 2012).”
• Heavy-quark QCD exotica (2016, methodology): “[8] D. Cronin-Hennessy et al. (CLEO Collaboration), Phys.”
• Hadronic molecules (2017, background): “There has been a remarkable progress in the last years in this field, see e.g. (Baron et al., 2010; Dürr et al., 2008; Edwards et al., 2011; Liu, 2017; Liu et al., 2012).”
• The XYZ states: Experimental and theoretical status and perspectives (2019, methodology): “[129] using anisotropic lattices with 2+1 flavors at a pion mass of 396 MeV, and in Ref.”