Type

Journal Article

Authors

Michael James Peardon
Sinead Marie Ryan

Subjects

Physics

Topics
excited states mass lattice variational method spectroscopy statistical lattice qcd experimental

Excited and exotic charmonium spectroscopy from lattice QCD (2012)

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 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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Full list of authors on original publication

Michael James Peardon, Sinead Marie Ryan

Experts in our system

1
Michael James Peardon
Trinity College Dublin
Total Publications: 64
 
2
Sinead Marie Ryan
Trinity College Dublin
Total Publications: 63