Excited and exotic charmonium spectroscopy from lattice QCD
File Type:
PDFItem Type:
Journal ArticleDate:
2012Access:
openAccessCitation:
Liuming Liu, Graham Moir, Michael Peardon, Sinead M. Ryan, Christopher E. Thomas, Pol Vilaseca, Jozef J. Dudek, Robert G. Edwards, Balint Joo, David G. Richards, Excited and exotic charmonium spectroscopy from lattice QCD, Journal of High Energy Physics, 1207, 2012, 126-Download Item:
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.
Sponsor
Grant Number
Science Foundation Ireland
RFP-PHY-3218
Science Foundation Ireland
RFP-PHY-3201
Marie Curie
PIIF-GA-2010-273320
Marie Curie
238353 (ITN STRONGnet)
Author's Homepage:
http://people.tcd.ie/ryansinhttp://people.tcd.ie/peardonm
Author: RYAN, SINEAD MARIE; PEARDON, MICHAEL JAMES
Type of material:
Journal ArticleSeries/Report no:
Journal of High Energy Physics;1207;
Availability:
Full text availableKeywords:
latticeMetadata
Show full item recordLicences: