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Title: Excited and exotic charmonium spectroscopy from lattice QCD

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.

Authors:
 [1];  [1];  [1];  [1];  [1];  [1];  [2];  [3];  [3];  [3]
  1. Trinity College, Dublin (Ireland)
  2. Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States); Old Dominion Univ., Norfolk, VA (United States)
  3. Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
Publication Date:
Research Org.:
Oak Ridge National Laboratory, Oak Ridge Leadership Computing Facility (OLCF); Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
Contributing Org.:
Hadron Spectrum collaboration
OSTI Identifier:
1048927
Report Number(s):
JLAB-THY-12-1510; DOE/OR/-23177-2077; TCDMATH-12-04
Journal ID: ISSN 1029-8479; TRN: US1204338
Grant/Contract Number:  
AC05-06OR23177, SC0006765
Resource Type:
Accepted Manuscript
Journal Name:
Journal of High Energy Physics (Online)
Additional Journal Information:
Journal Name: Journal of High Energy Physics (Online); Journal Volume: 2012; Journal Issue: 7; Journal ID: ISSN 1029-8479
Publisher:
Springer Berlin
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ACCURACY; CHARMONIUM; EXCITED STATES; MESONS; PIONS; QUANTUM CHROMODYNAMICS; QUANTUM NUMBERS; SPECTROSCOPY; SPIN; VARIATIONAL METHODS

Citation Formats

Liu, Liuming, Moir, Graham, Peardon, Michael, Ryan, Sinéad M., Thomas, Christopher E., Vilaseca, Pol, Dudek, Jozef J., Edwards, Robert G., Joó, Bálint, and Richards, David G. Excited and exotic charmonium spectroscopy from lattice QCD. United States: N. p., 2012. Web. doi:10.1007/JHEP07(2012)126.
Liu, Liuming, Moir, Graham, Peardon, Michael, Ryan, Sinéad M., Thomas, Christopher E., Vilaseca, Pol, Dudek, Jozef J., Edwards, Robert G., Joó, Bálint, & Richards, David G. Excited and exotic charmonium spectroscopy from lattice QCD. United States. doi:10.1007/JHEP07(2012)126.
Liu, Liuming, Moir, Graham, Peardon, Michael, Ryan, Sinéad M., Thomas, Christopher E., Vilaseca, Pol, Dudek, Jozef J., Edwards, Robert G., Joó, Bálint, and Richards, David G. Fri . "Excited and exotic charmonium spectroscopy from lattice QCD". United States. doi:10.1007/JHEP07(2012)126. https://www.osti.gov/servlets/purl/1048927.
@article{osti_1048927,
title = {Excited and exotic charmonium spectroscopy from lattice QCD},
author = {Liu, Liuming and Moir, Graham and Peardon, Michael and Ryan, Sinéad M. and Thomas, Christopher E. and Vilaseca, Pol and Dudek, Jozef J. and Edwards, Robert G. and Joó, Bálint and Richards, David G.},
abstractNote = {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.},
doi = {10.1007/JHEP07(2012)126},
journal = {Journal of High Energy Physics (Online)},
number = 7,
volume = 2012,
place = {United States},
year = {2012},
month = {7}
}

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