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Title: Toward the excited isoscalar meson spectrum from lattice QCD

Abstract

We report on the extraction of an excited spectrum of isoscalar mesons using lattice QCD. Calculations on several lattice volumes are performed with a range of light quark masses corresponding to pion masses down to about ~400 MeV. The distillation method enables us to evaluate the required disconnected contributions with high statistical precision for a large number of meson interpolating fields. We find relatively little mixing between light and strange in most JPC channels; one notable exception is the pseudoscalar sector where the approximate SU(3)F octet, singlet structure of the η, η' is reproduced. We extract exotic JPC states, identified as hybrid mesons in which an excited gluonic field is coupled to a color-octet qqbar pair, along with non-exotic hybrid mesons embedded in a qq¯-like spectrum.

Authors:
 [1];  [2];  [2];  [3]
  1. Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States); Old Dominion Univ., Norfolk, VA (United States)
  2. Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
  3. Trinity College, Dublin (Ireland)
Publication Date:
Research Org.:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). 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:
1105954
Report Number(s):
JLAB-THY-13-1786; DOE/OR/23177-2729; arXiv:1309.2608
Journal ID: ISSN 1550-7998; PRVDAQ; TRN: US1600824
Grant/Contract Number:  
AC05-06OR23177
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review. D, Particles, Fields, Gravitation and Cosmology
Additional Journal Information:
Journal Volume: 88; Journal Issue: 9; Journal ID: ISSN 1550-7998
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Dudek, Jozef J., Edwards, Robert G., Guo, Peng, and Thomas, Christopher E. Toward the excited isoscalar meson spectrum from lattice QCD. United States: N. p., 2013. Web. doi:10.1103/PhysRevD.88.094505.
Dudek, Jozef J., Edwards, Robert G., Guo, Peng, & Thomas, Christopher E. Toward the excited isoscalar meson spectrum from lattice QCD. United States. https://doi.org/10.1103/PhysRevD.88.094505
Dudek, Jozef J., Edwards, Robert G., Guo, Peng, and Thomas, Christopher E. Mon . "Toward the excited isoscalar meson spectrum from lattice QCD". United States. https://doi.org/10.1103/PhysRevD.88.094505. https://www.osti.gov/servlets/purl/1105954.
@article{osti_1105954,
title = {Toward the excited isoscalar meson spectrum from lattice QCD},
author = {Dudek, Jozef J. and Edwards, Robert G. and Guo, Peng and Thomas, Christopher E.},
abstractNote = {We report on the extraction of an excited spectrum of isoscalar mesons using lattice QCD. Calculations on several lattice volumes are performed with a range of light quark masses corresponding to pion masses down to about ~400 MeV. The distillation method enables us to evaluate the required disconnected contributions with high statistical precision for a large number of meson interpolating fields. We find relatively little mixing between light and strange in most JPC channels; one notable exception is the pseudoscalar sector where the approximate SU(3)F octet, singlet structure of the η, η' is reproduced. We extract exotic JPC states, identified as hybrid mesons in which an excited gluonic field is coupled to a color-octet qqbar pair, along with non-exotic hybrid mesons embedded in a qq¯-like spectrum.},
doi = {10.1103/PhysRevD.88.094505},
journal = {Physical Review. D, Particles, Fields, Gravitation and Cosmology},
number = 9,
volume = 88,
place = {United States},
year = {Mon Nov 18 00:00:00 EST 2013},
month = {Mon Nov 18 00:00:00 EST 2013}
}

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Cited by: 113 works
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