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Isoscalar meson spectroscopy from lattice QCD · Around

2011

Isoscalar meson spectroscopy from lattice QCD

Dudek, Jozef J., Edwards, Robert G., Joo, Balint et al.

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We extract to high statistical precision an excited spectrum of single-particle isoscalar mesons using lattice QCD, including states of high spin and, for the first time, light exotic JPC isoscalars.

The use of a novel quark field construction has enabled us to overcome the long-standing challenge of efficiently including quark-annihilation contributions.
Hidden-flavor mixing angles are extracted and while most states are found to be close to ideally flavor mixed, there are examples of large mixing in the pseudoscalar and axial sectors in line with experiment.
The exotic JPC isoscalar states appear at a mass scale comparable to the exotic isovector states.

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Then

C. M. Richards, A. C. Irving, E. B. Gregory, and C. McNeile (UKQCD), Phys. Rev. D82
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J. Bulava et al., Phys. Rev. D82
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R. Babich, M. A. Clark, and B. Joo (2010), eprint 1011.0024
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V. Mathieu and V. Vento, Phys. Rev. D81
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J. Foley et al. (2010), eprint 1011.0481
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J. J. Dudek et al., Phys. Rev. D82

Cited in the paper.

J. J. Dudek et al. (2010b), eprint 1011.6352

Cited in the paper.