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In the axionic solution of the strong CP problem, fermions which transform under quantum chromodynamics (QCD) are required.
E. Ma, Mod. Phys. Lett. A14
1999
Earlier work this paper cites.
D. A. Demir and E. Ma, Phys. Rev. D62
2000
Earlier work this paper cites.
D. A. Demir, E. Ma, and U. Sarkar, J. Phys. G26
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D. A. Demir and E. Ma, J. Phys. G27
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Cited alongside, same era.
E. Ma, Phys. Lett. B514
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Cited alongside, same era.
For a recent review, see for example R. D. Peccei, hep-ph/0607268
Cited in the paper.
See for example G. Raffelt, hep-ph/0611350
Cited in the paper.
E. Ma, J. Phys. G29
2003
Later among the works it cites.
See for example B. Feldstein, L. J. Hall, and T. Watari, Phys. Lett. B607
2005
Later among the works it cites.
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