SUFFICIENTLY SMALL $\bar\theta$inSU(3)3 × S3 UNIFICATION MODEL
2002 ◽
Vol 17
(23)
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pp. 1513-1524
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Up Quark
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Since CP violation in weak decays is successfully described by the KM mechanism, the strong CP problem cannot be easily accommodated. This leads us to reconsider the issue. If the axion and massless up quark are abandoned, we must extend the standard model. Extension to SU (3)3 × S3 unification leads to the following situation: if CP is a high-energy symmetry and the appropriate symmetry-breaking hierarchy of scales is in place, then the [Formula: see text] parameter of the QCD sub-theory is guaranteed to be sufficiently small. We find [Formula: see text] while the empirical limit from the neutron electric dipole moment requires only that [Formula: see text].
2003 ◽
Vol 18
(10)
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pp. 1697-1732
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2000 ◽
Vol 15
(19)
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pp. 2987-2999
1990 ◽
Vol 47
(4)
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pp. 663-668
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2002 ◽
Vol 17
(23)
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pp. 1489-1497
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Keyword(s):
1990 ◽
Vol 16
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pp. 368-370
Keyword(s):
1990 ◽
Vol 05
(27)
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pp. 2271-2280
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Keyword(s):
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