Cabibbo mixing and the search for<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>CP</mml:mi></mml:math>violation in the aspon model

Frampton, Paul H.; Glashow, Sheldon L.

doi:10.1103/physrevd.55.1691

Cited by 14 publications

(25 citation statements)

References 12 publications

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“…Because of the observation of large CP asymmetries in decay of (B 0 ,B 0 ) at B Factories[1, 2] the option of soft CP violation [13,14,15] as solution of strong CP is disfavored though not excluded. Two popular alternative solutions, a massless up quark and an (invisible) axion have theoretical and empirical difficulties [5,6].…”

Section: Discussionmentioning

confidence: 99%

SUFFICIENTLY SMALL $\bar\theta$inSU(3)³ × S₃ UNIFICATION MODEL

et al. 2002

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Since CP violation in weak decays is successfully described by the KM mechanism, the strong CP problem cannot easily be 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 ×S 3 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 theθ parameter of the QCD sub-theory is guaranteed to be sufficiently small. We findθ < 10 −11 while the empirical limit from the neutron electric dipole moment requires only thatθ < 1.3 × 10 −10 .Emails:

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Section: Discussionmentioning

confidence: 99%

SUFFICIENTLY SMALL $\bar\theta$inSU(3)³ × S₃ UNIFICATION MODEL

et al. 2002

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“…Most of these models have been excluded by experiment: they are superweak mimics that cannot reproduce the observed value of ͑e 0 ͞e͒ K . [10].…”

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confidence: 95%

“…We turn to the question direct CP violation in the kaon sector, such as discussed in [9][10][11]. Here our model differs radically from its predecessor: the exchange of a duark between two quark pairs, as shown in Fig.…”

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confidence: 97%

Model of SoftCPViolation Using Scalars with Quark Number Two

2001

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We propose a model of soft CP violation that evades the strong CP problem and can describe observed CP violation in the neutral kaon sector, both direct and indirect. Our model requires two "duark" mesons carrying quark number two that have complex (CP-violating) bare masses and are coupled to quark pairs. Aside from the existence of these potentially observable new particles with masses of several hundred GeV, we predict a flat unitarity triangle (i.e., no observable direct CP violation in the B-meson sector) and a possibly anomalous branching ratio for the decay mode K+-->pi(+)+nu(nu).

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“…where M is the mass of Q then the requirements of strong CP and naturalness constrain |x i | 2 to be [6] 3 × 10…”

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confidence: 99%