Aspects of soft and spontaneous CP violation

Journal Article · Mon Feb 01 04:00:00 EST 1999 · Physical Review, D

DOI:https://doi.org/10.1103/PhysRevD.59.036004· OSTI ID:295597

Frampton, P H; Harada, M ^[1]

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1. Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27599-3255 (United States)

We study four different models for CP violation: the standard Kobayashi-Maskawa (KM) model, the aspon model of spontaneous breaking, and two models of soft breaking. In all except the standard model, the strong CP problem is addressed and solved. Testable predictions for the area of the unitarity triangle and for ({epsilon}{sup {prime}}/{epsilon}){sub K} are emphasized. The issue of CP violation may well become the first place where the standard model of particle theory is shown definitively to be deficient. There are two reasons for expecting this to happen: (1) the strong CP problem is still not understood in the unadorned standard model and (2) the KM mechanism, although unquestionably present, may not provide the full explanation of {epsilon}{sub K} and ({epsilon}{sup {prime}}/{epsilon}){sub K}. {copyright} {ital 1999} {ital The American Physical Society}

• OSTI ID: 295597
• Journal Information: Physical Review, D, Journal Name: Physical Review, D Journal Issue: 3 Vol. 59; ISSN 0556-2821; ISSN PRVDAQ
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
CP INVARIANCE
STANDARD MODEL
SU-2 GROUPS
SYMMETRY BREAKING