Soft superweak CP violation and the strong CP puzzle
نویسندگان
چکیده
منابع مشابه
Soft Superweak CP Violation and the Strong CP Puzzle
We discuss a class of models in which CP is violated softly in a heavy sector adjoined to the standard model. Heavy-sector loops produce the observed CP violation in kaon physics, yielding a tiny and probably undetectable value for ǫ. All other CPviolating parameters in the effective low-energy standard model, including the area of the unitarity triangle and θ, are finite, calculable and can be...
متن کاملep - p h / 98 07 39 9 v 1 1 6 Ju l 1 99 8 Soft Superweak CP Violation and the Strong CP Puzzle ∗
We discuss a class of models in which CP is violated softly in a heavy sector adjoined to the standard model. Heavy-sector loops produce the observed CP violation in kaon physics, thus yielding a tiny and probably undetectable value for ǫ. All other CPviolating parameters in the effective low-energy standard model, including the area of the unitarity triangle and θ, are finite, calculable and c...
متن کاملModel of Soft CP Violation
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 sev...
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This lecture, directed to an broad audience including non-specialists, presents a short review of the problem of strong CP symmetry maintenance. The problem is defined and the possible solutions briefly reviewed. I discuss the way in which Roberto Peccei and I came up with one solution, generally known as Peccei-Quinn symmetry. Dirac Medal Lecture 2001 Presented at the International Centre for ...
متن کاملThe Measure of Strong CP Violation
We investigate a controversial issue on the measure of CP violation in strong interactions. In the presence of nontrivial topological gauge configurations, the θ-term in QCD has a profound effect: it breaks the CP symmetry. The CP-violating amplitude is shown to be determined by the vacuum tunneling process, where the semiclassical method makes most sense. We discuss a long-standing dispute on ...
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ژورنال
عنوان ژورنال: Physics Letters B
سال: 1999
ISSN: 0370-2693
DOI: 10.1016/s0370-2693(99)00246-4