On the Anomalous Discrete Symmetry

Details On the Anomalous Discrete Symmetry On the Anomalous Discrete Symmetry

1992-09-14

arxiv.org/abs/hep-ph/9209234v1

Phys.Rev.D46:4818-4821,1992

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 papges in LaTeX, SFU-Preprint-92-7

Scientific paper

10.1103/PhysRevD.46.R4818

We examine an interesting scenario to solve the domain wall problem recently suggested by Preskill, Trivedi, Wilczek and Wise. The effective potential is calculated in the presence of the QCD axial anomaly. It is shown that some discrete symmetries such as CP and Z_2 can be anomalous due to a so-called $K$-term induced by instantons. We point out that Z_2 domain-wall problem in the two-doublet standard model can be resolved by two types of solutions: the CP-conserving one and the CP-breaking one. In the first case, there exist two Z_2-related local minima whose energy splitting is provided by the instanton effect. In the second case, there is only one unique vacuum so that the domain walls do not form at all. The consequences of this new source of CP violation are discussed and shown to be well within the experimental limits in weak interactions.

Affiliated with

Also associated with

No associations

Rating

On the Anomalous Discrete Symmetry does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with On the Anomalous Discrete Symmetry, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On the Anomalous Discrete Symmetry will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-542655