Quantum Discrete Symmetry and the Strong CP Problem

Details Quantum Discrete Symmetry and the Strong CP Problem Quantum Discrete Symmetry and the Strong CP Problem

1997-06-04

arxiv.org/abs/hep-ph/9706250v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages TeX, uses mtexsis.tex

Scientific paper

We study a 2N-flavor effective theory of N-flavor QCD. With the axial anomaly accounted for in the effective theory by a 't Hooft interaction, only QCD conserved currents survive. However, there is a residual discrete symmetry with interesting properties. With non-vanishing quark masses, this S_2 symmetry is broken unless \bar\theta=0 or pi. We further show that there is a sense in which hadrons in the effective theory fall into S_2 multiplets. Surprisingly, predictions of this multiplet structure in the four-flavor effective theory are in good agreement with experiment and have been found previously by imposing Regge asymptotic constraints on pion-hadron scattering amplitudes.

Affiliated with

Also associated with

No associations

Rating

Quantum Discrete Symmetry and the Strong CP Problem 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 Quantum Discrete Symmetry and the Strong CP Problem, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Quantum Discrete Symmetry and the Strong CP Problem will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-552710