Large Effects of CP- and T-Violation in K^0 Decay
High Energy Physics - Phenomenology
2009-10-31 v2
Abstract
The epsilon-impurity of the K_L wave-function gives rise to a huge CP-violating effect in the decay K_L -> pi^+ pi^- gamma which is hidden in the polarization state (Stokes vector) of the photon. One component of the Stokes vector is CP-odd and T-even, and may be identified with circular polarization. Another component is CP-odd and T-odd (``oblique polarization'') and reveals itself as a large asymmetry (14%) in the decay K_L -> pi^+ pi^- e^+ e^-. Striking time-dependent effects are predicted in the angular distribution of the pi^+ pi^- e^+ e^- system emanating from an initial K^0 or K^0bar state.
Cite
@article{arxiv.hep-ph/0011149,
title = {Large Effects of CP- and T-Violation in K^0 Decay},
author = {L. M. Sehgal},
journal= {arXiv preprint arXiv:hep-ph/0011149},
year = {2009}
}
Comments
5 pages, 6 figures, talk at International Conference on CP Violation Physics, 18-22 September 2000, Ferrara, Italy, minor typos corrected