Strong Isospin Breaking in CP-even and CP-odd K -> pi pi Decays

C. E. Wolfe; K. Maltman

doi:10.1063/1.1345258

Strong Isospin Breaking in CP-even and CP-odd K -> pi pi Decays

High Energy Physics - Phenomenology 2009-10-31 v1

Authors: C. E. Wolfe , K. Maltman

View on arXiv ↗ PDF ↗ DOI ↗

Abstract

Complete next-to-leading (chiral) order (NLO) expressions for the strong isospin-breaking (IB) contributions in K -> pi pi are used to discuss (1) for CP-even, the impact on the magnitude of the Delta I=1/2 Rule, and (2) for CP-odd, the strong IB correction, Omega_st, for the gluonic penguin contribution to epsilon'/epsilon, with particular emphasis on the strong low-energy constant (LEC) and loop contributions, numerical values for which are model-independent at NLO.

Keywords

strong isospin breaking K -> pi pi decays Delta I=1/2 rule epsilon'/epsilon chiral perturbation theory next-to-leading order low-energy constants

Cite

@article{arxiv.hep-ph/0007061,
  title  = {Strong Isospin Breaking in CP-even and CP-odd K -> pi pi Decays},
  author = {C. E. Wolfe and K. Maltman},
  journal= {arXiv preprint arXiv:hep-ph/0007061},
  year   = {2009}
}

Comments

4 pages. Contribution to the proceedings of the 7th Conference on the Intersections of Particle and Nuclear Physics (CIPANP), May 22-28 2000, Quebec City, Canada. Uses AIP 6x9 LaTeX style

Strong Isospin Breaking in CP-even and CP-odd K -> pi pi Decays

Abstract

Keywords

Cite

Comments

Related papers