Abstract
We revisit the calculation of the long distance contribution to KL → μ+μ-. We discuss this process within the framework of chiral perturbation theory, and also using simple models for the KLγ*γ* vertex. We argue that it is unlikely that this mode can be used to extract information on short distance parameters. The process KL → e+e- is also long-distance dominated and we find that B(KL → e+e-) ≈ 9 × 10-12.
| Original language | English |
|---|---|
| Pages (from-to) | 339-352 |
| Number of pages | 14 |
| Journal | Nuclear Physics B |
| Volume | 517 |
| Issue number | 1-3 |
| Publication status | Published - 27 Apr 1998 |
| Externally published | Yes |
Keywords
- Chiral perturbation theory
- Rare kaon decays electromagnetic contributions to kaon decays long distance contributions