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On the kaon-to-vacuum weak matrix element
- Source :
- Physics Letters B. 182:383-387
- Publication Year :
- 1986
- Publisher :
- Elsevier BV, 1986.
-
Abstract
- It is shown that the chiral Ward identities and PCAC do not constrain the kaon-to-vacuum amplitude to be quartic in the kaon mass, contrary to a recent claim. The estimate of the K → ππ amplitude by soft-pion techniques needs then the knowledge of both K → π and K → vacuum amplitudes.
Details
- ISSN :
- 03702693
- Volume :
- 182
- Database :
- OpenAIRE
- Journal :
- Physics Letters B
- Accession number :
- edsair.doi...........78357915e51bf5ce4150462a1c949cf4
- Full Text :
- https://doi.org/10.1016/0370-2693(86)90112-7