Instantons and the Delta I=1/2 rule - art. no. 111601

Authors
Kochelev, NI Vento, V
Citation
Ni. Kochelev et V. Vento, Instantons and the Delta I=1/2 rule - art. no. 111601, PHYS REV L, 8711(11), 2001, pp. 1601
Citations number
51
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
00319007 → ACNP
Volume
8711
Issue
11
Year of publication
2001
Database
ISI
SICI code
0031-9007(20010910)8711:11<1601:IATDIR>2.0.ZU;2-M
Abstract
The instanton-induced interaction leads to a significant enhancement of the A(0) weak amplitude determining the DeltaI = 1/2 rule, through the contrib ution of operators with dimension d = 9, as we show in the weak K --> pi pi decay.