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Titolo:
Strong enhancement of epsilon '/epsilon through final state interactions
Autore:
Pallante, E; Pich, A;
Indirizzi:
Univ Barcelona, Fac Fis, E-08028 Barcelona, Spain Univ Barcelona Barcelona Spain E-08028 Fac Fis, E-08028 Barcelona, Spain Univ Valencia, CSIC, IFIC, Dept Fis Teor, E-46071 Valencia, Spain Univ Valencia Valencia Spain E-46071 t Fis Teor, E-46071 Valencia, Spain
Titolo Testata:
PHYSICAL REVIEW LETTERS
fascicolo: 12, volume: 84, anno: 2000,
pagine: 2568 - 2571
SICI:
0031-9007(20000320)84:12<2568:SEOE'T>2.0.ZU;2-B
Fonte:
ISI
Lingua:
ENG
Soggetto:
TO-LEADING ORDER; HADRONIC MATRIX-ELEMENTS; ANOMALOUS DIMENSION MATRIX; WEAK NONLEPTONIC DECAYS; DIRECT CP VIOLATION; CHIRAL QUARK-MODEL; LARGE-N LIMIT; EFFECTIVE-HAMILTONIANS; DELTA-I=1/2 RULE; K->PI-PI DECAYS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
--discip_EC--
Citazioni:
64
Recensione:
Indirizzi per estratti:
Indirizzo: Pallante, E Univ Barcelona, Fac Fis, Diagonal 647, E-08028 Barcelona, Spain Univ Barcelona Diagonal 647 Barcelona Spain E-08028 na, Spain
Citazione:
E. Pallante e A. Pich, "Strong enhancement of epsilon '/epsilon through final state interactions", PHYS REV L, 84(12), 2000, pp. 2568-2571

Abstract

We quantify the important effect of strong final state interactions in theweak K --> 2 pi amplitudes, using the measured pi-pi phase shifts with J =0 and I = 0.2. The final rescattering of the two pions provides a strong enhancement of the Delta I = 1/2 amplitude, which so far has been neglected in the theoretical predictions of epsilon'/epsilon. This correction increases the standard model prediction of epsilon'/epsilon to values in good agreement with the experimental measurements.

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Documento generato il 23/09/20 alle ore 11:44:21