TY - JOUR
T1 - Nonleptonic decays of K mesons revisited
AU - Blok, B.
AU - Shifman, M.
PY - 1992/11/19
Y1 - 1992/11/19
N2 - We estimate nonfactorizable 1 Nc contributions in the K→2π amplitudes using the approach proposed in our previous work. It is demonstrated that for the conventional (nonpenguin) operators these contributions are close in magnitude to factorizable 1 Nc parts and have the opposite sign. Thus, an approximate rule of discarding 1 Nc corrections in K→2πdecays is theoretically confirmed. As a result we find an extra suppression of the matrix element of 04 (δI = 3 2) and an extra enhancment of the matrix element of O1 (δI = 1 2). The parameter B describing K0-K0 mixing is also discussed.
AB - We estimate nonfactorizable 1 Nc contributions in the K→2π amplitudes using the approach proposed in our previous work. It is demonstrated that for the conventional (nonpenguin) operators these contributions are close in magnitude to factorizable 1 Nc parts and have the opposite sign. Thus, an approximate rule of discarding 1 Nc corrections in K→2πdecays is theoretically confirmed. As a result we find an extra suppression of the matrix element of 04 (δI = 3 2) and an extra enhancment of the matrix element of O1 (δI = 1 2). The parameter B describing K0-K0 mixing is also discussed.
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U2 - 10.1016/0370-2693(92)91543-I
DO - 10.1016/0370-2693(92)91543-I
M3 - Article
AN - SCOPUS:13844299719
SN - 0370-2693
VL - 294
SP - 417
EP - 424
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
IS - 3-4
ER -