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 -