First lattice calculation of the electromagnetic operator amplitude ⟨π0|Qγ+|K0⟩

被引：21

作者：

Becirevic, D

Lubicz, V

Martinelli, G

Mescia, F

机构：

[1] Univ Rome La Sapienza, Dipartimento Fis, I-00185 Rome, Italy

[2] Ist Nazl Fis Nucl, Sez Roma, I-00185 Rome, Italy

[3] Univ Roma Tre, Dipartimento Fis, I-00146 Rome, Italy

[4] Univ Roma Tre, Ist Nazl Fis Nucl, Sez Roma Tre, I-00146 Rome, Italy

来源：

PHYSICS LETTERS B | 2001年 / 501卷 / 1-2期

关键词：

D O I：

10.1016/S0370-2693(01)00099-5

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present the first lattice calculation of the matrix element of the electromagnetic operator [pi (0)/Q(gamma)(+)/K-0], where = Q(gamma)(+) = (Q(d)e/16 pi (2))((s) over bar (L)sigma (mu nu) F(mu nu)d(R) + (s) over bar (R)sigma (mu nu) F(mu nu)d(L)) This matrix element plays an important roe, since it contributes to enhance the CP violating part of the K-L --> pi (0)e(+)e(-) amplitude in supersymmetric extensions of the Standard Model. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：98 / 105

页数：8

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