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.
Becirevic, D., Lubicz, V., Martinelli, G., Mescia, F. (2001). First lattice calculation of the electromagnetic operator amplitude (Pi0|Q(+)gamma|K0). PHYSICS LETTERS. SECTION B, 501(1-2), 98-105 [10.1016/S0370-2693(01)00099-5].
First lattice calculation of the electromagnetic operator amplitude (Pi0|Q(+)gamma|K0)
LUBICZ, Vittorio;
2001-01-01
Abstract
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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
