出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：We present the calculation of K !pp matrix elements of electroweak penguin operators i.e. Q7
and Q8. In the numerical simulation, we use the gauge configurations generated by the combination
of Nf = 2 domain-wall fermions and DBW2 gauge action. From K !p and K ! 0
matrix elements on the lattice, we construct K !pp matrix elements at next-to-leading order in
the chiral expansion by using recent analytic results. Renormalization factor of these matrix elements
are obtained by the non-perturbative renormalization technique in RI/MOM scheme. Brief
discussion based on our results are made as well as a comparison with previous works.
