We present a numerical computation of matrix elements of ΔI = 3/2 K → ππ decays by using Wilson fermions. In order to extrapolate to the physical point we work at unphysical kinematics and we resort to Chiral Perturbation Theory at the next-to-leading order. In particular we explain the case of the electroweak penguins O7,8 which can contribute significantly in the theoretical prediction of ε′/ε. The study is done at β = 6.0 on a 243 × 64 lattice.

Matrix elements of Delta I = 3/2 K ---> pi pi decays / P., Boucaud; Martinelli, Guido; Spqcdr, Collaboration; V., Giménez; C. J. D., Lin; V., Lubicz; Papinutto, MAURO LUCIO; C. T., Sachrajda. - In: NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS. - ISSN 0920-5632. - 129:(2004), pp. 314-316. (Intervento presentato al convegno LATT03 tenutosi a KEK, Tsukuba, Japan) [10.1016/S0920-5632(03)02567-2].

Matrix elements of Delta I = 3/2 K ---> pi pi decays

MARTINELLI, Guido;PAPINUTTO, MAURO LUCIO;
2004

Abstract

We present a numerical computation of matrix elements of ΔI = 3/2 K → ππ decays by using Wilson fermions. In order to extrapolate to the physical point we work at unphysical kinematics and we resort to Chiral Perturbation Theory at the next-to-leading order. In particular we explain the case of the electroweak penguins O7,8 which can contribute significantly in the theoretical prediction of ε′/ε. The study is done at β = 6.0 on a 243 × 64 lattice.
2004
LATT03
quantum chromodynamics; lattices; mass fermions
04 Pubblicazione in atti di convegno::04c Atto di convegno in rivista
Matrix elements of Delta I = 3/2 K ---> pi pi decays / P., Boucaud; Martinelli, Guido; Spqcdr, Collaboration; V., Giménez; C. J. D., Lin; V., Lubicz; Papinutto, MAURO LUCIO; C. T., Sachrajda. - In: NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS. - ISSN 0920-5632. - 129:(2004), pp. 314-316. (Intervento presentato al convegno LATT03 tenutosi a KEK, Tsukuba, Japan) [10.1016/S0920-5632(03)02567-2].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/186166
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