TY - JOUR
T1 - Lattice extraction of K→ππ amplitudes to O(p4) in chiral perturbation theory
AU - Laiho, Jack
AU - Soni, Amarjit
PY - 2002
Y1 - 2002
N2 - We show that the lattice calculation of K→ππ and ε′ / ε amplitudes for (8,1) and (27,1) operators to O(p4) in chiral perturbation theory is feasible when one uses K→ππ computations at the two unphysical kinematics allowed by the Maiani-Testa theorem, along with the usual (computable) two- and three-point functions, namely K→0, K→π (with-momentum), and K-K̄. Explicit expressions for the finite logarithms emerging from our O(p4) analysis to the above amplitudes are also given.
AB - We show that the lattice calculation of K→ππ and ε′ / ε amplitudes for (8,1) and (27,1) operators to O(p4) in chiral perturbation theory is feasible when one uses K→ππ computations at the two unphysical kinematics allowed by the Maiani-Testa theorem, along with the usual (computable) two- and three-point functions, namely K→0, K→π (with-momentum), and K-K̄. Explicit expressions for the finite logarithms emerging from our O(p4) analysis to the above amplitudes are also given.
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U2 - 10.1103/PhysRevD.65.114020
DO - 10.1103/PhysRevD.65.114020
M3 - Article
AN - SCOPUS:0036612837
SN - 1550-7998
VL - 65
JO - Physical review D: Particles and fields
JF - Physical review D: Particles and fields
IS - 11
M1 - 114020
ER -