ϵ beyond the naive mass spectrum

Abstract

We study the physics of SU(3) gauge configurations on a 6 3 × 14 lattice obtained by a real space renormalization group transformation from configurations generated at β = 6.2 on a 18 3 × 42 lattice. We give results for Wilson loops and for hadron properties using Susskind fermions. These include a measurement of the hadron masses, the ϵ → ππ coupling constant and the matrix element 〈π| ψψ|π〉 which is related to ƒ π . We suggest an improved method of obtaining 〈 ψψ〉 . We also show that non-local operators in the Susskind formulation yield a cleaner signal for the ρ and π correlators and the corresponding masses are estimated more reliably.