ar X iv : h ep - l at / 0 31 10 03 v 1 3 N ov 2 00 3 1 I = 2 ππ scattering using G - parity boundary condition ∗

ar X iv : h ep - p h / 03 11 27 4 v 1 2 1 N ov 2 00 3 Isospin Breaking in K l 4 Decays of the Charged Kaon

The charged K ℓ4 decay, K + → π + π − ℓ + ν ℓ is studied in the framework of chiral perturbation theory based on the effective Lagrangian including mesons, photons, and leptons. We give analytic expressions for the two vectorial form factors, f and g, calculated at one-loop level in the presence of Isospin breaking effects. These expressions may then be used to disentangle the Isospin breaking ...

ar X iv : h ep - l at / 0 01 10 25 v 1 3 N ov 2 00 0 1 N ∗ Spectrum using an O ( a ) - Improved Fermion Action

The construction of operators and calculational methods for the determination of the N * spectrum are discussed. The masses of the parity partners of the nucleon and delta are computed from the O(a)-improved data of the UKQCD Collaboration, and a clear splitting observed between the mass of the nucleon and its parity partner.

ar X iv : h ep - l at / 0 11 00 06 v 3 6 N ov 2 00 1 1 Matrix elements of ∆ S = 2 operators with Wilson fermions

ar X iv : h ep - p h / 04 05 11 8 v 1 1 3 M ay 2 00 4 Understanding I = 2 ππ Interaction

A correct understanding and description of the I = 2 ππ S-wave interaction is important for the extraction of the I = 0 ππ S-wave interaction from experimental data and for understanding the I = 0 ππ S-wave interaction theoretically. With t-channel ρ, f 2 (1270) exchange and the ππ → ρρ → ππ box diagram contribution, we reproduce the ππ isotensor S-wave and D-wave scattering phase shifts and in...

ar X iv : h ep - l at / 0 20 90 56 v 1 4 S ep 2 00 2 1 I = 2 Pion Scattering Phase Shift with Wilson Fermions ∗

We present results of phase shift for I = 2 S-wave ππ system with the Wilson fermions in the quenched approximation. The finite size method proposed by Lüscher is employed, and calculations are carried out at