Zusammenfassung
Working with a pion mass m(pi) approximate to 150 MeV, we study pi pi and K-pi scattering using two flavors of nonperturbatively improved Wilson fermions at a lattice spacing a approximate to 0.071 fm. Employing two lattice volumes with linear spatial extents of N-s = 48 and N-s = 64 points and moving frames, we extract the phase shifts for p-wave pi pi and K pi scattering near the rho and K* ...
Zusammenfassung
Working with a pion mass m(pi) approximate to 150 MeV, we study pi pi and K-pi scattering using two flavors of nonperturbatively improved Wilson fermions at a lattice spacing a approximate to 0.071 fm. Employing two lattice volumes with linear spatial extents of N-s = 48 and N-s = 64 points and moving frames, we extract the phase shifts for p-wave pi pi and K pi scattering near the rho and K* resonances. Comparing our results to those of previous lattice studies, that used pion masses ranging from about 200 MeV up to 470 MeV, we find that the coupling g(rho pi pi) appears to be remarkably constant as a function of m(pi).
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