Nucleon-Deuteron Scattering from an Effective Field Theory

We use an effective field theory to compute low-energy nucleon-deuteron scattering. We obtain the quartet scattering length using low energy constants entirely determined from low-energy nucleon-nucleon scattering. We find $a_{th}=6.33$ fm, to be compared to $a_{exp}=6.35\pm 0.02$ fm.