  Previously, in an effective field theory formulated by us, we have carried
out parameter-free calculations of a large number of low-energy two-nucleon
properties. An experiment at the Institut Laue-Langevin is currently measuring
spin-dependent effects in the polarized np capture process \vec{n}+\vec{p} -> d
+\gamma at threshold. Noting that spin-dependent observables for this reaction
are sensitive to terms of chiral orders higher than hitherto studied, we extend
our effective theory approach to this process and make parameter-free
predictions on the spin-dependent observables.
