We have determined the spectra of neutrons and protons following the decay of
Λ hypernuclei through the one- and two-nucleon induced mechanisms. The
momentum distributions of the primary nucleons are calculated and a Monte Carlo
simulation is used to account for final state interactions. From the spectra we
calculate the number of neutrons (Nn​) and protons (Np​) per Λ
decay and show how the measurement of these quantities, particularly Np​, can
lead to a determination of Γn​/Γp​, the ratio of neutron to
proton induced Λ decay. We also show that the consideration of the
two-nucleon induced channel has a repercussion in the results, widening the
band of allowed values of Γn​/Γp​ with respect to what is
obtained neglecting this channel.Comment: 30 pages, 12 Postscript figures, uuencoded file, ReVTeX, epsf.st