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Neutron and proton spectra from the decay of $Λ$ hypernuclei

A. Ramos·M. J. Vicente-Vacas·E. Oset
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Abstract

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 ($N_n$) and protons ($N_p$) per $Λ$ decay and show how the measurement of these quantities, particularly $N_p$, can lead to a determination of $Γ_n / Γ_p$, 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 $Γ_n / Γ_p$ with respect to what is obtained neglecting this channel.

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A. Ramos, M. J. Vicente-Vacas, E. Oset. 1996-07-03. Neutron and proton spectra from the decay of $Λ$ hypernuclei. https://doi.org/10.1103/physrevc.55.735%2010.1103%2Fphysrevc.66.039903

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