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Title: Neutron and proton spectra from the decay of Lambda hypernuclei
Author: Ramos Gómez, Àngels
Vicente-Vacas, M. J.
Oset Baguena, Eulogio
Keywords: Estructura nuclear
Reaccions nuclears
Mètode de Montecarlo
Nuclear structure
Nuclear reactions
Monte Carlo method
Issue Date: 1997
Publisher: The American Physical Society
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. The shape of the proton spectrum is sensitive to the value of Γ n / Γ p the ratio of neutron- to proton-induced decay, and the available experimental information favors larger values than those predicted by the one-pion-exchange model. 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 . We also show that the consideration of the two-nucleon-induced channel has a repercussion on the results, widening the band of allowed values of Γ n / Γ p with respect to what is obtained neglecting this channel.
Note: Reproducció digital del document publicat en format paper, proporcionada per PROLA i
It is part of: Physical Review C, 1997, vol. 55, núm. 2, p. 735-744
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ISSN: 0556-2813
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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