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Título:
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Neutron and proton spectra from the decay of Lambda hypernuclei
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Autor/a:
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Ramos Gómez, Àngels; Vicente-Vacas, M. J.; Oset Baguena, Eulogio
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Otros autores:
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Universitat de Barcelona |
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Abstract:
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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. |
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Materia(s):
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-Estructura nuclear
-Reaccions nuclears
-Mètode de Montecarlo
-Nuclear structure
-Nuclear reactions
-Monte Carlo method |
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Derechos:
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(c) The American Physical Society, 1997
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Tipo de documento:
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Artículo
Artículo - Versión publicada |
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Editor:
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The American Physical Society
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Compartir:
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