Title:
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Asymmetries in the nonmesonic weak decay of polarized Lambda-hypernuclei
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Author:
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Alberico, W. M.; Garbarino, G.; Parreño García, Assumpta; Ramos Gómez, Àngels
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Other authors:
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Universitat de Barcelona |
Abstract:
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The nonmesonic weak decay of polarized
Λ
hypernuclei is studied for the first time by taking into account, with a Monte Carlo intranuclear cascade code, the nucleon final state interactions. A one-meson-exchange model is employed to describe the
→
Λ
N
→
n
N
processes in a finite nucleus framework. The relationship between the intrinsic
Λ
asymmetry parameter
a
Λ
and the asymmetry
a
M
Λ
accessible in experiments is discussed. A strong dependence of
a
M
Λ
on nucleon final state interactions and detection threshold is obtained. Our results for
a
M
Λ
are consistent with
11
Λ
→
B
and
12
Λ
→
C
data but disagree with observations in
5
Λ
→
H
e
. |
Subject(s):
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-Estructura nuclear -Hiperons -Reaccions nuclears -Nuclear structure -Hyperons -Nuclear reactions |
Rights:
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(c) American Physical Society, 2005
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Document type:
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Article Article - Published version |
Published by:
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American Physical Society
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