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Asymmetries in the nonmesonic weak decay of polarized Lambda-hypernuclei
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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
.
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ALBERICO, W. M., et al. Asymmetries in the nonmesonic weak decay of polarized Lambda-hypernuclei. Physical Review Letters. 2005. Vol. 94, num. 8, pags. 082501-1-082501-4. ISSN 0031-9007. [consulted: 24 of June of 2026]. Available at: https://hdl.handle.net/2445/12837