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Title:
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Nonmesonic weak decay of the hypertriton
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Author:
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Bennhold, Cornelius; Ramos Gómez, Àngels; Aruliah, D. A.; Oelfke, U.
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Other authors:
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Universitat de Barcelona |
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Abstract:
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The nonmesonic decay of the hypertriton is calculated based on a hypertriton wave function and 3N scattering states, which are rigorous solutions of three-body Faddeev equations using realistic NN and hyperon-nucleon interactions. The pion exchange together with heavier meson exchanges for the {Lambda}N{r_arrow}NN transition is considered. The total nonmesonic decay rate is found to be 0.5{percent} of the free {Lambda} decay rate. Integrated as well as differential decay rates are given. The p- and n-induced decays are discussed thoroughly and it is shown that the corresponding total rates cannot be measured individually. |
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Abstract:
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The nonmesonic weak decay of
3
Λ
H
is evaluated microscopically in the pion exchange model. The correlated three-body wave function of the hypertriton is approximated by a bound Λ-deuteron system obtained by averaging the YN interaction over the deuteron wave function. The relevant matrix elements are calculated in momentum space. The resulting decay rate is 4.9% of the free Λ decay rate. |
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Subject(s):
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-Estructura nuclear
-Desintegració radioactiva
-Mesons (Física nuclear)
-Interaccions febles (Física nuclear)
-Nuclear structure
-Radioactive decay
-Mesons
-Weak interactions (Nuclear physics) |
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Rights:
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(c) The American Physical Society, 1992
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Document type:
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Article
Article - Published version |
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Published by:
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The American Physical Society
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