Asymmetry parameter for the nonmesonic decay of Λ5He

We report the preliminary result of an exact calculation of the asymmetry parameter, aΛ, in the nonmesonic hypernuclear decay, based on a one-meson-exchange (OME) model. For the case of Λ 5He and including one-pion-exchange only, the result is shown not to differ considerably from the one obtained w...

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Detalles Bibliográficos
Autores principales: Barbero, César Alberto, Galeão, Alfredo Pio, Krmpotić, Francisco
Formato: Articulo
Lenguaje:Inglés
Publicado: 2004
Materias:
Física
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/84812
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-84812
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Física
spellingShingle Física
Barbero, César Alberto
Galeão, Alfredo Pio
Krmpotić, Francisco
Asymmetry parameter for the nonmesonic decay of Λ5He
topic_facet Física
description We report the preliminary result of an exact calculation of the asymmetry parameter, aΛ, in the nonmesonic hypernuclear decay, based on a one-meson-exchange (OME) model. For the case of Λ 5He and including one-pion-exchange only, the result is shown not to differ considerably from the one obtained with the approximate formula widely used in the literature. In particular, the sign of aΛ remains negative, in disagreement with its most recent experimental determination. Whether these facts remain true for heavier hypernuclei and in a more complete OME model is still under investigation.
format Articulo
Articulo
author Barbero, César Alberto
Galeão, Alfredo Pio
Krmpotić, Francisco
author_facet Barbero, César Alberto
Galeão, Alfredo Pio
Krmpotić, Francisco
author_sort Barbero, César Alberto
title Asymmetry parameter for the nonmesonic decay of Λ5He
title_short Asymmetry parameter for the nonmesonic decay of Λ5He
title_full Asymmetry parameter for the nonmesonic decay of Λ5He
title_fullStr Asymmetry parameter for the nonmesonic decay of Λ5He
title_full_unstemmed Asymmetry parameter for the nonmesonic decay of Λ5He
title_sort asymmetry parameter for the nonmesonic decay of λ5he
publishDate 2004
url http://sedici.unlp.edu.ar/handle/10915/84812
work_keys_str_mv AT barberocesaralberto asymmetryparameterforthenonmesonicdecayofl5he
AT galeaoalfredopio asymmetryparameterforthenonmesonicdecayofl5he
AT krmpoticfrancisco asymmetryparameterforthenonmesonicdecayofl5he
bdutipo_str Repositorios
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