Final state interactions effects on kinetic energy sum spectra in nonmesonic weak decay

We analyze the effect of final state interactions (FSI) on coincidence spectra in nonmesonic hypernuclear weak decay, ΛN → nN, as a function of the kinetic energy sum, EnN = En +EN, both for np and nn events. Adopting a formalism recently developed, the effects of FSI originated from the interaction...

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Autores principales: Barbero, César Alberto, Mariano, Alejandro Edgardo, Duarte, S. B.
Formato: Articulo
Lenguaje:Inglés
Publicado: 2010
Materias:
Física
Final state interactions
Hypernuclei
Sum spectra
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/82489
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-82489
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Física
Final state interactions
Hypernuclei
Sum spectra
spellingShingle Física
Final state interactions
Hypernuclei
Sum spectra
Barbero, César Alberto
Mariano, Alejandro Edgardo
Duarte, S. B.
Final state interactions effects on kinetic energy sum spectra in nonmesonic weak decay
topic_facet Física
Final state interactions
Hypernuclei
Sum spectra
description We analyze the effect of final state interactions (FSI) on coincidence spectra in nonmesonic hypernuclear weak decay, ΛN → nN, as a function of the kinetic energy sum, EnN = En +EN, both for np and nn events. Adopting a formalism recently developed, the effects of FSI originated from the interaction between the outgoing nucleons and those in the residual core are included analytically in a very simple way within the eikonal approximation through the modification of the emerging particles momenta. Numerical results are shown for 5 Λ He and 12 Λ C hypernucleus. We found that coincidence spectra are only slightly modified and the disagreement between theory and experimental data still persists, mainly for nn events in 5 Λ He where enough statistics exists. We conclude that admixtures of excitations in the final state produced by FSI need to be added to our approach in order to improve the agreement with data.
format Articulo
Articulo
author Barbero, César Alberto
Mariano, Alejandro Edgardo
Duarte, S. B.
author_facet Barbero, César Alberto
Mariano, Alejandro Edgardo
Duarte, S. B.
author_sort Barbero, César Alberto
title Final state interactions effects on kinetic energy sum spectra in nonmesonic weak decay
title_short Final state interactions effects on kinetic energy sum spectra in nonmesonic weak decay
title_full Final state interactions effects on kinetic energy sum spectra in nonmesonic weak decay
title_fullStr Final state interactions effects on kinetic energy sum spectra in nonmesonic weak decay
title_full_unstemmed Final state interactions effects on kinetic energy sum spectra in nonmesonic weak decay
title_sort final state interactions effects on kinetic energy sum spectra in nonmesonic weak decay
publishDate 2010
url http://sedici.unlp.edu.ar/handle/10915/82489
work_keys_str_mv AT barberocesaralberto finalstateinteractionseffectsonkineticenergysumspectrainnonmesonicweakdecay
AT marianoalejandroedgardo finalstateinteractionseffectsonkineticenergysumspectrainnonmesonicweakdecay
AT duartesb finalstateinteractionseffectsonkineticenergysumspectrainnonmesonicweakdecay
bdutipo_str Repositorios
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