Double beta decay of Σ-hyperons

We compute the strangeness-conserving double beta decay of Σ- hyperons, which is the only hadronic system that can undergo such decays. We consider both, the lepton number conserving Σ- → Σ+e-e-νν (ββΣ2ν) and the lepton number violating Σ- → Σ+e-e- (ββΣ0ν) modes. The branching ratios of these ββ dec...

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Autores principales: Barbero, César Alberto, López Castro, G., Mariano, Alejandro Edgardo
Formato: Articulo
Lenguaje:Inglés
Publicado: 2003
Materias:
Física
Double-beta decay
Σ hyperon
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/83463
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-83463
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Física
Double-beta decay
Σ hyperon
spellingShingle Física
Double-beta decay
Σ hyperon
Barbero, César Alberto
López Castro, G.
Mariano, Alejandro Edgardo
Double beta decay of Σ-hyperons
topic_facet Física
Double-beta decay
Σ hyperon
description We compute the strangeness-conserving double beta decay of Σ- hyperons, which is the only hadronic system that can undergo such decays. We consider both, the lepton number conserving Σ- → Σ+e-e-νν (ββΣ2ν) and the lepton number violating Σ- → Σ+e-e- (ββΣ0ν) modes. The branching ratios of these ββ decays are suppressed at the level of 10-30 considering a light neutrino scenario in the case of the ββΣ0ν channel. The dynamical origin of such low rates and their possible enhancements are briefly discussed. Given its simplicity those decays can be used also for the purposes of illustrating the main features of double beta decays.
format Articulo
Articulo
author Barbero, César Alberto
López Castro, G.
Mariano, Alejandro Edgardo
author_facet Barbero, César Alberto
López Castro, G.
Mariano, Alejandro Edgardo
author_sort Barbero, César Alberto
title Double beta decay of Σ-hyperons
title_short Double beta decay of Σ-hyperons
title_full Double beta decay of Σ-hyperons
title_fullStr Double beta decay of Σ-hyperons
title_full_unstemmed Double beta decay of Σ-hyperons
title_sort double beta decay of σ-hyperons
publishDate 2003
url http://sedici.unlp.edu.ar/handle/10915/83463
work_keys_str_mv AT barberocesaralberto doublebetadecayofshyperons
AT lopezcastrog doublebetadecayofshyperons
AT marianoalejandroedgardo doublebetadecayofshyperons
bdutipo_str Repositorios
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