Matrix elements of four-quark operators and ΔL = 2 hyperon decays
- Autores
- Barbero, César Alberto; Li, Ling-Fong; López Castro, G.; Mariano, Alejandro Edgardo
- Año de publicación
- 2013
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- The study of neutrinoless double beta decays of nuclei and hyperons requires the calculation of hadronic matrix elements of local four-quark operators that change the total charge by two units ΔQ = 2. Using a low energy effective Lagrangian that induces these transitions, we compute these hadronic matrix elements in the framework of the Massachussetts Institute of Technology bag model. As an illustrative example we evaluate the amplitude and transition rate of ε- → pe-e-, a decay process that violates lepton number by two units (ΔL = 2). The relevant matrix element is evaluated without assuming the usual factorization approximation of the four-quark operators and the results obtained in both approaches are compared.
Facultad de Ciencias Exactas
Consejo Nacional de Investigaciones Científicas y Técnicas - Materia
- Física
- Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by/4.0/
- Repositorio
.jpg)
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/143430
Ver los metadatos del registro completo
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Matrix elements of four-quark operators and ΔL = 2 hyperon decaysBarbero, César AlbertoLi, Ling-FongLópez Castro, G.Mariano, Alejandro EdgardoFísicaThe study of neutrinoless double beta decays of nuclei and hyperons requires the calculation of hadronic matrix elements of local four-quark operators that change the total charge by two units ΔQ = 2. Using a low energy effective Lagrangian that induces these transitions, we compute these hadronic matrix elements in the framework of the Massachussetts Institute of Technology bag model. As an illustrative example we evaluate the amplitude and transition rate of ε- → pe-e-, a decay process that violates lepton number by two units (ΔL = 2). The relevant matrix element is evaluated without assuming the usual factorization approximation of the four-quark operators and the results obtained in both approaches are compared.Facultad de Ciencias ExactasConsejo Nacional de Investigaciones Científicas y Técnicas2013-02-20info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/143430enginfo:eu-repo/semantics/altIdentifier/issn/1550-7998info:eu-repo/semantics/altIdentifier/issn/1550-2368info:eu-repo/semantics/altIdentifier/doi/10.1103/physrevd.87.036010info:eu-repo/semantics/altIdentifier/arxiv/1301.3448v1info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International (CC BY 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-10-22T17:13:16Zoai:sedici.unlp.edu.ar:10915/143430Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-22 17:13:17.239SEDICI (UNLP) - Universidad Nacional de La Platafalse |
| dc.title.none.fl_str_mv |
Matrix elements of four-quark operators and ΔL = 2 hyperon decays |
| title |
Matrix elements of four-quark operators and ΔL = 2 hyperon decays |
| spellingShingle |
Matrix elements of four-quark operators and ΔL = 2 hyperon decays Barbero, César Alberto Física |
| title_short |
Matrix elements of four-quark operators and ΔL = 2 hyperon decays |
| title_full |
Matrix elements of four-quark operators and ΔL = 2 hyperon decays |
| title_fullStr |
Matrix elements of four-quark operators and ΔL = 2 hyperon decays |
| title_full_unstemmed |
Matrix elements of four-quark operators and ΔL = 2 hyperon decays |
| title_sort |
Matrix elements of four-quark operators and ΔL = 2 hyperon decays |
| dc.creator.none.fl_str_mv |
Barbero, César Alberto Li, Ling-Fong López Castro, G. Mariano, Alejandro Edgardo |
| author |
Barbero, César Alberto |
| author_facet |
Barbero, César Alberto Li, Ling-Fong López Castro, G. Mariano, Alejandro Edgardo |
| author_role |
author |
| author2 |
Li, Ling-Fong López Castro, G. Mariano, Alejandro Edgardo |
| author2_role |
author author author |
| dc.subject.none.fl_str_mv |
Física |
| topic |
Física |
| dc.description.none.fl_txt_mv |
The study of neutrinoless double beta decays of nuclei and hyperons requires the calculation of hadronic matrix elements of local four-quark operators that change the total charge by two units ΔQ = 2. Using a low energy effective Lagrangian that induces these transitions, we compute these hadronic matrix elements in the framework of the Massachussetts Institute of Technology bag model. As an illustrative example we evaluate the amplitude and transition rate of ε- → pe-e-, a decay process that violates lepton number by two units (ΔL = 2). The relevant matrix element is evaluated without assuming the usual factorization approximation of the four-quark operators and the results obtained in both approaches are compared. Facultad de Ciencias Exactas Consejo Nacional de Investigaciones Científicas y Técnicas |
| description |
The study of neutrinoless double beta decays of nuclei and hyperons requires the calculation of hadronic matrix elements of local four-quark operators that change the total charge by two units ΔQ = 2. Using a low energy effective Lagrangian that induces these transitions, we compute these hadronic matrix elements in the framework of the Massachussetts Institute of Technology bag model. As an illustrative example we evaluate the amplitude and transition rate of ε- → pe-e-, a decay process that violates lepton number by two units (ΔL = 2). The relevant matrix element is evaluated without assuming the usual factorization approximation of the four-quark operators and the results obtained in both approaches are compared. |
| publishDate |
2013 |
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2013-02-20 |
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info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Articulo http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
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article |
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publishedVersion |
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http://sedici.unlp.edu.ar/handle/10915/143430 |
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eng |
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eng |
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