Measurement of the parity-violating asymmetry parameter αb and the helicity amplitudes for the decay Λ<sup>0</sup>b →j /ψ Λ<sup>0</sup> with the ATLAS detector
- Autores
- Alconada Verzini, María Josefina; Alonso, Francisco; Anduaga, Xabier Sebastián; Dova, María Teresa; Monticelli, Fernando Gabriel; Tripiana, Martín Fernando; The ATLAS Collaboration
- Año de publicación
- 2014
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- A measurement of the parity-violating decay asymmetry parameter, αb, and the helicity amplitudes for the decay Λ0b→J/ψ(μ+μ-)Λ0(pπ-) is reported. The analysis is based on 1400 Λ0b and Λ0¯b baryons selected in 4.6 fb-1 of proton-proton collision data with a center-of-mass energy of 7 TeV recorded by the ATLAS experiment at the LHC. By combining the Λb0 and Λ0¯b samples under the assumption of CP conservation, the value of αb is measured to be 0.30±0.16(stat)±0.06(syst). This measurement provides a test of theoretical models based on perturbative QCD or heavy-quark effective theory.
La lista completa de autores que integran el documento puede consultarse en el archivo.
Instituto de Física La Plata - Materia
-
Física
Ciencias Exactas
Parity-violating asymmetry
ATLAS detector
Quantum chromodynamics - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by/3.0/
- Repositorio
.jpg)
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/85215
Ver los metadatos del registro completo
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Measurement of the parity-violating asymmetry parameter αb and the helicity amplitudes for the decay Λ<sup>0</sup>b →j /ψ Λ<sup>0</sup> with the ATLAS detectorAlconada Verzini, María JosefinaAlonso, FranciscoAnduaga, Xabier SebastiánDova, María TeresaMonticelli, Fernando GabrielTripiana, Martín FernandoThe ATLAS CollaborationFísicaCiencias ExactasParity-violating asymmetryATLAS detectorQuantum chromodynamicsA measurement of the parity-violating decay asymmetry parameter, αb, and the helicity amplitudes for the decay Λ<sup>0</sup>b→J/ψ(μ+μ-)Λ<sup>0</sup>(pπ-) is reported. The analysis is based on 1400 Λ<sup>0</sup>b and Λ<sup>0</sup>¯b baryons selected in 4.6 fb-1 of proton-proton collision data with a center-of-mass energy of 7 TeV recorded by the ATLAS experiment at the LHC. By combining the Λb0 and Λ<sup>0</sup>¯b samples under the assumption of CP conservation, the value of αb is measured to be 0.30±0.16(stat)±0.06(syst). This measurement provides a test of theoretical models based on perturbative QCD or heavy-quark effective theory.La lista completa de autores que integran el documento puede consultarse en el archivo.Instituto de Física La Plata2014-05-27info: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/10915/85215enginfo:eu-repo/semantics/altIdentifier/issn/1550-7998info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevD.89.092009info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/3.0/Creative Commons Attribution 3.0 Unported (CC BY 3.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:16:21Zoai:sedici.unlp.edu.ar:10915/85215Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:16:21.315SEDICI (UNLP) - Universidad Nacional de La Platafalse |
| dc.title.none.fl_str_mv |
Measurement of the parity-violating asymmetry parameter αb and the helicity amplitudes for the decay Λ<sup>0</sup>b →j /ψ Λ<sup>0</sup> with the ATLAS detector |
| title |
Measurement of the parity-violating asymmetry parameter αb and the helicity amplitudes for the decay Λ<sup>0</sup>b →j /ψ Λ<sup>0</sup> with the ATLAS detector |
| spellingShingle |
Measurement of the parity-violating asymmetry parameter αb and the helicity amplitudes for the decay Λ<sup>0</sup>b →j /ψ Λ<sup>0</sup> with the ATLAS detector Alconada Verzini, María Josefina Física Ciencias Exactas Parity-violating asymmetry ATLAS detector Quantum chromodynamics |
| title_short |
Measurement of the parity-violating asymmetry parameter αb and the helicity amplitudes for the decay Λ<sup>0</sup>b →j /ψ Λ<sup>0</sup> with the ATLAS detector |
| title_full |
Measurement of the parity-violating asymmetry parameter αb and the helicity amplitudes for the decay Λ<sup>0</sup>b →j /ψ Λ<sup>0</sup> with the ATLAS detector |
| title_fullStr |
Measurement of the parity-violating asymmetry parameter αb and the helicity amplitudes for the decay Λ<sup>0</sup>b →j /ψ Λ<sup>0</sup> with the ATLAS detector |
| title_full_unstemmed |
Measurement of the parity-violating asymmetry parameter αb and the helicity amplitudes for the decay Λ<sup>0</sup>b →j /ψ Λ<sup>0</sup> with the ATLAS detector |
| title_sort |
Measurement of the parity-violating asymmetry parameter αb and the helicity amplitudes for the decay Λ<sup>0</sup>b →j /ψ Λ<sup>0</sup> with the ATLAS detector |
| dc.creator.none.fl_str_mv |
Alconada Verzini, María Josefina Alonso, Francisco Anduaga, Xabier Sebastián Dova, María Teresa Monticelli, Fernando Gabriel Tripiana, Martín Fernando The ATLAS Collaboration |
| author |
Alconada Verzini, María Josefina |
| author_facet |
Alconada Verzini, María Josefina Alonso, Francisco Anduaga, Xabier Sebastián Dova, María Teresa Monticelli, Fernando Gabriel Tripiana, Martín Fernando The ATLAS Collaboration |
| author_role |
author |
| author2 |
Alonso, Francisco Anduaga, Xabier Sebastián Dova, María Teresa Monticelli, Fernando Gabriel Tripiana, Martín Fernando The ATLAS Collaboration |
| author2_role |
author author author author author author |
| dc.subject.none.fl_str_mv |
Física Ciencias Exactas Parity-violating asymmetry ATLAS detector Quantum chromodynamics |
| topic |
Física Ciencias Exactas Parity-violating asymmetry ATLAS detector Quantum chromodynamics |
| dc.description.none.fl_txt_mv |
A measurement of the parity-violating decay asymmetry parameter, αb, and the helicity amplitudes for the decay Λ<sup>0</sup>b→J/ψ(μ+μ-)Λ<sup>0</sup>(pπ-) is reported. The analysis is based on 1400 Λ<sup>0</sup>b and Λ<sup>0</sup>¯b baryons selected in 4.6 fb-1 of proton-proton collision data with a center-of-mass energy of 7 TeV recorded by the ATLAS experiment at the LHC. By combining the Λb0 and Λ<sup>0</sup>¯b samples under the assumption of CP conservation, the value of αb is measured to be 0.30±0.16(stat)±0.06(syst). This measurement provides a test of theoretical models based on perturbative QCD or heavy-quark effective theory. La lista completa de autores que integran el documento puede consultarse en el archivo. Instituto de Física La Plata |
| description |
A measurement of the parity-violating decay asymmetry parameter, αb, and the helicity amplitudes for the decay Λ<sup>0</sup>b→J/ψ(μ+μ-)Λ<sup>0</sup>(pπ-) is reported. The analysis is based on 1400 Λ<sup>0</sup>b and Λ<sup>0</sup>¯b baryons selected in 4.6 fb-1 of proton-proton collision data with a center-of-mass energy of 7 TeV recorded by the ATLAS experiment at the LHC. By combining the Λb0 and Λ<sup>0</sup>¯b samples under the assumption of CP conservation, the value of αb is measured to be 0.30±0.16(stat)±0.06(syst). This measurement provides a test of theoretical models based on perturbative QCD or heavy-quark effective theory. |
| publishDate |
2014 |
| dc.date.none.fl_str_mv |
2014-05-27 |
| dc.type.none.fl_str_mv |
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/10915/85215 |
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eng |
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eng |
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info:eu-repo/semantics/altIdentifier/issn/1550-7998 info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevD.89.092009 |
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openAccess |
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