Measurement of the Λ<SUP>0</SUP><SUB>b</SUB> lifetime and mass in the ATLAS experiment

Autores
Alonso, Francisco; Anduaga, Xabier Sebastián; Dova, María Teresa; Monticelli, Fernando Gabriel; Tripiana, Martín Fernando; The ATLAS Collaboration
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
A measurement of the Λ0b lifetime and mass in the decay channel Λ0b →J/ψ(μ+μ¯)Λ0(pπ¯) is presented. The analysis uses a signal sample of about 2200 Λ0b and Λ¯0b decays that are reconstructed in 4.9 fb-1 of ATLAS pp collision data collected in 2011 at the LHC center-of-mass energy of 7 TeV. A simultaneous mass and decay time maximum likelihood fit is used to extract the Λ0b lifetime and mass. They are measured to be τΛb=1.449±0.036(stat) ±0.017(syst) ps and mΛb=5619.7±0. 7(stat)±1.1(syst) MeV.
La lista completa de autores que integran el documento puede consultarse en el archivo.
Facultad de Ciencias Exactas
Instituto de Física La Plata
Materia
Ciencias Exactas
Física
Collisions
Proton–proton collisions
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by/3.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/85372
Acceder
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oai_identifier_str oai:sedici.unlp.edu.ar:10915/85372
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Measurement of the Λ<SUP>0</SUP><SUB>b</SUB> lifetime and mass in the ATLAS experimentAlonso, FranciscoAnduaga, Xabier SebastiánDova, María TeresaMonticelli, Fernando GabrielTripiana, Martín FernandoThe ATLAS CollaborationCiencias ExactasFísicaCollisionsProton–proton collisionsA measurement of the Λ<SUP>0</SUP><SUB>b</SUB> lifetime and mass in the decay channel Λ<SUP>0</SUP><SUB>b</SUB> →J/ψ(μ<SUP>+</SUP>μ¯)Λ<SUP>0</SUP>(pπ¯) is presented. The analysis uses a signal sample of about 2200 Λ<SUP>0</SUP><SUB>b</SUB> and Λ¯<SUP>0</SUP><SUB>b</SUB> decays that are reconstructed in 4.9 fb<SUP>-1</SUP> of ATLAS pp collision data collected in 2011 at the LHC center-of-mass energy of 7 TeV. A simultaneous mass and decay time maximum likelihood fit is used to extract the Λ<SUP>0</SUP><SUB>b</SUB> lifetime and mass. They are measured to be τ<SUB>Λ<sub>b</sub></SUB>=1.449±0.036(stat) ±0.017(syst) ps and m<SUB>Λ<sub>b</sub></SUB>=5619.7±0. 7(stat)±1.1(syst) MeV.La lista completa de autores que integran el documento puede consultarse en el archivo.Facultad de Ciencias ExactasInstituto de Física La Plata2013info: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/10915/85372enginfo:eu-repo/semantics/altIdentifier/issn/1550-7998info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevD.87.032002info: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:UNLP2025-09-29T11:16:34Zoai:sedici.unlp.edu.ar:10915/85372Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:16:34.796SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Measurement of the Λ<SUP>0</SUP><SUB>b</SUB> lifetime and mass in the ATLAS experiment
title Measurement of the Λ<SUP>0</SUP><SUB>b</SUB> lifetime and mass in the ATLAS experiment
spellingShingle Measurement of the Λ<SUP>0</SUP><SUB>b</SUB> lifetime and mass in the ATLAS experiment
Alonso, Francisco
Ciencias Exactas
Física
Collisions
Proton–proton collisions
title_short Measurement of the Λ<SUP>0</SUP><SUB>b</SUB> lifetime and mass in the ATLAS experiment
title_full Measurement of the Λ<SUP>0</SUP><SUB>b</SUB> lifetime and mass in the ATLAS experiment
title_fullStr Measurement of the Λ<SUP>0</SUP><SUB>b</SUB> lifetime and mass in the ATLAS experiment
title_full_unstemmed Measurement of the Λ<SUP>0</SUP><SUB>b</SUB> lifetime and mass in the ATLAS experiment
title_sort Measurement of the Λ<SUP>0</SUP><SUB>b</SUB> lifetime and mass in the ATLAS experiment
dc.creator.none.fl_str_mv Alonso, Francisco
Anduaga, Xabier Sebastián
Dova, María Teresa
Monticelli, Fernando Gabriel
Tripiana, Martín Fernando
The ATLAS Collaboration
author Alonso, Francisco
author_facet Alonso, Francisco
Anduaga, Xabier Sebastián
Dova, María Teresa
Monticelli, Fernando Gabriel
Tripiana, Martín Fernando
The ATLAS Collaboration
author_role author
author2 Anduaga, Xabier Sebastián
Dova, María Teresa
Monticelli, Fernando Gabriel
Tripiana, Martín Fernando
The ATLAS Collaboration
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Ciencias Exactas
Física
Collisions
Proton–proton collisions
topic Ciencias Exactas
Física
Collisions
Proton–proton collisions
dc.description.none.fl_txt_mv A measurement of the Λ<SUP>0</SUP><SUB>b</SUB> lifetime and mass in the decay channel Λ<SUP>0</SUP><SUB>b</SUB> →J/ψ(μ<SUP>+</SUP>μ¯)Λ<SUP>0</SUP>(pπ¯) is presented. The analysis uses a signal sample of about 2200 Λ<SUP>0</SUP><SUB>b</SUB> and Λ¯<SUP>0</SUP><SUB>b</SUB> decays that are reconstructed in 4.9 fb<SUP>-1</SUP> of ATLAS pp collision data collected in 2011 at the LHC center-of-mass energy of 7 TeV. A simultaneous mass and decay time maximum likelihood fit is used to extract the Λ<SUP>0</SUP><SUB>b</SUB> lifetime and mass. They are measured to be τ<SUB>Λ<sub>b</sub></SUB>=1.449±0.036(stat) ±0.017(syst) ps and m<SUB>Λ<sub>b</sub></SUB>=5619.7±0. 7(stat)±1.1(syst) MeV.
La lista completa de autores que integran el documento puede consultarse en el archivo.
Facultad de Ciencias Exactas
Instituto de Física La Plata
description A measurement of the Λ<SUP>0</SUP><SUB>b</SUB> lifetime and mass in the decay channel Λ<SUP>0</SUP><SUB>b</SUB> →J/ψ(μ<SUP>+</SUP>μ¯)Λ<SUP>0</SUP>(pπ¯) is presented. The analysis uses a signal sample of about 2200 Λ<SUP>0</SUP><SUB>b</SUB> and Λ¯<SUP>0</SUP><SUB>b</SUB> decays that are reconstructed in 4.9 fb<SUP>-1</SUP> of ATLAS pp collision data collected in 2011 at the LHC center-of-mass energy of 7 TeV. A simultaneous mass and decay time maximum likelihood fit is used to extract the Λ<SUP>0</SUP><SUB>b</SUB> lifetime and mass. They are measured to be τ<SUB>Λ<sub>b</sub></SUB>=1.449±0.036(stat) ±0.017(syst) ps and m<SUB>Λ<sub>b</sub></SUB>=5619.7±0. 7(stat)±1.1(syst) MeV.
publishDate 2013
dc.date.none.fl_str_mv 2013
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
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/85372
url http://sedici.unlp.edu.ar/handle/10915/85372
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/1550-7998
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevD.87.032002
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/3.0/
Creative Commons Attribution 3.0 Unported (CC BY 3.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/3.0/
Creative Commons Attribution 3.0 Unported (CC BY 3.0)
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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score 13.070432

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