Measurement of top quark polarization in top-antitop events from proton-proton collisions at √s = 7 TeV using 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
- 2013
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- This Letter presents measurements of the polarization of the top quark in top-antitop quark pair events, using 4:7 fb-1 of proton-proton collision data recorded with the ATLAS detector at the Large Hadron Collider at √s = 7 TeV. Final states containing one or two isolated leptons (electrons or muons) and jets are considered. Two measurements of αℓP, the product of the leptonic spin-analyzing power and the top quark polarization, are performed assuming that the polarization is introduced by either a CP conserving or a maximally CP violating production process. The measurements obtained, αℓPCPC=–0.035 ± 0.014(stat) ± 0.037(syst) and αℓPCPV= 0.020 ± 0.016(stat)+0.013 -0.017(syst), are in good agreement with the standard model prediction of negligible top quark polarization.
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
Proton-Proton Collisions
ATLAS Detector - 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:10915/85423
Ver los metadatos del registro completo
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Measurement of top quark polarization in top-antitop events from proton-proton collisions at √s = 7 TeV using the ATLAS detectorAlconada Verzini, María JosefinaAlonso, FranciscoAnduaga, Xabier SebastiánDova, María TeresaMonticelli, Fernando GabrielTripiana, Martín FernandoThe ATLAS CollaborationCiencias ExactasFísicaProton-Proton CollisionsATLAS DetectorThis Letter presents measurements of the polarization of the top quark in top-antitop quark pair events, using 4:7 fb<SUP>-1</SUP> of proton-proton collision data recorded with the ATLAS detector at the Large Hadron Collider at √s = 7 TeV. Final states containing one or two isolated leptons (electrons or muons) and jets are considered. Two measurements of α<SUB>ℓ</SUB>P, the product of the leptonic spin-analyzing power and the top quark polarization, are performed assuming that the polarization is introduced by either a CP conserving or a maximally CP violating production process. The measurements obtained, α<SUB>ℓ</SUB>P<SUB>CPC</SUB>=–0.035 ± 0.014(stat) ± 0.037(syst) and α<SUB>ℓ</SUB>P<SUB>CPV</SUB>= 0.020 ± 0.016(stat)<SUP>+0.013</SUP> <SUB>-0.017</SUB>(syst), are in good agreement with the standard model prediction of negligible top quark polarization.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/10915/85423enginfo:eu-repo/semantics/altIdentifier/issn/0031-9007info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevLett.111.232002info: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:UNLP2025-10-15T11:08:22Zoai:sedici.unlp.edu.ar:10915/85423Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-15 11:08:22.618SEDICI (UNLP) - Universidad Nacional de La Platafalse |
| dc.title.none.fl_str_mv |
Measurement of top quark polarization in top-antitop events from proton-proton collisions at √s = 7 TeV using the ATLAS detector |
| title |
Measurement of top quark polarization in top-antitop events from proton-proton collisions at √s = 7 TeV using the ATLAS detector |
| spellingShingle |
Measurement of top quark polarization in top-antitop events from proton-proton collisions at √s = 7 TeV using the ATLAS detector Alconada Verzini, María Josefina Ciencias Exactas Física Proton-Proton Collisions ATLAS Detector |
| title_short |
Measurement of top quark polarization in top-antitop events from proton-proton collisions at √s = 7 TeV using the ATLAS detector |
| title_full |
Measurement of top quark polarization in top-antitop events from proton-proton collisions at √s = 7 TeV using the ATLAS detector |
| title_fullStr |
Measurement of top quark polarization in top-antitop events from proton-proton collisions at √s = 7 TeV using the ATLAS detector |
| title_full_unstemmed |
Measurement of top quark polarization in top-antitop events from proton-proton collisions at √s = 7 TeV using the ATLAS detector |
| title_sort |
Measurement of top quark polarization in top-antitop events from proton-proton collisions at √s = 7 TeV using 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 |
Ciencias Exactas Física Proton-Proton Collisions ATLAS Detector |
| topic |
Ciencias Exactas Física Proton-Proton Collisions ATLAS Detector |
| dc.description.none.fl_txt_mv |
This Letter presents measurements of the polarization of the top quark in top-antitop quark pair events, using 4:7 fb<SUP>-1</SUP> of proton-proton collision data recorded with the ATLAS detector at the Large Hadron Collider at √s = 7 TeV. Final states containing one or two isolated leptons (electrons or muons) and jets are considered. Two measurements of α<SUB>ℓ</SUB>P, the product of the leptonic spin-analyzing power and the top quark polarization, are performed assuming that the polarization is introduced by either a CP conserving or a maximally CP violating production process. The measurements obtained, α<SUB>ℓ</SUB>P<SUB>CPC</SUB>=–0.035 ± 0.014(stat) ± 0.037(syst) and α<SUB>ℓ</SUB>P<SUB>CPV</SUB>= 0.020 ± 0.016(stat)<SUP>+0.013</SUP> <SUB>-0.017</SUB>(syst), are in good agreement with the standard model prediction of negligible top quark polarization. La lista completa de autores que integran el documento puede consultarse en el archivo. Facultad de Ciencias Exactas Instituto de Física La Plata |
| description |
This Letter presents measurements of the polarization of the top quark in top-antitop quark pair events, using 4:7 fb<SUP>-1</SUP> of proton-proton collision data recorded with the ATLAS detector at the Large Hadron Collider at √s = 7 TeV. Final states containing one or two isolated leptons (electrons or muons) and jets are considered. Two measurements of α<SUB>ℓ</SUB>P, the product of the leptonic spin-analyzing power and the top quark polarization, are performed assuming that the polarization is introduced by either a CP conserving or a maximally CP violating production process. The measurements obtained, α<SUB>ℓ</SUB>P<SUB>CPC</SUB>=–0.035 ± 0.014(stat) ± 0.037(syst) and α<SUB>ℓ</SUB>P<SUB>CPV</SUB>= 0.020 ± 0.016(stat)<SUP>+0.013</SUP> <SUB>-0.017</SUB>(syst), are in good agreement with the standard model prediction of negligible top quark polarization. |
| publishDate |
2013 |
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2013 |
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