Search for lepton-flavor-violating decays of the Z boson into a τ lepton and a light lepton with the ATLAS detector
- Autores
- Alconada Verzini, María Josefina; Alonso, Francisco; Arduh, Francisco Anuar; Dova, María Teresa; Hoya, Joaquín; Monticelli, Fernando Gabriel; Wahlberg, Hernán Pablo; The ATLAS Collaboration
- Año de publicación
- 2018
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Direct searches for lepton flavor violation in decays of the Z boson with the ATLAS detector at the LHC are presented. Decays of the Z boson into an electron or muon and a hadronically decaying τ lepton are considered. The searches are based on a data sample of proton-proton collisions collected by the ATLAS detector in 2015 and 2016, corresponding to an integrated luminosity of 36.1 fb−1 at a center-of-mass energy of √s=13 TeV. No statistically significant excess of events above the expected background is observed, and upper limits on the branching ratios of lepton-flavor-violating decays are set at the 95% confidence level: (Z → eτ) < 5.8 × 10−5 and (Z → μτ) < 2.4 × 10−5. This is the first limit on (Z → eτ) with ATLAS data. The upper limit on (Z → μτ) is combined with a previous ATLAS result based on 20.3 fb−1 of proton-proton collision data at a center-of-mass energy of √s= 8 TeV and the combined upper limit at 95% confidence level is (Z → μτ) < 1.3 × 10−5.
La lista completa de autores que integran el documento puede consultarse en el archivo.
Instituto de Física La Plata - Materia
-
Física
Lepton flavor violation
Z boson decays
Branching ratio limit - 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:10915/195324
Ver los metadatos del registro completo
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Search for lepton-flavor-violating decays of the Z boson into a τ lepton and a light lepton with the ATLAS detectorAlconada Verzini, María JosefinaAlonso, FranciscoArduh, Francisco AnuarDova, María TeresaHoya, JoaquínMonticelli, Fernando GabrielWahlberg, Hernán PabloThe ATLAS CollaborationFísicaLepton flavor violationZ boson decaysBranching ratio limitDirect searches for lepton flavor violation in decays of the Z boson with the ATLAS detector at the LHC are presented. Decays of the Z boson into an electron or muon and a hadronically decaying τ lepton are considered. The searches are based on a data sample of proton-proton collisions collected by the ATLAS detector in 2015 and 2016, corresponding to an integrated luminosity of 36.1 fb−1 at a center-of-mass energy of √s=13 TeV. No statistically significant excess of events above the expected background is observed, and upper limits on the branching ratios of lepton-flavor-violating decays are set at the 95% confidence level: (Z → eτ) < 5.8 × 10−5 and (Z → μτ) < 2.4 × 10−5. This is the first limit on (Z → eτ) with ATLAS data. The upper limit on (Z → μτ) is combined with a previous ATLAS result based on 20.3 fb−1 of proton-proton collision data at a center-of-mass energy of √s= 8 TeV and the combined upper limit at 95% confidence level is (Z → μτ) < 1.3 × 10−5.La lista completa de autores que integran el documento puede consultarse en el archivo.Instituto de Física La Plata2018info: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/10915/195324enginfo:eu-repo/semantics/altIdentifier/issn/2470-0029info:eu-repo/semantics/altIdentifier/doi/10.1103/physrevd.98.092010info: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:UNLP2026-06-23T11:17:01Zoai:sedici.unlp.edu.ar:10915/195324Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292026-06-23 11:17:01.754SEDICI (UNLP) - Universidad Nacional de La Platafalse |
| dc.title.none.fl_str_mv |
Search for lepton-flavor-violating decays of the Z boson into a τ lepton and a light lepton with the ATLAS detector |
| title |
Search for lepton-flavor-violating decays of the Z boson into a τ lepton and a light lepton with the ATLAS detector |
| spellingShingle |
Search for lepton-flavor-violating decays of the Z boson into a τ lepton and a light lepton with the ATLAS detector Alconada Verzini, María Josefina Física Lepton flavor violation Z boson decays Branching ratio limit |
| title_short |
Search for lepton-flavor-violating decays of the Z boson into a τ lepton and a light lepton with the ATLAS detector |
| title_full |
Search for lepton-flavor-violating decays of the Z boson into a τ lepton and a light lepton with the ATLAS detector |
| title_fullStr |
Search for lepton-flavor-violating decays of the Z boson into a τ lepton and a light lepton with the ATLAS detector |
| title_full_unstemmed |
Search for lepton-flavor-violating decays of the Z boson into a τ lepton and a light lepton with the ATLAS detector |
| title_sort |
Search for lepton-flavor-violating decays of the Z boson into a τ lepton and a light lepton with the ATLAS detector |
| dc.creator.none.fl_str_mv |
Alconada Verzini, María Josefina Alonso, Francisco Arduh, Francisco Anuar Dova, María Teresa Hoya, Joaquín Monticelli, Fernando Gabriel Wahlberg, Hernán Pablo The ATLAS Collaboration |
| author |
Alconada Verzini, María Josefina |
| author_facet |
Alconada Verzini, María Josefina Alonso, Francisco Arduh, Francisco Anuar Dova, María Teresa Hoya, Joaquín Monticelli, Fernando Gabriel Wahlberg, Hernán Pablo The ATLAS Collaboration |
| author_role |
author |
| author2 |
Alonso, Francisco Arduh, Francisco Anuar Dova, María Teresa Hoya, Joaquín Monticelli, Fernando Gabriel Wahlberg, Hernán Pablo The ATLAS Collaboration |
| author2_role |
author author author author author author author |
| dc.subject.none.fl_str_mv |
Física Lepton flavor violation Z boson decays Branching ratio limit |
| topic |
Física Lepton flavor violation Z boson decays Branching ratio limit |
| dc.description.none.fl_txt_mv |
Direct searches for lepton flavor violation in decays of the Z boson with the ATLAS detector at the LHC are presented. Decays of the Z boson into an electron or muon and a hadronically decaying τ lepton are considered. The searches are based on a data sample of proton-proton collisions collected by the ATLAS detector in 2015 and 2016, corresponding to an integrated luminosity of 36.1 fb−1 at a center-of-mass energy of √s=13 TeV. No statistically significant excess of events above the expected background is observed, and upper limits on the branching ratios of lepton-flavor-violating decays are set at the 95% confidence level: (Z → eτ) < 5.8 × 10−5 and (Z → μτ) < 2.4 × 10−5. This is the first limit on (Z → eτ) with ATLAS data. The upper limit on (Z → μτ) is combined with a previous ATLAS result based on 20.3 fb−1 of proton-proton collision data at a center-of-mass energy of √s= 8 TeV and the combined upper limit at 95% confidence level is (Z → μτ) < 1.3 × 10−5. La lista completa de autores que integran el documento puede consultarse en el archivo. Instituto de Física La Plata |
| description |
Direct searches for lepton flavor violation in decays of the Z boson with the ATLAS detector at the LHC are presented. Decays of the Z boson into an electron or muon and a hadronically decaying τ lepton are considered. The searches are based on a data sample of proton-proton collisions collected by the ATLAS detector in 2015 and 2016, corresponding to an integrated luminosity of 36.1 fb−1 at a center-of-mass energy of √s=13 TeV. No statistically significant excess of events above the expected background is observed, and upper limits on the branching ratios of lepton-flavor-violating decays are set at the 95% confidence level: (Z → eτ) < 5.8 × 10−5 and (Z → μτ) < 2.4 × 10−5. This is the first limit on (Z → eτ) with ATLAS data. The upper limit on (Z → μτ) is combined with a previous ATLAS result based on 20.3 fb−1 of proton-proton collision data at a center-of-mass energy of √s= 8 TeV and the combined upper limit at 95% confidence level is (Z → μτ) < 1.3 × 10−5. |
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2018 |
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2018 |
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