Search for displaced leptons in √s=13 TeV and 13.6 TeV pp collisions with the ATLAS detector

Autores
Alonso, Francisco; Beaucamp, Jean Yves; Dova, María Teresa; Monticelli, Fernando Gabriel; Sili, Francisco; The ATLAS Collaboration
Año de publicación
2025
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
A search for leptons displaced from the primary vertex is performed with the ATLAS detector at the Large Hadron Collider. The search includes the full proton-proton collision dataset collected during Run 2 at √s=13 TeV and a partial dataset collected during Run 3 in 2022–2023 at √s=13.6 TeV, corresponding to integrated luminosities of 140 fb⁻¹. and 56.3 fb⁻¹, respectively. Final states with displaced electrons or muons are considered, and novel triggers introduced in Run 3 are employed that use large impact parameter tracking to reconstruct displaced tracks with low momentum. In addition, photon reconstruction and multivariate techniques are employed to broaden the sensitivity to channels with large background rates or highly displaced electrons, respectively. The results are consistent with the Standard Model background expectations and are used to set model-independent limits on the production of displaced electrons and muons. The analysis is also interpreted in the context of a gauge-mediated supersymmetry breaking model with pair-produced long-lived sleptons and a dark sector model with pair-produced chargino-like states. The results include 95% confidence level exclusions of selectrons with lifetimes from 4 ps to 60 ns and a mass of 150 GeV, and exclusions of selectrons, smuons, and staus with a lifetime of 0.3 ns for masses up to 740, 830, and 440 GeV, respectively. Dark charginos with masses up to 380 GeV are excluded for a mass difference with the neutral state of 40 GeV, and mass differences down to 17 GeV are excluded for dark charginos with a 100 GeV mass.
La lista completa de autores que integran el documento puede consultarse en el archivo.
Instituto de Física La Plata
Materia
Física
Displaced leptons
Long-lived particles
Supersymmetry searches
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/196039
Acceder
id SEDICI_d9e6efe75d1646dee439f178822fc08c
oai_identifier_str oai:sedici.unlp.edu.ar:10915/196039
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Search for displaced leptons in √s=13 TeV and 13.6 TeV pp collisions with the ATLAS detectorAlonso, FranciscoBeaucamp, Jean YvesDova, María TeresaMonticelli, Fernando GabrielSili, FranciscoThe ATLAS CollaborationFísicaDisplaced leptonsLong-lived particlesSupersymmetry searchesA search for leptons displaced from the primary vertex is performed with the ATLAS detector at the Large Hadron Collider. The search includes the full proton-proton collision dataset collected during Run 2 at √s=13 TeV and a partial dataset collected during Run 3 in 2022–2023 at √s=13.6 TeV, corresponding to integrated luminosities of 140 fb⁻¹. and 56.3 fb⁻¹, respectively. Final states with displaced electrons or muons are considered, and novel triggers introduced in Run 3 are employed that use large impact parameter tracking to reconstruct displaced tracks with low momentum. In addition, photon reconstruction and multivariate techniques are employed to broaden the sensitivity to channels with large background rates or highly displaced electrons, respectively. The results are consistent with the Standard Model background expectations and are used to set model-independent limits on the production of displaced electrons and muons. The analysis is also interpreted in the context of a gauge-mediated supersymmetry breaking model with pair-produced long-lived sleptons and a dark sector model with pair-produced chargino-like states. The results include 95% confidence level exclusions of selectrons with lifetimes from 4 ps to 60 ns and a mass of 150 GeV, and exclusions of selectrons, smuons, and staus with a lifetime of 0.3 ns for masses up to 740, 830, and 440 GeV, respectively. Dark charginos with masses up to 380 GeV are excluded for a mass difference with the neutral state of 40 GeV, and mass differences down to 17 GeV are excluded for dark charginos with a 100 GeV mass.La lista completa de autores que integran el documento puede consultarse en el archivo.Instituto de Física La Plata2025info: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/10915/196039enginfo:eu-repo/semantics/altIdentifier/issn/2470-0010info:eu-repo/semantics/altIdentifier/doi/10.1103/w8hh-xf24info: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:UNLP2026-06-23T11:17:12Zoai:sedici.unlp.edu.ar:10915/196039Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292026-06-23 11:17:12.91SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Search for displaced leptons in √s=13 TeV and 13.6 TeV pp collisions with the ATLAS detector
title Search for displaced leptons in √s=13 TeV and 13.6 TeV pp collisions with the ATLAS detector
spellingShingle Search for displaced leptons in √s=13 TeV and 13.6 TeV pp collisions with the ATLAS detector
Alonso, Francisco
Física
Displaced leptons
Long-lived particles
Supersymmetry searches
title_short Search for displaced leptons in √s=13 TeV and 13.6 TeV pp collisions with the ATLAS detector
title_full Search for displaced leptons in √s=13 TeV and 13.6 TeV pp collisions with the ATLAS detector
title_fullStr Search for displaced leptons in √s=13 TeV and 13.6 TeV pp collisions with the ATLAS detector
title_full_unstemmed Search for displaced leptons in √s=13 TeV and 13.6 TeV pp collisions with the ATLAS detector
title_sort Search for displaced leptons in √s=13 TeV and 13.6 TeV pp collisions with the ATLAS detector
dc.creator.none.fl_str_mv Alonso, Francisco
Beaucamp, Jean Yves
Dova, María Teresa
Monticelli, Fernando Gabriel
Sili, Francisco
The ATLAS Collaboration
author Alonso, Francisco
author_facet Alonso, Francisco
Beaucamp, Jean Yves
Dova, María Teresa
Monticelli, Fernando Gabriel
Sili, Francisco
The ATLAS Collaboration
author_role author
author2 Beaucamp, Jean Yves
Dova, María Teresa
Monticelli, Fernando Gabriel
Sili, Francisco
The ATLAS Collaboration
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Física
Displaced leptons
Long-lived particles
Supersymmetry searches
topic Física
Displaced leptons
Long-lived particles
Supersymmetry searches
dc.description.none.fl_txt_mv A search for leptons displaced from the primary vertex is performed with the ATLAS detector at the Large Hadron Collider. The search includes the full proton-proton collision dataset collected during Run 2 at √s=13 TeV and a partial dataset collected during Run 3 in 2022–2023 at √s=13.6 TeV, corresponding to integrated luminosities of 140 fb⁻¹. and 56.3 fb⁻¹, respectively. Final states with displaced electrons or muons are considered, and novel triggers introduced in Run 3 are employed that use large impact parameter tracking to reconstruct displaced tracks with low momentum. In addition, photon reconstruction and multivariate techniques are employed to broaden the sensitivity to channels with large background rates or highly displaced electrons, respectively. The results are consistent with the Standard Model background expectations and are used to set model-independent limits on the production of displaced electrons and muons. The analysis is also interpreted in the context of a gauge-mediated supersymmetry breaking model with pair-produced long-lived sleptons and a dark sector model with pair-produced chargino-like states. The results include 95% confidence level exclusions of selectrons with lifetimes from 4 ps to 60 ns and a mass of 150 GeV, and exclusions of selectrons, smuons, and staus with a lifetime of 0.3 ns for masses up to 740, 830, and 440 GeV, respectively. Dark charginos with masses up to 380 GeV are excluded for a mass difference with the neutral state of 40 GeV, and mass differences down to 17 GeV are excluded for dark charginos with a 100 GeV mass.
La lista completa de autores que integran el documento puede consultarse en el archivo.
Instituto de Física La Plata
description A search for leptons displaced from the primary vertex is performed with the ATLAS detector at the Large Hadron Collider. The search includes the full proton-proton collision dataset collected during Run 2 at √s=13 TeV and a partial dataset collected during Run 3 in 2022–2023 at √s=13.6 TeV, corresponding to integrated luminosities of 140 fb⁻¹. and 56.3 fb⁻¹, respectively. Final states with displaced electrons or muons are considered, and novel triggers introduced in Run 3 are employed that use large impact parameter tracking to reconstruct displaced tracks with low momentum. In addition, photon reconstruction and multivariate techniques are employed to broaden the sensitivity to channels with large background rates or highly displaced electrons, respectively. The results are consistent with the Standard Model background expectations and are used to set model-independent limits on the production of displaced electrons and muons. The analysis is also interpreted in the context of a gauge-mediated supersymmetry breaking model with pair-produced long-lived sleptons and a dark sector model with pair-produced chargino-like states. The results include 95% confidence level exclusions of selectrons with lifetimes from 4 ps to 60 ns and a mass of 150 GeV, and exclusions of selectrons, smuons, and staus with a lifetime of 0.3 ns for masses up to 740, 830, and 440 GeV, respectively. Dark charginos with masses up to 380 GeV are excluded for a mass difference with the neutral state of 40 GeV, and mass differences down to 17 GeV are excluded for dark charginos with a 100 GeV mass.
publishDate 2025
dc.date.none.fl_str_mv 2025
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/10915/196039
url http://sedici.unlp.edu.ar/handle/10915/196039
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/2470-0010
info:eu-repo/semantics/altIdentifier/doi/10.1103/w8hh-xf24
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
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
_version_ 1868982613016838144
score 13.265058

Publicaciones similares