Looking for the left sneutrino LSP with displaced-vertex searches

Autores
Lara, Iñaki; Lopez, Daniel Elbio; Muñoz, Carlos; Nagata, Natsumi; Otono, Hidetoshi; Ruiz De Austri, Roberto
Año de publicación
2018
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We analyze a displaced dilepton signal expected at the LHC for a tau left sneutrino as the lightest supersymmetric particle with a mass in the range 45-100 GeV. The sneutrinos are pair produced via a virtual W, Z or γ in the s channel and, given the large value of the tau Yukawa coupling, their decays into two dileptons or a dilepton plus missing transverse energy from neutrinos can be significant. The discussion is carried out in the framework of the μνSSM, where the presence of R-parity violating couplings involving right-handed neutrinos solves the μ problem and can reproduce the neutrino data. To probe the tau left sneutrinos we compare the predictions of this scenario with the ATLAS search for long-lived particles using displaced lepton pairs in pp collisions at s=8 TeV, allowing us to constrain the parameter space of the model. We also consider an optimization of the trigger requirements used in existing displaced-vertex searches by means of a high level trigger that exploits tracker information. This optimization is generically useful for a light metastable particle decaying into soft charged leptons. The constraints on the sneutrino turn out to be more stringent. We finally discuss the prospects for the 13 TeV LHC searches as well as further potential optimizations.
Fil: Lara, Iñaki. Universidad Autónoma de Madrid; España
Fil: Lopez, Daniel Elbio. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina. Universidad Autónoma de Madrid; España
Fil: Muñoz, Carlos. Universidad Autónoma de Madrid; España
Fil: Nagata, Natsumi. University of Tokyo; Japón
Fil: Otono, Hidetoshi. Kyushu University; Japón
Fil: Ruiz De Austri, Roberto. Consejo Superior de Investigaciones Científicas; España
Materia
Supersymmetry Phenomenology
Supersymetric Standard Model
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/182467
Acceder
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network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Looking for the left sneutrino LSP with displaced-vertex searchesLara, IñakiLopez, Daniel ElbioMuñoz, CarlosNagata, NatsumiOtono, HidetoshiRuiz De Austri, RobertoSupersymmetry PhenomenologySupersymetric Standard Modelhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We analyze a displaced dilepton signal expected at the LHC for a tau left sneutrino as the lightest supersymmetric particle with a mass in the range 45-100 GeV. The sneutrinos are pair produced via a virtual W, Z or γ in the s channel and, given the large value of the tau Yukawa coupling, their decays into two dileptons or a dilepton plus missing transverse energy from neutrinos can be significant. The discussion is carried out in the framework of the μνSSM, where the presence of R-parity violating couplings involving right-handed neutrinos solves the μ problem and can reproduce the neutrino data. To probe the tau left sneutrinos we compare the predictions of this scenario with the ATLAS search for long-lived particles using displaced lepton pairs in pp collisions at s=8 TeV, allowing us to constrain the parameter space of the model. We also consider an optimization of the trigger requirements used in existing displaced-vertex searches by means of a high level trigger that exploits tracker information. This optimization is generically useful for a light metastable particle decaying into soft charged leptons. The constraints on the sneutrino turn out to be more stringent. We finally discuss the prospects for the 13 TeV LHC searches as well as further potential optimizations.Fil: Lara, Iñaki. Universidad Autónoma de Madrid; EspañaFil: Lopez, Daniel Elbio. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina. Universidad Autónoma de Madrid; EspañaFil: Muñoz, Carlos. Universidad Autónoma de Madrid; EspañaFil: Nagata, Natsumi. University of Tokyo; JapónFil: Otono, Hidetoshi. Kyushu University; JapónFil: Ruiz De Austri, Roberto. Consejo Superior de Investigaciones Científicas; EspañaAmerican Physical Society2018-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/182467Lara, Iñaki; Lopez, Daniel Elbio; Muñoz, Carlos; Nagata, Natsumi; Otono, Hidetoshi; et al.; Looking for the left sneutrino LSP with displaced-vertex searches; American Physical Society; Physical Review D: Particles, Fields, Gravitation and Cosmology; 98; 7; 10-2018; 1-171550-79982470-0029CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://journals.aps.org/prd/abstract/10.1103/PhysRevD.98.075004info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevD.98.075004info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:53:21Zoai:ri.conicet.gov.ar:11336/182467instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 09:53:21.285CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Looking for the left sneutrino LSP with displaced-vertex searches
title Looking for the left sneutrino LSP with displaced-vertex searches
spellingShingle Looking for the left sneutrino LSP with displaced-vertex searches
Lara, Iñaki
Supersymmetry Phenomenology
Supersymetric Standard Model
title_short Looking for the left sneutrino LSP with displaced-vertex searches
title_full Looking for the left sneutrino LSP with displaced-vertex searches
title_fullStr Looking for the left sneutrino LSP with displaced-vertex searches
title_full_unstemmed Looking for the left sneutrino LSP with displaced-vertex searches
title_sort Looking for the left sneutrino LSP with displaced-vertex searches
dc.creator.none.fl_str_mv Lara, Iñaki
Lopez, Daniel Elbio
Muñoz, Carlos
Nagata, Natsumi
Otono, Hidetoshi
Ruiz De Austri, Roberto
author Lara, Iñaki
author_facet Lara, Iñaki
Lopez, Daniel Elbio
Muñoz, Carlos
Nagata, Natsumi
Otono, Hidetoshi
Ruiz De Austri, Roberto
author_role author
author2 Lopez, Daniel Elbio
Muñoz, Carlos
Nagata, Natsumi
Otono, Hidetoshi
Ruiz De Austri, Roberto
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Supersymmetry Phenomenology
Supersymetric Standard Model
topic Supersymmetry Phenomenology
Supersymetric Standard Model
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We analyze a displaced dilepton signal expected at the LHC for a tau left sneutrino as the lightest supersymmetric particle with a mass in the range 45-100 GeV. The sneutrinos are pair produced via a virtual W, Z or γ in the s channel and, given the large value of the tau Yukawa coupling, their decays into two dileptons or a dilepton plus missing transverse energy from neutrinos can be significant. The discussion is carried out in the framework of the μνSSM, where the presence of R-parity violating couplings involving right-handed neutrinos solves the μ problem and can reproduce the neutrino data. To probe the tau left sneutrinos we compare the predictions of this scenario with the ATLAS search for long-lived particles using displaced lepton pairs in pp collisions at s=8 TeV, allowing us to constrain the parameter space of the model. We also consider an optimization of the trigger requirements used in existing displaced-vertex searches by means of a high level trigger that exploits tracker information. This optimization is generically useful for a light metastable particle decaying into soft charged leptons. The constraints on the sneutrino turn out to be more stringent. We finally discuss the prospects for the 13 TeV LHC searches as well as further potential optimizations.
Fil: Lara, Iñaki. Universidad Autónoma de Madrid; España
Fil: Lopez, Daniel Elbio. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina. Universidad Autónoma de Madrid; España
Fil: Muñoz, Carlos. Universidad Autónoma de Madrid; España
Fil: Nagata, Natsumi. University of Tokyo; Japón
Fil: Otono, Hidetoshi. Kyushu University; Japón
Fil: Ruiz De Austri, Roberto. Consejo Superior de Investigaciones Científicas; España
description We analyze a displaced dilepton signal expected at the LHC for a tau left sneutrino as the lightest supersymmetric particle with a mass in the range 45-100 GeV. The sneutrinos are pair produced via a virtual W, Z or γ in the s channel and, given the large value of the tau Yukawa coupling, their decays into two dileptons or a dilepton plus missing transverse energy from neutrinos can be significant. The discussion is carried out in the framework of the μνSSM, where the presence of R-parity violating couplings involving right-handed neutrinos solves the μ problem and can reproduce the neutrino data. To probe the tau left sneutrinos we compare the predictions of this scenario with the ATLAS search for long-lived particles using displaced lepton pairs in pp collisions at s=8 TeV, allowing us to constrain the parameter space of the model. We also consider an optimization of the trigger requirements used in existing displaced-vertex searches by means of a high level trigger that exploits tracker information. This optimization is generically useful for a light metastable particle decaying into soft charged leptons. The constraints on the sneutrino turn out to be more stringent. We finally discuss the prospects for the 13 TeV LHC searches as well as further potential optimizations.
publishDate 2018
dc.date.none.fl_str_mv 2018-10
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
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://hdl.handle.net/11336/182467
Lara, Iñaki; Lopez, Daniel Elbio; Muñoz, Carlos; Nagata, Natsumi; Otono, Hidetoshi; et al.; Looking for the left sneutrino LSP with displaced-vertex searches; American Physical Society; Physical Review D: Particles, Fields, Gravitation and Cosmology; 98; 7; 10-2018; 1-17
1550-7998
2470-0029
CONICET Digital
CONICET
url http://hdl.handle.net/11336/182467
identifier_str_mv Lara, Iñaki; Lopez, Daniel Elbio; Muñoz, Carlos; Nagata, Natsumi; Otono, Hidetoshi; et al.; Looking for the left sneutrino LSP with displaced-vertex searches; American Physical Society; Physical Review D: Particles, Fields, Gravitation and Cosmology; 98; 7; 10-2018; 1-17
1550-7998
2470-0029
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://journals.aps.org/prd/abstract/10.1103/PhysRevD.98.075004
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevD.98.075004
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv American Physical Society
publisher.none.fl_str_mv American Physical Society
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1842269218130624512
score 13.13397

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