Not-that-heavy Majorana neutrino signals at the LHC

Autores
Duarte, Deborah Lucia; Sampayo, Oscar Alfredo
Año de publicación
2017
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We revisit the possibility of Majorana neutrinos production at the Large Hadron Collider (LHC)by studying the pp → l i + l j + + 2 jets (l j ≡ e, μ) process which, due to leptonic number violation,is a clear signature for intermediate Majorana neutrino contributions. The interactions betweenMajorana neutrinos and the Standard Model particles are obtained from an effective Lagrangianapproach. Majorana neutrinos with masses of a few GeV are long-lived neutral particles, and wetake advantage of its measurable decay length: in the same-sign dilepton channel, we exploit thisfact imposing cuts that reject the SM background, and analyze the distribution corresponding tothe angle between the final leptons, using a forward-backward like asymmetry to study the effectsof the different gauge invariant operators. We also study the pp → l i + νγ process, which is dominantfor low m N masses if tensorial one-loop generated new physics leading to a magnetic moment forthe heavy neutrinos is present. This channel provides a powerful signal that could be observed atthe LHC with the aid of non-pointing photons observables and cuts on the displacement betweenthe prompt lepton and the photon in the final state.
Fil: Duarte, Deborah Lucia. Instituto de F´ısica, Facultad de Ingenier´ıa, Universidad de la Rep´ublica Julio Herrera y Reissig 565,(11300) Montevideo, Uruguay; Uruguay
Fil: Sampayo, Oscar Alfredo. Instituto de Investigaciones F´ısicas de Mar del Plata (IFIMAR) CONICET, UNMDP Departamento de F´ısica, Universidad Nacional de Mar del Plata; Argentina
Materia
MAJORANA
COLLIDER
NEUTRINO
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:11336/66156
Acceder
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spelling Not-that-heavy Majorana neutrino signals at the LHCDuarte, Deborah LuciaSampayo, Oscar AlfredoMAJORANACOLLIDERNEUTRINOhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We revisit the possibility of Majorana neutrinos production at the Large Hadron Collider (LHC)by studying the pp → l i + l j + + 2 jets (l j ≡ e, μ) process which, due to leptonic number violation,is a clear signature for intermediate Majorana neutrino contributions. The interactions betweenMajorana neutrinos and the Standard Model particles are obtained from an effective Lagrangianapproach. Majorana neutrinos with masses of a few GeV are long-lived neutral particles, and wetake advantage of its measurable decay length: in the same-sign dilepton channel, we exploit thisfact imposing cuts that reject the SM background, and analyze the distribution corresponding tothe angle between the final leptons, using a forward-backward like asymmetry to study the effectsof the different gauge invariant operators. We also study the pp → l i + νγ process, which is dominantfor low m N masses if tensorial one-loop generated new physics leading to a magnetic moment forthe heavy neutrinos is present. This channel provides a powerful signal that could be observed atthe LHC with the aid of non-pointing photons observables and cuts on the displacement betweenthe prompt lepton and the photon in the final state.Fil: Duarte, Deborah Lucia. Instituto de F´ısica, Facultad de Ingenier´ıa, Universidad de la Rep´ublica Julio Herrera y Reissig 565,(11300) Montevideo, Uruguay; UruguayFil: Sampayo, Oscar Alfredo. Instituto de Investigaciones F´ısicas de Mar del Plata (IFIMAR) CONICET, UNMDP Departamento de F´ısica, Universidad Nacional de Mar del Plata; ArgentinaIOP Publishing2017-12-22info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/66156Duarte, Deborah Lucia; Sampayo, Oscar Alfredo; Not-that-heavy Majorana neutrino signals at the LHC; IOP Publishing; Journal Of Physics G-nuclear And Particle Physics; 45; 2; 22-12-2017; 0250010954-3899CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1088/1361-6471/aa99f5info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.1088/1361-6471/aa99f5/metainfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:11:11Zoai:ri.conicet.gov.ar:11336/66156instacron: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 10:11:12.182CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Not-that-heavy Majorana neutrino signals at the LHC
title Not-that-heavy Majorana neutrino signals at the LHC
spellingShingle Not-that-heavy Majorana neutrino signals at the LHC
Duarte, Deborah Lucia
MAJORANA
COLLIDER
NEUTRINO
title_short Not-that-heavy Majorana neutrino signals at the LHC
title_full Not-that-heavy Majorana neutrino signals at the LHC
title_fullStr Not-that-heavy Majorana neutrino signals at the LHC
title_full_unstemmed Not-that-heavy Majorana neutrino signals at the LHC
title_sort Not-that-heavy Majorana neutrino signals at the LHC
dc.creator.none.fl_str_mv Duarte, Deborah Lucia
Sampayo, Oscar Alfredo
author Duarte, Deborah Lucia
author_facet Duarte, Deborah Lucia
Sampayo, Oscar Alfredo
author_role author
author2 Sampayo, Oscar Alfredo
author2_role author
dc.subject.none.fl_str_mv MAJORANA
COLLIDER
NEUTRINO
topic MAJORANA
COLLIDER
NEUTRINO
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 revisit the possibility of Majorana neutrinos production at the Large Hadron Collider (LHC)by studying the pp → l i + l j + + 2 jets (l j ≡ e, μ) process which, due to leptonic number violation,is a clear signature for intermediate Majorana neutrino contributions. The interactions betweenMajorana neutrinos and the Standard Model particles are obtained from an effective Lagrangianapproach. Majorana neutrinos with masses of a few GeV are long-lived neutral particles, and wetake advantage of its measurable decay length: in the same-sign dilepton channel, we exploit thisfact imposing cuts that reject the SM background, and analyze the distribution corresponding tothe angle between the final leptons, using a forward-backward like asymmetry to study the effectsof the different gauge invariant operators. We also study the pp → l i + νγ process, which is dominantfor low m N masses if tensorial one-loop generated new physics leading to a magnetic moment forthe heavy neutrinos is present. This channel provides a powerful signal that could be observed atthe LHC with the aid of non-pointing photons observables and cuts on the displacement betweenthe prompt lepton and the photon in the final state.
Fil: Duarte, Deborah Lucia. Instituto de F´ısica, Facultad de Ingenier´ıa, Universidad de la Rep´ublica Julio Herrera y Reissig 565,(11300) Montevideo, Uruguay; Uruguay
Fil: Sampayo, Oscar Alfredo. Instituto de Investigaciones F´ısicas de Mar del Plata (IFIMAR) CONICET, UNMDP Departamento de F´ısica, Universidad Nacional de Mar del Plata; Argentina
description We revisit the possibility of Majorana neutrinos production at the Large Hadron Collider (LHC)by studying the pp → l i + l j + + 2 jets (l j ≡ e, μ) process which, due to leptonic number violation,is a clear signature for intermediate Majorana neutrino contributions. The interactions betweenMajorana neutrinos and the Standard Model particles are obtained from an effective Lagrangianapproach. Majorana neutrinos with masses of a few GeV are long-lived neutral particles, and wetake advantage of its measurable decay length: in the same-sign dilepton channel, we exploit thisfact imposing cuts that reject the SM background, and analyze the distribution corresponding tothe angle between the final leptons, using a forward-backward like asymmetry to study the effectsof the different gauge invariant operators. We also study the pp → l i + νγ process, which is dominantfor low m N masses if tensorial one-loop generated new physics leading to a magnetic moment forthe heavy neutrinos is present. This channel provides a powerful signal that could be observed atthe LHC with the aid of non-pointing photons observables and cuts on the displacement betweenthe prompt lepton and the photon in the final state.
publishDate 2017
dc.date.none.fl_str_mv 2017-12-22
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/11336/66156
Duarte, Deborah Lucia; Sampayo, Oscar Alfredo; Not-that-heavy Majorana neutrino signals at the LHC; IOP Publishing; Journal Of Physics G-nuclear And Particle Physics; 45; 2; 22-12-2017; 025001
0954-3899
CONICET Digital
CONICET
url http://hdl.handle.net/11336/66156
identifier_str_mv Duarte, Deborah Lucia; Sampayo, Oscar Alfredo; Not-that-heavy Majorana neutrino signals at the LHC; IOP Publishing; Journal Of Physics G-nuclear And Particle Physics; 45; 2; 22-12-2017; 025001
0954-3899
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1088/1361-6471/aa99f5
info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.1088/1361-6471/aa99f5/meta
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 IOP Publishing
publisher.none.fl_str_mv IOP Publishing
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
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score 13.13397

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