tt¯bb¯ as a probe of new physics at the LHC

Autores
Alvarez, Ezequiel; Estevez, Mariel
Año de publicación
2017
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We study the ttbb final state at the LHC as a probe of new physics that couples mainly to the third generation of quarks. We analyze new physics simplified models with resonances of spin-0, -1 and -2. The sensitivity of the final states ttbb, tttt, bbbb and tt on each of these models is used to identify an important region in parameter space that is still not excluded and where ttbb is the most sensitive final state. We indicate possible experimental hints and discuss potential issues of observables that rely mainly on Monte Carlo predictions. A new observable is proposed that, at the price of requiring more statistics, reduces the impact of Monte Carlo predictions. We use preliminary 13 TeV results to give a raw estimate on the discovery reach and propose simple improvements on the observables.
Fil: Alvarez, Ezequiel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de San Martín. Escuela de Ciencia y Tecnología. Centro Internacional de Estudios Avanzados; Argentina
Fil: Estevez, Mariel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de San Martín. Escuela de Ciencia y Tecnología. Centro Internacional de Estudios Avanzados; Argentina
Materia
top
bottom
lhc
third generation
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/72563
Acceder
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network_name_str CONICET Digital (CONICET)
spelling tt¯bb¯ as a probe of new physics at the LHCAlvarez, EzequielEstevez, Marieltopbottomlhcthird generationhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We study the ttbb final state at the LHC as a probe of new physics that couples mainly to the third generation of quarks. We analyze new physics simplified models with resonances of spin-0, -1 and -2. The sensitivity of the final states ttbb, tttt, bbbb and tt on each of these models is used to identify an important region in parameter space that is still not excluded and where ttbb is the most sensitive final state. We indicate possible experimental hints and discuss potential issues of observables that rely mainly on Monte Carlo predictions. A new observable is proposed that, at the price of requiring more statistics, reduces the impact of Monte Carlo predictions. We use preliminary 13 TeV results to give a raw estimate on the discovery reach and propose simple improvements on the observables.Fil: Alvarez, Ezequiel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de San Martín. Escuela de Ciencia y Tecnología. Centro Internacional de Estudios Avanzados; ArgentinaFil: Estevez, Mariel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de San Martín. Escuela de Ciencia y Tecnología. Centro Internacional de Estudios Avanzados; ArgentinaAmerican Physical Society2017-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/72563Alvarez, Ezequiel; Estevez, Mariel; tt¯bb¯ as a probe of new physics at the LHC; American Physical Society; Physical Review D; 96; 3; 8-2017; 1-280556-28212470-0029CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://journals.aps.org/prd/abstract/10.1103/PhysRevD.96.035016info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevD.96.035016info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1701.04427info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T12:20:02Zoai:ri.conicet.gov.ar:11336/72563instacron: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:34982025-10-22 12:20:03.107CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv tt¯bb¯ as a probe of new physics at the LHC
title tt¯bb¯ as a probe of new physics at the LHC
spellingShingle tt¯bb¯ as a probe of new physics at the LHC
Alvarez, Ezequiel
top
bottom
lhc
third generation
title_short tt¯bb¯ as a probe of new physics at the LHC
title_full tt¯bb¯ as a probe of new physics at the LHC
title_fullStr tt¯bb¯ as a probe of new physics at the LHC
title_full_unstemmed tt¯bb¯ as a probe of new physics at the LHC
title_sort tt¯bb¯ as a probe of new physics at the LHC
dc.creator.none.fl_str_mv Alvarez, Ezequiel
Estevez, Mariel
author Alvarez, Ezequiel
author_facet Alvarez, Ezequiel
Estevez, Mariel
author_role author
author2 Estevez, Mariel
author2_role author
dc.subject.none.fl_str_mv top
bottom
lhc
third generation
topic top
bottom
lhc
third generation
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 study the ttbb final state at the LHC as a probe of new physics that couples mainly to the third generation of quarks. We analyze new physics simplified models with resonances of spin-0, -1 and -2. The sensitivity of the final states ttbb, tttt, bbbb and tt on each of these models is used to identify an important region in parameter space that is still not excluded and where ttbb is the most sensitive final state. We indicate possible experimental hints and discuss potential issues of observables that rely mainly on Monte Carlo predictions. A new observable is proposed that, at the price of requiring more statistics, reduces the impact of Monte Carlo predictions. We use preliminary 13 TeV results to give a raw estimate on the discovery reach and propose simple improvements on the observables.
Fil: Alvarez, Ezequiel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de San Martín. Escuela de Ciencia y Tecnología. Centro Internacional de Estudios Avanzados; Argentina
Fil: Estevez, Mariel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de San Martín. Escuela de Ciencia y Tecnología. Centro Internacional de Estudios Avanzados; Argentina
description We study the ttbb final state at the LHC as a probe of new physics that couples mainly to the third generation of quarks. We analyze new physics simplified models with resonances of spin-0, -1 and -2. The sensitivity of the final states ttbb, tttt, bbbb and tt on each of these models is used to identify an important region in parameter space that is still not excluded and where ttbb is the most sensitive final state. We indicate possible experimental hints and discuss potential issues of observables that rely mainly on Monte Carlo predictions. A new observable is proposed that, at the price of requiring more statistics, reduces the impact of Monte Carlo predictions. We use preliminary 13 TeV results to give a raw estimate on the discovery reach and propose simple improvements on the observables.
publishDate 2017
dc.date.none.fl_str_mv 2017-08
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/11336/72563
Alvarez, Ezequiel; Estevez, Mariel; tt¯bb¯ as a probe of new physics at the LHC; American Physical Society; Physical Review D; 96; 3; 8-2017; 1-28
0556-2821
2470-0029
CONICET Digital
CONICET
url http://hdl.handle.net/11336/72563
identifier_str_mv Alvarez, Ezequiel; Estevez, Mariel; tt¯bb¯ as a probe of new physics at the LHC; American Physical Society; Physical Review D; 96; 3; 8-2017; 1-28
0556-2821
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.96.035016
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevD.96.035016
info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1701.04427
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/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
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score 12.982451

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