Charged Z ′ to conciliate the apparent disagreement between t t ¯ Tevatron forward-backward asymmetry and LHC charge asymmetry

Autores
Alvarez, Ezequiel; Coluccio Leskow, Estefanía
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We propose a charged, electrically neutral, and flavour changing Z´ model to conciliate the apparent disagreement between the important excess found in the tt¯ Tevatron forward-backward asymmetry and the null ?compatible with negative? results found in the LHC charge asymmetry. We show that this model contributes positively to the forwardbackward asymmetry, whereas naturally a new cancellation is turned on at the LHC, yielding a null, or even negative, charge asymmetry. We found the region in parameter space that is simultaneously allowed by the stringent Tevatron and LHC observables. We show that the model is safe to atomic parity violation constraints and to tj/tj¯ resonance searches, and propose a possible increase in the Z´ width to avoid ttj¯ constraints. We evaluate the constraints to the model, as well as distinctive features in the fore-coming experimental results.
Fil: Alvarez, Ezequiel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Física Aplicada "Dr. Jorge Andrés Zgrablich". Universidad Nacional de San Luis. Facultad de Ciencias Físico Matemáticas y Naturales. Instituto de Física Aplicada "Dr. Jorge Andrés Zgrablich"; Argentina
Fil: Coluccio Leskow, Estefanía. 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
Materia
top-quark
asymmetry
Z-prime
lhc
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:11336/241451
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Charged Z ′ to conciliate the apparent disagreement between t t ¯ Tevatron forward-backward asymmetry and LHC charge asymmetryAlvarez, EzequielColuccio Leskow, Estefaníatop-quarkasymmetryZ-primelhchttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We propose a charged, electrically neutral, and flavour changing Z´ model to conciliate the apparent disagreement between the important excess found in the tt¯ Tevatron forward-backward asymmetry and the null ?compatible with negative? results found in the LHC charge asymmetry. We show that this model contributes positively to the forwardbackward asymmetry, whereas naturally a new cancellation is turned on at the LHC, yielding a null, or even negative, charge asymmetry. We found the region in parameter space that is simultaneously allowed by the stringent Tevatron and LHC observables. We show that the model is safe to atomic parity violation constraints and to tj/tj¯ resonance searches, and propose a possible increase in the Z´ width to avoid ttj¯ constraints. We evaluate the constraints to the model, as well as distinctive features in the fore-coming experimental results.Fil: Alvarez, Ezequiel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Física Aplicada "Dr. Jorge Andrés Zgrablich". Universidad Nacional de San Luis. Facultad de Ciencias Físico Matemáticas y Naturales. Instituto de Física Aplicada "Dr. Jorge Andrés Zgrablich"; ArgentinaFil: Coluccio Leskow, Estefanía. 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; ArgentinaAmerican Physical Society2012-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/241451Alvarez, Ezequiel; Coluccio Leskow, Estefanía; Charged Z ′ to conciliate the apparent disagreement between t t ¯ Tevatron forward-backward asymmetry and LHC charge asymmetry; American Physical Society; Physical Review D: Particles, Fields, Gravitation and Cosmology; 86; 11; 12-2012; 1-101550-7998CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://journals.aps.org/prd/abstract/10.1103/PhysRevD.86.114034info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevD.86.114034info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:59:59Zoai:ri.conicet.gov.ar:11336/241451instacron: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 11:59:59.683CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Charged Z ′ to conciliate the apparent disagreement between t t ¯ Tevatron forward-backward asymmetry and LHC charge asymmetry
title Charged Z ′ to conciliate the apparent disagreement between t t ¯ Tevatron forward-backward asymmetry and LHC charge asymmetry
spellingShingle Charged Z ′ to conciliate the apparent disagreement between t t ¯ Tevatron forward-backward asymmetry and LHC charge asymmetry
Alvarez, Ezequiel
top-quark
asymmetry
Z-prime
lhc
title_short Charged Z ′ to conciliate the apparent disagreement between t t ¯ Tevatron forward-backward asymmetry and LHC charge asymmetry
title_full Charged Z ′ to conciliate the apparent disagreement between t t ¯ Tevatron forward-backward asymmetry and LHC charge asymmetry
title_fullStr Charged Z ′ to conciliate the apparent disagreement between t t ¯ Tevatron forward-backward asymmetry and LHC charge asymmetry
title_full_unstemmed Charged Z ′ to conciliate the apparent disagreement between t t ¯ Tevatron forward-backward asymmetry and LHC charge asymmetry
title_sort Charged Z ′ to conciliate the apparent disagreement between t t ¯ Tevatron forward-backward asymmetry and LHC charge asymmetry
dc.creator.none.fl_str_mv Alvarez, Ezequiel
Coluccio Leskow, Estefanía
author Alvarez, Ezequiel
author_facet Alvarez, Ezequiel
Coluccio Leskow, Estefanía
author_role author
author2 Coluccio Leskow, Estefanía
author2_role author
dc.subject.none.fl_str_mv top-quark
asymmetry
Z-prime
lhc
topic top-quark
asymmetry
Z-prime
lhc
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 propose a charged, electrically neutral, and flavour changing Z´ model to conciliate the apparent disagreement between the important excess found in the tt¯ Tevatron forward-backward asymmetry and the null ?compatible with negative? results found in the LHC charge asymmetry. We show that this model contributes positively to the forwardbackward asymmetry, whereas naturally a new cancellation is turned on at the LHC, yielding a null, or even negative, charge asymmetry. We found the region in parameter space that is simultaneously allowed by the stringent Tevatron and LHC observables. We show that the model is safe to atomic parity violation constraints and to tj/tj¯ resonance searches, and propose a possible increase in the Z´ width to avoid ttj¯ constraints. We evaluate the constraints to the model, as well as distinctive features in the fore-coming experimental results.
Fil: Alvarez, Ezequiel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Física Aplicada "Dr. Jorge Andrés Zgrablich". Universidad Nacional de San Luis. Facultad de Ciencias Físico Matemáticas y Naturales. Instituto de Física Aplicada "Dr. Jorge Andrés Zgrablich"; Argentina
Fil: Coluccio Leskow, Estefanía. 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
description We propose a charged, electrically neutral, and flavour changing Z´ model to conciliate the apparent disagreement between the important excess found in the tt¯ Tevatron forward-backward asymmetry and the null ?compatible with negative? results found in the LHC charge asymmetry. We show that this model contributes positively to the forwardbackward asymmetry, whereas naturally a new cancellation is turned on at the LHC, yielding a null, or even negative, charge asymmetry. We found the region in parameter space that is simultaneously allowed by the stringent Tevatron and LHC observables. We show that the model is safe to atomic parity violation constraints and to tj/tj¯ resonance searches, and propose a possible increase in the Z´ width to avoid ttj¯ constraints. We evaluate the constraints to the model, as well as distinctive features in the fore-coming experimental results.
publishDate 2012
dc.date.none.fl_str_mv 2012-12
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/11336/241451
Alvarez, Ezequiel; Coluccio Leskow, Estefanía; Charged Z ′ to conciliate the apparent disagreement between t t ¯ Tevatron forward-backward asymmetry and LHC charge asymmetry; American Physical Society; Physical Review D: Particles, Fields, Gravitation and Cosmology; 86; 11; 12-2012; 1-10
1550-7998
CONICET Digital
CONICET
url http://hdl.handle.net/11336/241451
identifier_str_mv Alvarez, Ezequiel; Coluccio Leskow, Estefanía; Charged Z ′ to conciliate the apparent disagreement between t t ¯ Tevatron forward-backward asymmetry and LHC charge asymmetry; American Physical Society; Physical Review D: Particles, Fields, Gravitation and Cosmology; 86; 11; 12-2012; 1-10
1550-7998
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.86.114034
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevD.86.114034
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
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_ 1846782323674054656
score 12.982451

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