Evidence for the spin-0 nature of the Higgs boson using ATLAS data

Autores
Anduaga, Xabier Sebastián; Dova, María Teresa; Monticelli, Fernando Gabriel; Tripiana, Martín F.; The ATLAS Collaboration
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Studies of the spin and parity quantum numbers of the Higgs boson are presented, based on proton–proton collision data collected by the ATLAS experiment at the LHC. The Standard Model spin–parity JP=0+ hypothesis is compared with alternative hypotheses using the Higgs boson decays H→ γγ, HZZ4 and HWWνν, as well as the combination of these channels. The analysed dataset corresponds to an integrated luminosity of 20.7 fb−1 collected at a centre–of–mass energy of √ s = 8 TeV. For the HZZ4 decay mode the dataset corresponding to an integrated luminosity of 4.6 fb−1 collected at √ s = 7 TeV is added. The data are compatible with the Standard Model JP=0+ quantum numbers for the Higgs boson, whereas all alternative hypotheses studied in this letter, namely some specific JP=0,1+,1,2+ models, are excluded at confidence levels above 97.8%. This exclusion holds independently of the assumptions on the coupling strengths to the Standard Model particles and in the case of the JP=2+ model, of the relative fractions of gluon–fusion and quark–antiquark production of the spin-2 particle. The data thus provide evidence for the spin-0 nature of the Higgs boson, with positive parity being strongly preferred.
Facultad de Ciencias Exactas
Materia
Ciencias Exactas
spin-0 nature
Higgs boson
ATLAS data
Física
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:10915/77572

id SEDICI_907002095bb7a8b1aad1a761e01eb9a3
oai_identifier_str oai:sedici.unlp.edu.ar:10915/77572
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Evidence for the spin-0 nature of the Higgs boson using ATLAS dataAnduaga, Xabier SebastiánDova, María TeresaMonticelli, Fernando GabrielTripiana, Martín F.The ATLAS CollaborationCiencias Exactasspin-0 natureHiggs bosonATLAS dataFísicaStudies of the spin and parity quantum numbers of the Higgs boson are presented, based on proton–proton collision data collected by the ATLAS experiment at the LHC. The Standard Model spin–parity <math xmlns="http://www.w3.org/1998/Math/MathML"><msup is="true"><mrow is="true"><mi is="true">J</mi></mrow><mrow is="true"><mi is="true">P</mi></mrow></msup><mo is="true">=</mo><msup is="true"><mrow is="true"><mn is="true">0</mn></mrow><mrow is="true"><mo is="true">+</mo></mrow></msup></math> hypothesis is compared with alternative hypotheses using the Higgs boson decays H→ γγ, <math xmlns="http://www.w3.org/1998/Math/MathML"><mi is="true">H</mi><mo is="true">→</mo><mi is="true">Z</mi><msup is="true"><mrow is="true"><mi is="true">Z</mi></mrow><mrow is="true"><mo is="true">⁎</mo></mrow></msup><mo is="true">→</mo><mn is="true">4</mn><mi is="true">ℓ</mi></math> and <math xmlns="http://www.w3.org/1998/Math/MathML"><mi is="true">H</mi><mo is="true">→</mo><mi is="true">W</mi><msup is="true"><mrow is="true"><mi is="true">W</mi></mrow><mrow is="true"><mo is="true">⁎</mo></mrow></msup><mo is="true">→</mo><mi is="true">ℓ</mi><mi is="true">ν</mi><mi is="true">ℓ</mi><mi is="true">ν</mi></math>, as well as the combination of these channels. The analysed dataset corresponds to an integrated luminosity of 20.7 fb−1 collected at a centre–of–mass energy of √ s = 8 TeV. For the <math xmlns="http://www.w3.org/1998/Math/MathML"><mi is="true">H</mi><mo is="true">→</mo><mi is="true">Z</mi><msup is="true"><mrow is="true"><mi is="true">Z</mi></mrow><mrow is="true"><mo is="true">⁎</mo></mrow></msup><mo is="true">→</mo><mn is="true">4</mn><mi is="true">ℓ</mi></math> decay mode the dataset corresponding to an integrated luminosity of 4.6 fb−1 collected at √ s = 7 TeV is added. The data are compatible with the Standard Model <math xmlns="http://www.w3.org/1998/Math/MathML"><msup is="true"><mrow is="true"><mi is="true">J</mi></mrow><mrow is="true"><mi is="true">P</mi></mrow></msup><mo is="true">=</mo><msup is="true"><mrow is="true"><mn is="true">0</mn></mrow><mrow is="true"><mo is="true">+</mo></mrow></msup></math> quantum numbers for the Higgs boson, whereas all alternative hypotheses studied in this letter, namely some specific <math xmlns="http://www.w3.org/1998/Math/MathML"><msup is="true"><mrow is="true"><mi is="true">J</mi></mrow><mrow is="true"><mi is="true">P</mi></mrow></msup><mo is="true">=</mo><msup is="true"><mrow is="true"><mn is="true">0</mn></mrow><mrow is="true"><mo is="true">−</mo></mrow></msup><mo is="true">,</mo><msup is="true"><mrow is="true"><mn is="true">1</mn></mrow><mrow is="true"><mo is="true">+</mo></mrow></msup><mo is="true">,</mo><msup is="true"><mrow is="true"><mn is="true">1</mn></mrow><mrow is="true"><mo is="true">−</mo></mrow></msup><mo is="true">,</mo><msup is="true"><mrow is="true"><mn is="true">2</mn></mrow><mrow is="true"><mo is="true">+</mo></mrow></msup></math> models, are excluded at confidence levels above 97.8%. This exclusion holds independently of the assumptions on the coupling strengths to the Standard Model particles and in the case of the <math xmlns="http://www.w3.org/1998/Math/MathML"><msup is="true"><mrow is="true"><mi is="true">J</mi></mrow><mrow is="true"><mi is="true">P</mi></mrow></msup><mo is="true">=</mo><msup is="true"><mrow is="true"><mn is="true">2</mn></mrow><mrow is="true"><mo is="true">+</mo></mrow></msup></math> model, of the relative fractions of gluon–fusion and quark–antiquark production of the spin-2 particle. The data thus provide evidence for the spin-0 nature of the Higgs boson, with positive parity being strongly preferred.Facultad de Ciencias Exactas2013-07-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf120-144http://sedici.unlp.edu.ar/handle/10915/77572enginfo:eu-repo/semantics/altIdentifier/issn/0370-2693info:eu-repo/semantics/altIdentifier/doi/10.1016/j.physletb.2013.08.026info: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:UNLP2025-09-29T11:12:32Zoai:sedici.unlp.edu.ar:10915/77572Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:12:32.592SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Evidence for the spin-0 nature of the Higgs boson using ATLAS data
title Evidence for the spin-0 nature of the Higgs boson using ATLAS data
spellingShingle Evidence for the spin-0 nature of the Higgs boson using ATLAS data
Anduaga, Xabier Sebastián
Ciencias Exactas
spin-0 nature
Higgs boson
ATLAS data
Física
title_short Evidence for the spin-0 nature of the Higgs boson using ATLAS data
title_full Evidence for the spin-0 nature of the Higgs boson using ATLAS data
title_fullStr Evidence for the spin-0 nature of the Higgs boson using ATLAS data
title_full_unstemmed Evidence for the spin-0 nature of the Higgs boson using ATLAS data
title_sort Evidence for the spin-0 nature of the Higgs boson using ATLAS data
dc.creator.none.fl_str_mv Anduaga, Xabier Sebastián
Dova, María Teresa
Monticelli, Fernando Gabriel
Tripiana, Martín F.
The ATLAS Collaboration
author Anduaga, Xabier Sebastián
author_facet Anduaga, Xabier Sebastián
Dova, María Teresa
Monticelli, Fernando Gabriel
Tripiana, Martín F.
The ATLAS Collaboration
author_role author
author2 Dova, María Teresa
Monticelli, Fernando Gabriel
Tripiana, Martín F.
The ATLAS Collaboration
author2_role author
author
author
author
dc.subject.none.fl_str_mv Ciencias Exactas
spin-0 nature
Higgs boson
ATLAS data
Física
topic Ciencias Exactas
spin-0 nature
Higgs boson
ATLAS data
Física
dc.description.none.fl_txt_mv Studies of the spin and parity quantum numbers of the Higgs boson are presented, based on proton–proton collision data collected by the ATLAS experiment at the LHC. The Standard Model spin–parity <math xmlns="http://www.w3.org/1998/Math/MathML"><msup is="true"><mrow is="true"><mi is="true">J</mi></mrow><mrow is="true"><mi is="true">P</mi></mrow></msup><mo is="true">=</mo><msup is="true"><mrow is="true"><mn is="true">0</mn></mrow><mrow is="true"><mo is="true">+</mo></mrow></msup></math> hypothesis is compared with alternative hypotheses using the Higgs boson decays H→ γγ, <math xmlns="http://www.w3.org/1998/Math/MathML"><mi is="true">H</mi><mo is="true">→</mo><mi is="true">Z</mi><msup is="true"><mrow is="true"><mi is="true">Z</mi></mrow><mrow is="true"><mo is="true">⁎</mo></mrow></msup><mo is="true">→</mo><mn is="true">4</mn><mi is="true">ℓ</mi></math> and <math xmlns="http://www.w3.org/1998/Math/MathML"><mi is="true">H</mi><mo is="true">→</mo><mi is="true">W</mi><msup is="true"><mrow is="true"><mi is="true">W</mi></mrow><mrow is="true"><mo is="true">⁎</mo></mrow></msup><mo is="true">→</mo><mi is="true">ℓ</mi><mi is="true">ν</mi><mi is="true">ℓ</mi><mi is="true">ν</mi></math>, as well as the combination of these channels. The analysed dataset corresponds to an integrated luminosity of 20.7 fb−1 collected at a centre–of–mass energy of √ s = 8 TeV. For the <math xmlns="http://www.w3.org/1998/Math/MathML"><mi is="true">H</mi><mo is="true">→</mo><mi is="true">Z</mi><msup is="true"><mrow is="true"><mi is="true">Z</mi></mrow><mrow is="true"><mo is="true">⁎</mo></mrow></msup><mo is="true">→</mo><mn is="true">4</mn><mi is="true">ℓ</mi></math> decay mode the dataset corresponding to an integrated luminosity of 4.6 fb−1 collected at √ s = 7 TeV is added. The data are compatible with the Standard Model <math xmlns="http://www.w3.org/1998/Math/MathML"><msup is="true"><mrow is="true"><mi is="true">J</mi></mrow><mrow is="true"><mi is="true">P</mi></mrow></msup><mo is="true">=</mo><msup is="true"><mrow is="true"><mn is="true">0</mn></mrow><mrow is="true"><mo is="true">+</mo></mrow></msup></math> quantum numbers for the Higgs boson, whereas all alternative hypotheses studied in this letter, namely some specific <math xmlns="http://www.w3.org/1998/Math/MathML"><msup is="true"><mrow is="true"><mi is="true">J</mi></mrow><mrow is="true"><mi is="true">P</mi></mrow></msup><mo is="true">=</mo><msup is="true"><mrow is="true"><mn is="true">0</mn></mrow><mrow is="true"><mo is="true">−</mo></mrow></msup><mo is="true">,</mo><msup is="true"><mrow is="true"><mn is="true">1</mn></mrow><mrow is="true"><mo is="true">+</mo></mrow></msup><mo is="true">,</mo><msup is="true"><mrow is="true"><mn is="true">1</mn></mrow><mrow is="true"><mo is="true">−</mo></mrow></msup><mo is="true">,</mo><msup is="true"><mrow is="true"><mn is="true">2</mn></mrow><mrow is="true"><mo is="true">+</mo></mrow></msup></math> models, are excluded at confidence levels above 97.8%. This exclusion holds independently of the assumptions on the coupling strengths to the Standard Model particles and in the case of the <math xmlns="http://www.w3.org/1998/Math/MathML"><msup is="true"><mrow is="true"><mi is="true">J</mi></mrow><mrow is="true"><mi is="true">P</mi></mrow></msup><mo is="true">=</mo><msup is="true"><mrow is="true"><mn is="true">2</mn></mrow><mrow is="true"><mo is="true">+</mo></mrow></msup></math> model, of the relative fractions of gluon–fusion and quark–antiquark production of the spin-2 particle. The data thus provide evidence for the spin-0 nature of the Higgs boson, with positive parity being strongly preferred.
Facultad de Ciencias Exactas
description Studies of the spin and parity quantum numbers of the Higgs boson are presented, based on proton–proton collision data collected by the ATLAS experiment at the LHC. The Standard Model spin–parity <math xmlns="http://www.w3.org/1998/Math/MathML"><msup is="true"><mrow is="true"><mi is="true">J</mi></mrow><mrow is="true"><mi is="true">P</mi></mrow></msup><mo is="true">=</mo><msup is="true"><mrow is="true"><mn is="true">0</mn></mrow><mrow is="true"><mo is="true">+</mo></mrow></msup></math> hypothesis is compared with alternative hypotheses using the Higgs boson decays H→ γγ, <math xmlns="http://www.w3.org/1998/Math/MathML"><mi is="true">H</mi><mo is="true">→</mo><mi is="true">Z</mi><msup is="true"><mrow is="true"><mi is="true">Z</mi></mrow><mrow is="true"><mo is="true">⁎</mo></mrow></msup><mo is="true">→</mo><mn is="true">4</mn><mi is="true">ℓ</mi></math> and <math xmlns="http://www.w3.org/1998/Math/MathML"><mi is="true">H</mi><mo is="true">→</mo><mi is="true">W</mi><msup is="true"><mrow is="true"><mi is="true">W</mi></mrow><mrow is="true"><mo is="true">⁎</mo></mrow></msup><mo is="true">→</mo><mi is="true">ℓ</mi><mi is="true">ν</mi><mi is="true">ℓ</mi><mi is="true">ν</mi></math>, as well as the combination of these channels. The analysed dataset corresponds to an integrated luminosity of 20.7 fb−1 collected at a centre–of–mass energy of √ s = 8 TeV. For the <math xmlns="http://www.w3.org/1998/Math/MathML"><mi is="true">H</mi><mo is="true">→</mo><mi is="true">Z</mi><msup is="true"><mrow is="true"><mi is="true">Z</mi></mrow><mrow is="true"><mo is="true">⁎</mo></mrow></msup><mo is="true">→</mo><mn is="true">4</mn><mi is="true">ℓ</mi></math> decay mode the dataset corresponding to an integrated luminosity of 4.6 fb−1 collected at √ s = 7 TeV is added. The data are compatible with the Standard Model <math xmlns="http://www.w3.org/1998/Math/MathML"><msup is="true"><mrow is="true"><mi is="true">J</mi></mrow><mrow is="true"><mi is="true">P</mi></mrow></msup><mo is="true">=</mo><msup is="true"><mrow is="true"><mn is="true">0</mn></mrow><mrow is="true"><mo is="true">+</mo></mrow></msup></math> quantum numbers for the Higgs boson, whereas all alternative hypotheses studied in this letter, namely some specific <math xmlns="http://www.w3.org/1998/Math/MathML"><msup is="true"><mrow is="true"><mi is="true">J</mi></mrow><mrow is="true"><mi is="true">P</mi></mrow></msup><mo is="true">=</mo><msup is="true"><mrow is="true"><mn is="true">0</mn></mrow><mrow is="true"><mo is="true">−</mo></mrow></msup><mo is="true">,</mo><msup is="true"><mrow is="true"><mn is="true">1</mn></mrow><mrow is="true"><mo is="true">+</mo></mrow></msup><mo is="true">,</mo><msup is="true"><mrow is="true"><mn is="true">1</mn></mrow><mrow is="true"><mo is="true">−</mo></mrow></msup><mo is="true">,</mo><msup is="true"><mrow is="true"><mn is="true">2</mn></mrow><mrow is="true"><mo is="true">+</mo></mrow></msup></math> models, are excluded at confidence levels above 97.8%. This exclusion holds independently of the assumptions on the coupling strengths to the Standard Model particles and in the case of the <math xmlns="http://www.w3.org/1998/Math/MathML"><msup is="true"><mrow is="true"><mi is="true">J</mi></mrow><mrow is="true"><mi is="true">P</mi></mrow></msup><mo is="true">=</mo><msup is="true"><mrow is="true"><mn is="true">2</mn></mrow><mrow is="true"><mo is="true">+</mo></mrow></msup></math> model, of the relative fractions of gluon–fusion and quark–antiquark production of the spin-2 particle. The data thus provide evidence for the spin-0 nature of the Higgs boson, with positive parity being strongly preferred.
publishDate 2013
dc.date.none.fl_str_mv 2013-07-04
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/10915/77572
url http://sedici.unlp.edu.ar/handle/10915/77572
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0370-2693
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.physletb.2013.08.026
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
120-144
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_ 1844615995880112128
score 13.070432