Neutral-current four-fermion production in e<sup>+</sup>e<sup>−</sup> interactions at LEP

Autores
Dova, María Teresa; L3 Collaboration
Año de publicación
2005
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Neutral-current four-fermion production, e+e- → f ̄f f' ̄ f', is studied in 0.7 fb−1 of data collected with the L3 detector at LEP at centre-of-mass energies √s = 183–209 GeV. Four final states are considered: q ̄qν ̄ν, q ̄qℓ+-, ℓ+-ℓ'+ℓ'- and ℓ+-ν ̄ν, where ℓ denotes either an electron or a muon. Their cross sections are measured and found to agree with the Standard Model predictions. In addition, the e+e- → Zγ → f ̄f f' ̄ f' process is studied and its total cross section at the average centre- of-mass energy (√s) = 196.6 GeV is found to be 0.29 ± 0.05 ± 0.03 pb, where the first uncertainty is statistical and the second systematic, in agreement with the Standard Model prediction of 0.22 pb. Finally, the mass spectra of the qq ̄ℓ+- final states are analysed to search for the possible production of a new neutral heavy particle, for which no evidence is found.
Facultad de Ciencias Exactas
Materia
Ciencias Exactas
Física
L3 detector
fermiones
Electromagnetismo
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by/3.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/79452

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oai_identifier_str oai:sedici.unlp.edu.ar:10915/79452
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Neutral-current four-fermion production in e<sup>+</sup>e<sup>−</sup> interactions at LEPDova, María TeresaL3 CollaborationCiencias ExactasFísicaL3 detectorfermionesElectromagnetismoNeutral-current four-fermion production, e<sup>+</sup>e<sup>-</sup> → f ̄f f' ̄ f', is studied in 0.7 fb<sup>−1</sup> of data collected with the L3 detector at LEP at centre-of-mass energies √s = 183–209 GeV. Four final states are considered: q ̄qν ̄ν, q ̄qℓ<sup>+</sup>ℓ<sup>-</sup>, ℓ<sup>+</sup>ℓ<sup>-</sup>ℓ'<sup>+</sup>ℓ'<sup>-</sup> and ℓ<sup>+</sup>ℓ<sup>-</sup>ν ̄ν, where ℓ denotes either an electron or a muon. Their cross sections are measured and found to agree with the Standard Model predictions. In addition, the e<sup>+</sup>e<sup>-</sup> → Zγ <sup>∗</sup> → f ̄f f' ̄ f' process is studied and its total cross section at the average centre- of-mass energy (√s) = 196.6 GeV is found to be 0.29 ± 0.05 ± 0.03 pb, where the first uncertainty is statistical and the second systematic, in agreement with the Standard Model prediction of 0.22 pb. Finally, the mass spectra of the qq ̄ℓ<sup>+</sup>ℓ<sup>-</sup> final states are analysed to search for the possible production of a new neutral heavy particle, for which no evidence is found.Facultad de Ciencias Exactas2005-05-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf159-173http://sedici.unlp.edu.ar/handle/10915/79452enginfo:eu-repo/semantics/altIdentifier/issn/0370-2693info:eu-repo/semantics/altIdentifier/doi/10.1016/j.physletb.2005.04.062info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/3.0/Creative Commons Attribution 3.0 Unported (CC BY 3.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:12:17Zoai:sedici.unlp.edu.ar:10915/79452Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:12:17.947SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Neutral-current four-fermion production in e<sup>+</sup>e<sup>−</sup> interactions at LEP
title Neutral-current four-fermion production in e<sup>+</sup>e<sup>−</sup> interactions at LEP
spellingShingle Neutral-current four-fermion production in e<sup>+</sup>e<sup>−</sup> interactions at LEP
Dova, María Teresa
Ciencias Exactas
Física
L3 detector
fermiones
Electromagnetismo
title_short Neutral-current four-fermion production in e<sup>+</sup>e<sup>−</sup> interactions at LEP
title_full Neutral-current four-fermion production in e<sup>+</sup>e<sup>−</sup> interactions at LEP
title_fullStr Neutral-current four-fermion production in e<sup>+</sup>e<sup>−</sup> interactions at LEP
title_full_unstemmed Neutral-current four-fermion production in e<sup>+</sup>e<sup>−</sup> interactions at LEP
title_sort Neutral-current four-fermion production in e<sup>+</sup>e<sup>−</sup> interactions at LEP
dc.creator.none.fl_str_mv Dova, María Teresa
L3 Collaboration
author Dova, María Teresa
author_facet Dova, María Teresa
L3 Collaboration
author_role author
author2 L3 Collaboration
author2_role author
dc.subject.none.fl_str_mv Ciencias Exactas
Física
L3 detector
fermiones
Electromagnetismo
topic Ciencias Exactas
Física
L3 detector
fermiones
Electromagnetismo
dc.description.none.fl_txt_mv Neutral-current four-fermion production, e<sup>+</sup>e<sup>-</sup> → f ̄f f' ̄ f', is studied in 0.7 fb<sup>−1</sup> of data collected with the L3 detector at LEP at centre-of-mass energies √s = 183–209 GeV. Four final states are considered: q ̄qν ̄ν, q ̄qℓ<sup>+</sup>ℓ<sup>-</sup>, ℓ<sup>+</sup>ℓ<sup>-</sup>ℓ'<sup>+</sup>ℓ'<sup>-</sup> and ℓ<sup>+</sup>ℓ<sup>-</sup>ν ̄ν, where ℓ denotes either an electron or a muon. Their cross sections are measured and found to agree with the Standard Model predictions. In addition, the e<sup>+</sup>e<sup>-</sup> → Zγ <sup>∗</sup> → f ̄f f' ̄ f' process is studied and its total cross section at the average centre- of-mass energy (√s) = 196.6 GeV is found to be 0.29 ± 0.05 ± 0.03 pb, where the first uncertainty is statistical and the second systematic, in agreement with the Standard Model prediction of 0.22 pb. Finally, the mass spectra of the qq ̄ℓ<sup>+</sup>ℓ<sup>-</sup> final states are analysed to search for the possible production of a new neutral heavy particle, for which no evidence is found.
Facultad de Ciencias Exactas
description Neutral-current four-fermion production, e<sup>+</sup>e<sup>-</sup> → f ̄f f' ̄ f', is studied in 0.7 fb<sup>−1</sup> of data collected with the L3 detector at LEP at centre-of-mass energies √s = 183–209 GeV. Four final states are considered: q ̄qν ̄ν, q ̄qℓ<sup>+</sup>ℓ<sup>-</sup>, ℓ<sup>+</sup>ℓ<sup>-</sup>ℓ'<sup>+</sup>ℓ'<sup>-</sup> and ℓ<sup>+</sup>ℓ<sup>-</sup>ν ̄ν, where ℓ denotes either an electron or a muon. Their cross sections are measured and found to agree with the Standard Model predictions. In addition, the e<sup>+</sup>e<sup>-</sup> → Zγ <sup>∗</sup> → f ̄f f' ̄ f' process is studied and its total cross section at the average centre- of-mass energy (√s) = 196.6 GeV is found to be 0.29 ± 0.05 ± 0.03 pb, where the first uncertainty is statistical and the second systematic, in agreement with the Standard Model prediction of 0.22 pb. Finally, the mass spectra of the qq ̄ℓ<sup>+</sup>ℓ<sup>-</sup> final states are analysed to search for the possible production of a new neutral heavy particle, for which no evidence is found.
publishDate 2005
dc.date.none.fl_str_mv 2005-05-05
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/10915/79452
url http://sedici.unlp.edu.ar/handle/10915/79452
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.2005.04.062
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/3.0/
Creative Commons Attribution 3.0 Unported (CC BY 3.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/3.0/
Creative Commons Attribution 3.0 Unported (CC BY 3.0)
dc.format.none.fl_str_mv application/pdf
159-173
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
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