Search for neutral charmless B decays at LEP

Autores
Dova, María Teresa; L3 Collaboration
Año de publicación
1995
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
A search for rare charmless decays of B0d and B0s mesons has been performed in the exclusive channels B0d(s) →ηη0, B0d(s) →ηπ0 and B0d(s) →π0π0. The data sample consisted of three million hadronic Z decays collected by the L3 experiment at LEP from 1991 through 1994. No candidate event has been observed and the following upper limits at 90% confidence level on the branching ratios have been set: Br(B0d→ηη) <4.1 x 10−4, Br(B0s →ηη) < 1.5 x 10−3, Br(B0d→ηπ0) < 2.5 x 10−4, Br(B0s→ηπ0) < 1.0 x 10−3, Br(B0d→π0π0) < 6.0 x 10−5, Br(B0s→π0π0) < 2.1 x 10−4. These are the first experimental limits on Bd0→ηη and on the Bs0 neutral charmless modes.
Facultad de Ciencias Exactas
Materia
Ciencias Exactas
Física
L3 experiment
large electron positron collider
Higgs boson
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/80889
Acceder
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oai_identifier_str oai:sedici.unlp.edu.ar:10915/80889
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Search for neutral charmless B decays at LEPDova, María TeresaL3 CollaborationCiencias ExactasFísicaL3 experimentlarge electron positron colliderHiggs bosonA search for rare charmless decays of B<sup>0</sup><sub>d</sub> and B<sup>0</sup><sub>s</sub> mesons has been performed in the exclusive channels B<sup>0</sup><sub>d</sub>(s) →ηη<sup>0</sup>, B<sup>0</sup><sub>d</sub>(s) →ηπ<sup>0</sup> and B<sup>0</sup><sub>d</sub>(s) →π<sup>0</sup>π<sup>0</sup>. The data sample consisted of three million hadronic Z decays collected by the L3 experiment at LEP from 1991 through 1994. No candidate event has been observed and the following upper limits at 90% confidence level on the branching ratios have been set: Br(B<sup>0</sup><sub>d</sub>→ηη) <4.1 x 10<sup>−4</sup>, Br(B<sup>0</sup><sub>s</sub> →ηη) < 1.5 x 10<sup>−3</sup>, Br(B<sup>0</sup><sub>d</sub>→ηπ<sup>0</sup>) < 2.5 x 10<sup>−4</sup>, Br(B<sup>0</sup><sub>s</sub>→ηπ<sup>0</sup>) < 1.0 x 10<sup>−3</sup>, Br(B<sup>0</sup><sub>d</sub>→π<sup>0</sup>π<sup>0</sup>) < 6.0 x 10<sup>−5</sup>, Br(B<sup>0</sup><sub>s</sub>→π<sup>0</sup>π<sup>0</sup>) < 2.1 x 10<sup>−4</sup>. These are the first experimental limits on Bd0→ηη and on the Bs0 neutral charmless modes.Facultad de Ciencias Exactas1995-11-16info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf127-136http://sedici.unlp.edu.ar/handle/10915/80889enginfo:eu-repo/semantics/altIdentifier/issn/0370-2693info:eu-repo/semantics/altIdentifier/doi/10.1016/0370-2693(95)01042-Oinfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:14:57Zoai:sedici.unlp.edu.ar:10915/80889Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:14:57.749SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Search for neutral charmless B decays at LEP
title Search for neutral charmless B decays at LEP
spellingShingle Search for neutral charmless B decays at LEP
Dova, María Teresa
Ciencias Exactas
Física
L3 experiment
large electron positron collider
Higgs boson
title_short Search for neutral charmless B decays at LEP
title_full Search for neutral charmless B decays at LEP
title_fullStr Search for neutral charmless B decays at LEP
title_full_unstemmed Search for neutral charmless B decays at LEP
title_sort Search for neutral charmless B decays 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 experiment
large electron positron collider
Higgs boson
topic Ciencias Exactas
Física
L3 experiment
large electron positron collider
Higgs boson
dc.description.none.fl_txt_mv A search for rare charmless decays of B<sup>0</sup><sub>d</sub> and B<sup>0</sup><sub>s</sub> mesons has been performed in the exclusive channels B<sup>0</sup><sub>d</sub>(s) →ηη<sup>0</sup>, B<sup>0</sup><sub>d</sub>(s) →ηπ<sup>0</sup> and B<sup>0</sup><sub>d</sub>(s) →π<sup>0</sup>π<sup>0</sup>. The data sample consisted of three million hadronic Z decays collected by the L3 experiment at LEP from 1991 through 1994. No candidate event has been observed and the following upper limits at 90% confidence level on the branching ratios have been set: Br(B<sup>0</sup><sub>d</sub>→ηη) <4.1 x 10<sup>−4</sup>, Br(B<sup>0</sup><sub>s</sub> →ηη) < 1.5 x 10<sup>−3</sup>, Br(B<sup>0</sup><sub>d</sub>→ηπ<sup>0</sup>) < 2.5 x 10<sup>−4</sup>, Br(B<sup>0</sup><sub>s</sub>→ηπ<sup>0</sup>) < 1.0 x 10<sup>−3</sup>, Br(B<sup>0</sup><sub>d</sub>→π<sup>0</sup>π<sup>0</sup>) < 6.0 x 10<sup>−5</sup>, Br(B<sup>0</sup><sub>s</sub>→π<sup>0</sup>π<sup>0</sup>) < 2.1 x 10<sup>−4</sup>. These are the first experimental limits on Bd0→ηη and on the Bs0 neutral charmless modes.
Facultad de Ciencias Exactas
description A search for rare charmless decays of B<sup>0</sup><sub>d</sub> and B<sup>0</sup><sub>s</sub> mesons has been performed in the exclusive channels B<sup>0</sup><sub>d</sub>(s) →ηη<sup>0</sup>, B<sup>0</sup><sub>d</sub>(s) →ηπ<sup>0</sup> and B<sup>0</sup><sub>d</sub>(s) →π<sup>0</sup>π<sup>0</sup>. The data sample consisted of three million hadronic Z decays collected by the L3 experiment at LEP from 1991 through 1994. No candidate event has been observed and the following upper limits at 90% confidence level on the branching ratios have been set: Br(B<sup>0</sup><sub>d</sub>→ηη) <4.1 x 10<sup>−4</sup>, Br(B<sup>0</sup><sub>s</sub> →ηη) < 1.5 x 10<sup>−3</sup>, Br(B<sup>0</sup><sub>d</sub>→ηπ<sup>0</sup>) < 2.5 x 10<sup>−4</sup>, Br(B<sup>0</sup><sub>s</sub>→ηπ<sup>0</sup>) < 1.0 x 10<sup>−3</sup>, Br(B<sup>0</sup><sub>d</sub>→π<sup>0</sup>π<sup>0</sup>) < 6.0 x 10<sup>−5</sup>, Br(B<sup>0</sup><sub>s</sub>→π<sup>0</sup>π<sup>0</sup>) < 2.1 x 10<sup>−4</sup>. These are the first experimental limits on Bd0→ηη and on the Bs0 neutral charmless modes.
publishDate 1995
dc.date.none.fl_str_mv 1995-11-16
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/10915/80889
url http://sedici.unlp.edu.ar/handle/10915/80889
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/10.1016/0370-2693(95)01042-O
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
127-136
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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score 13.070432

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