Inclusive J production in Z° decays

Inclusive J production in Z ° decays is observed via the leptonic decay mode J ~ e + e- (~ = e, #). We measure the branching ratio Br(Z ° ~ J + X) = (4.1 -4- 0.7 (star.) -4- 0.3 (sys.)) × 10 -3. We have calculated the fraction of the J mesons from b-hadron decay and find a branching ratio of B r (b...

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Detalles Bibliográficos
Autores principales: Dova, María Teresa, L3 Collaboration
Formato: Articulo
Lenguaje:Inglés
Publicado: 1992
Materias:
Ciencias Exactas
J production
Z° decays
leptonic decay
Física
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/73122
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-73122
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Exactas
J production
Z° decays
leptonic decay
Física
spellingShingle Ciencias Exactas
J production
Z° decays
leptonic decay
Física
Dova, María Teresa
L3 Collaboration
Inclusive J production in Z° decays
topic_facet Ciencias Exactas
J production
Z° decays
leptonic decay
Física
description Inclusive J production in Z ° decays is observed via the leptonic decay mode J ~ e + e- (~ = e, #). We measure the branching ratio Br(Z ° ~ J + X) = (4.1 -4- 0.7 (star.) -4- 0.3 (sys.)) × 10 -3. We have calculated the fraction of the J mesons from b-hadron decay and find a branching ratio of B r (b ~ J + X) = (1.3 -4- 0.2 (star.) -4- 0.2 (sys.)) × 10-2. We determine the average fractional energy of bottom hadrons (x e) = 0.70 -4- 0.03 (stat.) -0101 +002 (sys.) using the momentum spectrum of the J mesons. From a study of the angle between the J and the most energetic jet, we set an upper limit on the branching ratio Br(Z ° ~ q/tg*;g* ~ J -F X) < 7.0 × 10 -4 at 90% confidence level.
format Articulo
Articulo
author Dova, María Teresa
L3 Collaboration
author_facet Dova, María Teresa
L3 Collaboration
author_sort Dova, María Teresa
title Inclusive J production in Z° decays
title_short Inclusive J production in Z° decays
title_full Inclusive J production in Z° decays
title_fullStr Inclusive J production in Z° decays
title_full_unstemmed Inclusive J production in Z° decays
title_sort inclusive j production in z° decays
publishDate 1992
url http://sedici.unlp.edu.ar/handle/10915/73122
work_keys_str_mv AT dovamariateresa inclusivejproductioninzdecays
AT l3collaboration inclusivejproductioninzdecays
bdutipo_str Repositorios
_version_ 1764820483559129089

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