Study of Z boson pair production in e+e- collisions at LEP at √s = 189 GeV

The pair production of Z bosons is studied using the data collected by the L3 detector at LEP in 1998 in e+e- collisions at a centre-of-mass energy of 189 GeV. All the visible final states are considered and the cross section of this process is q0.15 measured to be <math><mtext>0.74</...

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Detalles Bibliográficos
Autores principales: Dova, María Teresa, L3 Collaboration
Formato: Articulo
Lenguaje:Inglés
Publicado: 1999
Materias:
Ciencias Exactas
Física
e+e- collision
Z boson
L3 detector
centre-of-mass energies
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/78129
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-78129
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
Física
e+e- collision
Z boson
L3 detector
centre-of-mass energies
spellingShingle Ciencias Exactas
Física
e+e- collision
Z boson
L3 detector
centre-of-mass energies
Dova, María Teresa
L3 Collaboration
Study of Z boson pair production in e+e- collisions at LEP at √s = 189 GeV
topic_facet Ciencias Exactas
Física
e+e- collision
Z boson
L3 detector
centre-of-mass energies
description The pair production of Z bosons is studied using the data collected by the L3 detector at LEP in 1998 in e+e- collisions at a centre-of-mass energy of 189 GeV. All the visible final states are considered and the cross section of this process is q0.15 measured to be <math><mtext>0.74</mtext><msup><mi></mi><mn>+0.15</mn></msup><msub><mi></mi><mn>−0.14</mn></msub><mspace sp="0.2" width="2px" linebreak="nobreak" is="true"></mspace><mtext>(</mtext><mtext>stat.)</mtext><mspace sp="0.2" width="2px" linebreak="nobreak" is="true"></mspace><mtext>±0.04</mtext><mspace sp="0.2" width="2px" linebreak="nobreak" is="true"></mspace><mtext>(</mtext><mtext>syst.)</mtext><mspace sp="0.2" width="2px" linebreak="nobreak" is="true"></mspace><mtext>pb</mtext></math>. Final states containing b quarks are enhanced by a dedicated selection and their production cross section is found to be <math><mtext>0.18</mtext><msup><mi></mi><mn>+0.09</mn></msup><msub><mi></mi><mn>−0.07</mn></msub><mspace sp="0.2" width="2px" linebreak="nobreak" is="true"></mspace><mtext>(</mtext><mtext>stat.)</mtext><mspace sp="0.2" width="2px" linebreak="nobreak" is="true"></mspace><mtext>±0.02</mtext><mspace sp="0.2" width="2px" linebreak="nobreak" is="true"></mspace><mtext>(syst.)</mtext><mspace sp="0.2" width="2px" linebreak="nobreak" is="true"></mspace><mtext>pb</mtext></math>. Both results are in agreement with the Standard Model predictions. Limits on anomalous couplings between neutral gauge bosons are derived from these measurements.
format Articulo
Articulo
author Dova, María Teresa
L3 Collaboration
author_facet Dova, María Teresa
L3 Collaboration
author_sort Dova, María Teresa
title Study of Z boson pair production in e+e- collisions at LEP at √s = 189 GeV
title_short Study of Z boson pair production in e+e- collisions at LEP at √s = 189 GeV
title_full Study of Z boson pair production in e+e- collisions at LEP at √s = 189 GeV
title_fullStr Study of Z boson pair production in e+e- collisions at LEP at √s = 189 GeV
title_full_unstemmed Study of Z boson pair production in e+e- collisions at LEP at √s = 189 GeV
title_sort study of z boson pair production in e+e- collisions at lep at √s = 189 gev
publishDate 1999
url http://sedici.unlp.edu.ar/handle/10915/78129
work_keys_str_mv AT dovamariateresa studyofzbosonpairproductionineecollisionsatlepats189gev
AT l3collaboration studyofzbosonpairproductionineecollisionsatlepats189gev
bdutipo_str Repositorios
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