Study of neutral-current four-fermion and ZZ production in e+e- collisions at √s = 183 GeV
A study of neutral-current four-fermion processes is performed using a data sample corresponding to 55.3 pb-1 of integrated luminosity collected by the L3 detector at LEP at an average centre-of-mass energy of 183 GeV. The neutral-current four-fermion cross sections for final states with a pair of c...
Guardado en:
Autores principales: | , , |
---|---|
Formato: | Articulo |
Lenguaje: | Inglés |
Publicado: |
1999
|
Materias: | |
Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/78053 |
Aporte de: |
id |
I19-R120-10915-78053 |
---|---|
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 neutral-current four-fermion processes Z boson L3 detector |
spellingShingle |
Ciencias Exactas Física neutral-current four-fermion processes Z boson L3 detector Dova, María Teresa Lacentre, Pablo E. L3 Collaboration Study of neutral-current four-fermion and ZZ production in e+e- collisions at √s = 183 GeV |
topic_facet |
Ciencias Exactas Física neutral-current four-fermion processes Z boson L3 detector |
description |
A study of neutral-current four-fermion processes is performed using a data sample corresponding to 55.3 pb-1 of integrated luminosity collected by the L3 detector at LEP at an average centre-of-mass energy of 183 GeV. The neutral-current four-fermion cross sections for final states with a pair of charged leptons plus jets and with four charged leptons are measured to be consistent with the Standard Model predictions. Events with fermion pair masses close to the Z boson mass are selected in all observable final states and the ZZ production cross section is measured to be <math><mtext>σ</mtext><msub><mi></mi><mn><mtext>ZZ</mtext></mn></msub><mtext>=0.30</mtext><msup><mi></mi><mn><mtext>+0.22</mtext><mspace sp="0.2" width="2px" linebreak="nobreak" is="true"></mspace><mtext>+0.07</mtext></mn></msup><msub><mi></mi><mn><mtext>−0.16</mtext><mspace sp="0.2" width="2px" linebreak="nobreak" is="true"></mspace><mtext>−0.03</mtext></mn></msub></math> pb, in agreement with the Standard Model expectation. No evidence for the existence of anomalous triple gauge boson ZZZ and ZZγ couplings is found and limits on these couplings are set. |
format |
Articulo Articulo |
author |
Dova, María Teresa Lacentre, Pablo E. L3 Collaboration |
author_facet |
Dova, María Teresa Lacentre, Pablo E. L3 Collaboration |
author_sort |
Dova, María Teresa |
title |
Study of neutral-current four-fermion and ZZ production in e+e- collisions at √s = 183 GeV |
title_short |
Study of neutral-current four-fermion and ZZ production in e+e- collisions at √s = 183 GeV |
title_full |
Study of neutral-current four-fermion and ZZ production in e+e- collisions at √s = 183 GeV |
title_fullStr |
Study of neutral-current four-fermion and ZZ production in e+e- collisions at √s = 183 GeV |
title_full_unstemmed |
Study of neutral-current four-fermion and ZZ production in e+e- collisions at √s = 183 GeV |
title_sort |
study of neutral-current four-fermion and zz production in e+e- collisions at √s = 183 gev |
publishDate |
1999 |
url |
http://sedici.unlp.edu.ar/handle/10915/78053 |
work_keys_str_mv |
AT dovamariateresa studyofneutralcurrentfourfermionandzzproductionineecollisionsats183gev AT lacentrepabloe studyofneutralcurrentfourfermionandzzproductionineecollisionsats183gev AT l3collaboration studyofneutralcurrentfourfermionandzzproductionineecollisionsats183gev |
bdutipo_str |
Repositorios |
_version_ |
1764820485324931073 |