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...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Dova, María Teresa, Lacentre, Pablo E., L3 Collaboration
Formato:	Articulo
Lenguaje:	Inglés
Publicado:	1999
Materias:	Ciencias Exactas Física neutral-current four-fermion processes Z boson L3 detector
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/78053
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

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

Study of neutral-current four-fermion and ZZ production in e+e- collisions at √s = 183 GeV

Ejemplares similares