Light resonances in K<SUP>0</SUP><SUB>S</SUB>K±π∓ and ηπ+π− final states in γγ collisions at LEP

The e+e− → e+e−K0 SK±π∓ and e+e− → e+e−ηπ+π− final states are studied with the L3 detector at LEP using data collected at centre-of-mass energies from 183 GeV up to 202 GeV. The mass spectrum of the K0 SK±π∓ final state shows an enhancement around 1470 MeV, which is identified with the pseudoscalar...

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Detalles Bibliográficos
Autores principales: Dova, María Teresa, L3 Collaboration
Formato: Articulo
Lenguaje:Inglés
Publicado: 2001
Materias:
Ciencias Exactas
Física
L3 detector at LEP
centre-of-mass energies
mass spectrum
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/75729
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-75729
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
L3 detector at LEP
centre-of-mass energies
mass spectrum
spellingShingle Ciencias Exactas
Física
L3 detector at LEP
centre-of-mass energies
mass spectrum
Dova, María Teresa
L3 Collaboration
Light resonances in K<SUP>0</SUP><SUB>S</SUB>K±π∓ and ηπ+π− final states in γγ collisions at LEP
topic_facet Ciencias Exactas
Física
L3 detector at LEP
centre-of-mass energies
mass spectrum
description The e+e− → e+e−K0 SK±π∓ and e+e− → e+e−ηπ+π− final states are studied with the L3 detector at LEP using data collected at centre-of-mass energies from 183 GeV up to 202 GeV. The mass spectrum of the K0 SK±π∓ final state shows an enhancement around 1470 MeV, which is identified with the pseudoscalar meson η(1440). This state is observed in γ γ collisions for the first time and its two-photon width is measured to be Γγ γ (η(1440)) × BR(η(1440) → KKπ ) = 212 ± 50 (stat.) ± 23 (sys.) eV. Clear evidence is also obtained for the formation of the axial vector mesons f1(1420) and f1(1285). In the ηπ+π− channel the f1(1285) is observed, and upper limits for the formation of η(1440) and η(1295) are obtained.
format Articulo
Articulo
author Dova, María Teresa
L3 Collaboration
author_facet Dova, María Teresa
L3 Collaboration
author_sort Dova, María Teresa
title Light resonances in K<SUP>0</SUP><SUB>S</SUB>K±π∓ and ηπ+π− final states in γγ collisions at LEP
title_short Light resonances in K<SUP>0</SUP><SUB>S</SUB>K±π∓ and ηπ+π− final states in γγ collisions at LEP
title_full Light resonances in K<SUP>0</SUP><SUB>S</SUB>K±π∓ and ηπ+π− final states in γγ collisions at LEP
title_fullStr Light resonances in K<SUP>0</SUP><SUB>S</SUB>K±π∓ and ηπ+π− final states in γγ collisions at LEP
title_full_unstemmed Light resonances in K<SUP>0</SUP><SUB>S</SUB>K±π∓ and ηπ+π− final states in γγ collisions at LEP
title_sort light resonances in k<sup>0</sup><sub>s</sub>k±π∓ and ηπ+π− final states in γγ collisions at lep
publishDate 2001
url http://sedici.unlp.edu.ar/handle/10915/75729
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