A direct determination of the number of light neutrino families from e<SUP>+</SUP> e<SUP>-</SUP> → vvγ at LEP
The L3 detector at LEP has been used to determine the number of light neutrino families by measuring the cross section of single photon even in e+e - collisions at energies near the Z° resonance. We have observed 61 single photon candidates with more than 1.5 GeV of deposited energy in the barrel el...
| Autores principales: | , |
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| Formato: | Articulo |
| Lenguaje: | Inglés |
| Publicado: |
1992
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| Materias: | |
| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/74004 |
| Aporte de: |
| id |
I19-R120-10915-74004 |
|---|---|
| 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 L3 detector LEP neutrino families |
| spellingShingle |
Ciencias Exactas L3 detector LEP neutrino families Dova, María Teresa L3 Collaboration A direct determination of the number of light neutrino families from e<SUP>+</SUP> e<SUP>-</SUP> → vvγ at LEP |
| topic_facet |
Ciencias Exactas L3 detector LEP neutrino families |
| description |
The L3 detector at LEP has been used to determine the number of light neutrino families by measuring the cross section of single photon even in e+e - collisions at energies near the Z° resonance. We have observed 61 single photon candidates with more than 1.5 GeV of deposited energy in the barrel electromagnetic calorimeter, for a total integrated luminosity of 3.0 pb-1. From a likelihood fit to the single photon cross sections, we determine Nv = 3.24 ± 0.46 (statistical) _+ 0.22 (systematic). |
| format |
Articulo Articulo |
| author |
Dova, María Teresa L3 Collaboration |
| author_facet |
Dova, María Teresa L3 Collaboration |
| author_sort |
Dova, María Teresa |
| title |
A direct determination of the number of light neutrino families from e<SUP>+</SUP> e<SUP>-</SUP> → vvγ at LEP |
| title_short |
A direct determination of the number of light neutrino families from e<SUP>+</SUP> e<SUP>-</SUP> → vvγ at LEP |
| title_full |
A direct determination of the number of light neutrino families from e<SUP>+</SUP> e<SUP>-</SUP> → vvγ at LEP |
| title_fullStr |
A direct determination of the number of light neutrino families from e<SUP>+</SUP> e<SUP>-</SUP> → vvγ at LEP |
| title_full_unstemmed |
A direct determination of the number of light neutrino families from e<SUP>+</SUP> e<SUP>-</SUP> → vvγ at LEP |
| title_sort |
direct determination of the number of light neutrino families from e<sup>+</sup> e<sup>-</sup> → vvγ at lep |
| publishDate |
1992 |
| url |
http://sedici.unlp.edu.ar/handle/10915/74004 |
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Repositorios |
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