Upload resources

Upload your works to SEDICI to increase its visibility and improve its impact

 

A direct determination of the number of light neutrino families from e+ e- → vvγ at LEP

Document type: Articulo

Abstract

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).

General information

Issue date: 23 de enero de 1992
Document language: English
Journal: Physics Letters B; vol. 275, no. 1-2
Origin: Facultad de Ciencias Exactas
ISSN: 0370-2693
Pages: 209-221
xmlui.dri2xhtml.METS-1.0.item-dc-subject: L3 detector ; LEP ; neutrino families
Subjects: Ciencias Exactas

Download Files

Thumbnail
Documento completo
Download file (889.4Kb) - PDF
 
Created: 9 de abril de 2019
Available since: 9 de abril de 2019
Please, use one of this identificators(URI) for cite o linking this item:
  • http://sedici.unlp.edu.ar/handle/10915/74004
  • https://doi.org/10.1016/0370-2693(92)90877-7

    • This item appears in the following Collection(s)

    Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) Except where otherwise noted, this item's license is described as Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)