| dc.creator | Dova, María Teresa | |
| dc.creator | L3 Collaboration | |
| dc.date | 1994-12-29 | |
| dc.date | 2019-03-26T13:49:45Z | |
| dc.identifier | http://sedici.unlp.edu.ar/handle/10915/73620 | |
| dc.identifier | issn:0370-2693 | |
| dc.description | With a data sample of 86 000 Z → τ+τ−(γ) events collected in 1990 through 1993 we have measured the polarization of τ-leptons as a function of the production polar angle using the following 1-prong τ decay modes: r- ~ e-~evT, r- --+/.t-Vuv~, r- ---+ 7r-(K-)v~, r- ~ p-v, and r- ---+ a~'v, We obtain for the ratio of vector to axial-vector weak neutral couplings for electrons gVe/gAe=0.0791±0.0099(stat)±0.0025 (syst) and taus gVτ/gAτ=0.0752±0.0063 (stat)±0.0045 (syst) consistent with the hypothesis of e - τ universality. Assuming universality of the e - τ neutral current we determine the effective electroweak mixing angle to be sin2 θeffw = 0.2309 ± 0.0016.. | |
| dc.description | Facultad de Ciencias Exactas | |
| dc.format | application/pdf | |
| dc.format | 245-256 | |
| dc.language | en | |
| dc.rights | http://creativecommons.org/licenses/by-nc-sa/4.0/ | |
| dc.rights | Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) | |
| dc.subject | Ciencias Exactas | |
| dc.subject | Física | |
| dc.subject | polarization of τ-leptons | |
| dc.subject | production polar angle | |
| dc.subject | axial-vector | |
| dc.title | A measurement of polarization at LEP | |
| dc.type | Articulo | |
| dc.type | Articulo | |
