Search among the 163191 resources available in the repository
dc.date.accessioned | 2019-03-20T14:22:59Z | |
dc.date.available | 2019-03-20T14:22:59Z | |
dc.date.issued | 1995-06-22 | |
dc.identifier.uri | http://sedici.unlp.edu.ar/handle/10915/73374 | |
dc.description.abstract | Total and differential cross sections for the process e+e− → γγ(γ), and the total cross section for the process e+e− → γγγ, are measured at energies around 91 GeV using the data collected with the L3 detector from 1991 to 1993. We set lower limits, at 95% CL, on a contact interaction energy scale parameter Λ > 602 GeV, on the mass of an excited electron and on the QED cut-off parameters Λ+ > 149 GeV and Λ_ > 143 GeV. Upper limits are also set o branching fractions of Z decaying into γγ, π° and ηγ of 5.2 × 10−5, 5.2 × 10−5 and 7.6 × 10−5 respectively. The reactions e+e− → ℓ+ℓ−nγ (ℓ = e, μ, τ) are studied using the data collected from 1990 to 1994. The data are consistent with the QED expectations. | en |
dc.format.extent | 136-144 | es |
dc.language | en | es |
dc.subject | e+e− → γγ(γ) | en |
dc.subject | Física | es |
dc.subject | 91 GeV | en |
dc.subject | lower limits | en |
dc.title | Tests of QED at LEP energies using e+e− → γγ(γ) and e+e− → ℓ+ℓ−γγ | en |
dc.type | Articulo | es |
sedici.identifier.other | https://doi.org/10.1016/0370-2693(95)00527-R | |
sedici.identifier.issn | 0370-2693 | es |
sedici.creator.person | Dova, María Teresa | es |
sedici.creator.person | L3 Collaboration | es |
sedici.subject.materias | Ciencias Exactas | es |
sedici.description.fulltext | true | es |
mods.originInfo.place | Facultad de Ciencias Exactas | es |
sedici.subtype | Articulo | es |
sedici.rights.license | Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) | |
sedici.rights.uri | http://creativecommons.org/licenses/by-nc-sa/4.0/ | |
sedici.description.peerReview | peer-review | es |
sedici.relation.journalTitle | Physics Letters B | es |
sedici.relation.journalVolumeAndIssue | vol. 353, no. 1 | es |