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dc.date.accessioned 2019-07-15T17:26:21Z
dc.date.available 2019-07-15T17:26:21Z
dc.date.issued 2000-02-10
dc.identifier.uri http://sedici.unlp.edu.ar/handle/10915/78160
dc.description.abstract The three different helicity states of W± bosons, produced in the reaction e+e−→W+W−→ℓνqq̄ are studied using leptonic and hadronic W decays at √s = 183 GeV and 189 GeV. The W polarisation is also measured as a function of the scattering angle between the W- and the direction of the e- beam. The analysis demonstrates that W bosons are produced with all three helicities, the longitudinal and the two transverse states. Combining the results from the two center-of-mass energies and with leptonic and hadronic W decays, the fraction of longitudinally polarised W± bosons is measured to be 0.261 ± 0.051 (stat.) ± 0.016 (syst.) in agreement with the expectation from the Standard Model. en
dc.format.extent 194-204 es
dc.language en es
dc.subject Física es
dc.subject W boson en
dc.subject W polarisation en
dc.subject W decay en
dc.subject standar model es
dc.title Direct observation of longitudinally polarised W± bosons en
dc.type Articulo es
sedici.identifier.other https://doi.org/10.1016/S0370-2693(99)01489-6
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. 474, no. 1–2 es


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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)