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Measurement of the e+e- → bƀ and e+e- → cc forward-backward asymmetries at the Z° resonance

Document type: Articulo

Abstract

We have measured the forward-backward asymmetry in e + e- → bƀ and e+e- → cc processes using hadronic events containing muons or electrons. The data sample corresponds to 410 000 hadronic decays of the Z °. From a fit to the single lepton and dilepton p and Pr spectra, we determine Ab6 = 0.086 + 0.0154- 0.007 and Ace = 0.083 + 0.038 + 0.027 at the effective center-of-mass energy qq = 91.24 GeV. These measurements yield a value of the electroweak mixing angle sin 2 0w = 0.2336 + 0.0029.

General information

Issue date: 15 de octubre de 1992
Document language: English
Journal: Physics Letters B; vol. 292, no. 3-4
Origin: Facultad de Ciencias Exactas
ISSN: 0370-2693
Pages: 454-462
xmlui.dri2xhtml.METS-1.0.item-dc-subject: Física ; hadronic events ; muons ; electrons
Subjects: Ciencias Exactas

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Created: 13 de marzo de 2019
Available since: 13 de marzo de 2019
Please, use one of this identificators(URI) for cite o linking this item:
  • http://sedici.unlp.edu.ar/handle/10915/73123
  • https://doi.org/10.1016/0370-2693(92)91203-L

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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)