Angular Analysis of the Muon Pair Asymmetry at LEP 1
High Energy Physics - Experiment
2010-05-28 v1
Abstract
Data on muon pair production obtained by the OPAL collaboration at centre of mass energies near the Z peak are analysed. Small angular mismatches between the directions of the two muons are used to assess the effects of initial state photon radiation and initial-final-state radiation interference on the forward-backward asymmetry of muon pairs. The dependence of the asymmetry on the invariant mass of the pair is measured in a model-independent way. Effective vector and axial-vector couplings of the Z boson are determined and compared to the Standard Model expectations.
Keywords
Cite
@article{arxiv.hep-ex/0107046,
title = {Angular Analysis of the Muon Pair Asymmetry at LEP 1},
author = {The OPAL collaboration and G. Abbiendi},
journal= {arXiv preprint arXiv:hep-ex/0107046},
year = {2010}
}
Comments
31 pages, 8 figures, Accepted by Physics Letters B