Angular analysis of the muon pair asymmetry at LEP1

G Abbiendi, Shaun Ashby, Ian Bloodworth, Paul Bright-Thomas, David Charlton, Christopher Hawkes, Roger Homer, Predrag Jovanovic, Alun Lloyd, Thomas McMahon, Stephen O'Neale, Scott Talbot, Miriam Watson, Peter Watkins, Alan Watson, Nigel Watson, John Wilson

Research output: Contribution to journalArticle

2 Citations (Scopus)


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. (C) 2001 Elsevier Science B.V. All rights reserved.
Original languageEnglish
Pages (from-to)1-20
Number of pages20
JournalPhysics Letters B
Issue number1-2
Publication statusPublished - 6 Sept 2001


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