Angular analysis of the muon pair asymmetry at LEP I.

Bailey, Ian Richard and Kartvelishvili, Vakhtang (2001) Angular analysis of the muon pair asymmetry at LEP I. Physics Letters B, 516 (1-2). pp. 1-20.

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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.

Item Type:
Journal Article
Journal or Publication Title:
Physics Letters B
Additional Information:
The method originated with a co-author but was developed by Kartvelishvili and applied to OPAL data; he did 95% of the analysis and was the main author. This double-differential angular analysis of muon pair production provided an independent way of measuring the fundamental couplings of the Z boson. RAE_import_type : Journal article RAE_uoa_type : Physics
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Deposited On:
02 Apr 2008 14:05
Last Modified:
15 Jul 2020 02:12