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Angular analysis of the muon pair asymmetry at LEP 1
Wilson, Graham Wallace OPAL Collaboration Abbiendi, G. Ainsley, C. Åkesson, P. F. Alexander, G. Allison, J. Anagnostou, G. Anderson, K. J. Arcelli, S.
Wilson, Graham Wallace
OPAL Collaboration
Abbiendi, G.
Ainsley, C.
Åkesson, P. F.
Alexander, G.
Allison, J.
Anagnostou, G.
Anderson, K. J.
Arcelli, S.
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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.
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2001-09-06
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Elsevier
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Abbiendi, G. et al. (2001). "Angular analysis of the muon pair asymmetry at LEP 1." Physics Letters B, 516(1-2):1-20. http://www.dx.doi.org/10.1016/S0370-2693(01)00896-6.