Measurement and interpretation of fermion-pair production at LEP energies from 130 to 172 GeV

  • The DELPHI Collaboration
  • P. Abreu et al.
Experimental physics


The data collected with the DELPHI detector at centre-of-mass energies between 130 and 172 GeV, during LEP operation in 1995 and 1996, have been used to determine the hadronic and leptonic cross-sections and leptonic forward–backward asymmetries. In addition, the cross-section ratios and forward–backward asymmetries for flavour-tagged samples of light (uds), c and b quarks have been measured. No significant deviations from the Standard Model expectations are found. The results are interpreted by performing S-matrix fits to these data and to the data collected previously at the energies near the \({\rm Z}^0\) resonance peak (88-93 GeV). The results are also interpreted in terms of physics beyond the Standard Model: contact interactions, R-parity violating SUSY particle exchange and of possible Z\(^{'}\) bosons.


Resonance Peak Contact Interaction Particle Exchange SUSY Particle Model Expectation 
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Copyright information

© Springer-Verlag Berlin Heidelberg 1999

Authors and Affiliations

  • The DELPHI Collaboration
  • P. Abreu et al.
    • 1
  1. 1.LIP, IST, FCUL - Av. Elias Garcia, 14-1°, 1000 Lisboa Codex, Portugal PT

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