Measurement and Interpretation of Fermion-Pair Production at LEP Energies of 183 and 189 GeV
The DELPHI Collaboration, P. Abreu, et al
TL;DR
This paper reports measurements of fermion-pair production at LEP energies of 183 and 189 GeV, analyzing cross-sections and asymmetries to test the Standard Model and search for new physics phenomena.
Contribution
It provides precise measurements of fermion-pair production and sets limits on contact interactions, SUSY particles, Z' bosons, and extra-dimensional gravity.
Findings
Measured fermion-pair cross-sections and asymmetries at 183 and 189 GeV.
Set limits on contact interactions and new physics models.
No significant deviations from the Standard Model observed.
Abstract
An analysis of the data collected in 1997 and 1998 with the DELPHI detector at e+e- collision energies close to 183 and 189 GeV was performed in order to extract the hadronic and leptonic fermion-pair cross-sections, as well as the leptonic forward-backward asymmetries and angular distributions. The data are used to put limit on contact interactions between fermions, the exchange of R-parity violating SUSY sneutrinos, Z' bosons and the existence of gravity in extra dimensions.
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