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Study of Fermion Pair Production in $e^{+}e^{-}$ Collisions at 130-183 GeV (2005)

Abstract
The cross sections and forward-backward asymmetries of hadronic and leptonic events produced in e+e- collisions at centre-of-mass energies of 130-183 GeV are presented. Results for ee, mumu, tautau, qq, bb and cc production show no significant deviation from the Standard Model predictions. This enable constraints to be set upon physics beyond the Standard Model such as four-fermion contact interactions, leptoquarks, Z' bosons and R-parity violating squarks and sneutrinos. Limits on the energy scale Lambda of eeff contact interactions are typically in the range from 2-10 TeV. Limits on R-parity violating sneutrinos reach masses of a few hundred GeV for large values of their Yukawa couplings.

Publication details
Download http://hal.in2p3.fr/in2p3-00014505/en/
Publisher HAL - CCSD
Repository CCSd/HAL : e-articles server (based on gBUS) (France)
Keywords Physics/High Energy Physics - Experiment
Type peer-reviewed article
Relation http://hal.archives-ouvertes.fr/docs/00/01/81/18/PDF/democrite-00014505.pdf

Cited publications (14)
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Measurement of the absolute luminosity with the ALEPH detector (1991)
The Monte Carlo program KORALZ, version 3.8, for the lepton or quark pair production at LEP/SLC energies (1991)
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A Measurement of R(b) using a lifetime mass tag (1997)
Limit on B$^{0}_{s}$ oscillation using a jet charge method (1995)
Measurements of the Tau Leptonic Branching Ratios (1997)