Fermion pair production in e+e- collisions at 189-209 GeV and constraints on physics beyond the Standard Model

Details Fermion pair production in e+e- collisions at 189-209 GeV and constraints on physics beyond the Standard Model Fermion pair production in e+e- collisions at 189-209 GeV and constraints on physics beyond the Standard Model

2006-09-26

arxiv.org/abs/hep-ex/0609051v1

Eur.Phys.J.C49:411-437,2007

Physics

High Energy Physics

High Energy Physics - Experiment

to be published in The European Physical Journal C

Scientific paper

10.1140/epjc/s10052-006-0156-8

Cross sections, angular distributions and forward-backward asymmetries are presented, of two-fermion events produced in e+e- collisions at centre-of-mass energies from 189 to 209 GeV at LEP, measured with the ALEPH detector. Results for e+e-, mu+mu-, tau+tau-, qq, bb and cc production are in agreement with the Standard Model predictions. Constraints are set on scenarios of new physics such as four-fermion contact interactions, leptoquarks, Z' bosons, TeV-scale quantum gravity and R-parity violating squarks and sneutrinos.

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