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Fermion pair production in e+e- collisions at 189–209 GeV and constraints on physics beyond the standard model

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Abstract

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-, μ+μ-, τ+τ-, qq̄, bb̄ and cc̄ 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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Correspondence to R. Tenchini.

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Dedicated to the memory of John Strong who died on July 31, 2006

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Schael, S., Barate, R., Brunelière, R. et al. Fermion pair production in e+e- collisions at 189–209 GeV and constraints on physics beyond the standard model. Eur. Phys. J. C 49, 411–437 (2007). https://doi.org/10.1140/epjc/s10052-006-0156-8

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  • DOI: https://doi.org/10.1140/epjc/s10052-006-0156-8

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