Search results for "Systematic Uncertainty Standard Model Prediction Aleph Collaboration Hadronic Cross Section Tematic Uncertainty"

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

2006

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.

Particle physicsPhysics and Astronomy (miscellaneous)Physics beyond the Standard ModelElectron–positron annihilationFOS: Physical sciences01 natural sciences7. Clean energyStandard ModelHigh Energy Physics - ExperimentNuclear physicsHigh Energy Physics - Experiment (hep-ex)0103 physical sciences[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]Leptoquark010306 general physicsEngineering (miscellaneous)BosonPhysicsSystematic Uncertainty Standard Model Prediction Aleph Collaboration Hadronic Cross Section Tematic Uncertainty010308 nuclear & particles physicsHigh Energy Physics::PhenomenologyFermionSupersymmetryPair productionHigh Energy Physics::ExperimentParticle Physics - Experiment

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PEPhysical Sciences and Engineering
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