0000000000646107

AUTHOR

P J Dornan

showing 2 related works from this author

Search for scalar leptons in e+e- collisions at centre-of-mass energies up to 209 GeV

2002

A search for selectron, smuon and stau pair production is performed with the data collected by the ALEPH detector at LEP at centre-of-mass energies up to 209 GeV. The numbers of candidate events are consistent with the background predicted by the Standard Model. Final mass limits from ALEPH are reported.

Nuclear and High Energy PhysicsAlephParticle physics[PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex]Electron–positron annihilationMonte Carlo methodFOS: Physical sciences01 natural sciences7. Clean energyHigh Energy Physics - ExperimentNuclear physicsPHYSICSHigh Energy Physics - Experiment (hep-ex)MONTE-CARLO0103 physical sciences[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]010306 general physicsPhysicsResearch Groups and Centres\Physics\Low Temperature Physics010308 nuclear & particles physicsFaculty of Science\PhysicsHigh Energy Physics::PhenomenologyScalar (physics)SupersymmetrySelectron tubePair productionHigh Energy Physics::ExperimentParticle Physics - ExperimentLepton
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Z production cross sections and lepton pair forward-backward asymmetries

1994

Precise values of the Z resonance cross sections and lepton pair forward-backward asymmetries are measured from a sample of 1.3 million Z decays into hadrons and charged leptons taken with the ALEPH detector at LEP. A silicon-tungsten luminosity calorimeter was installed in ALEPH in 1992, permitting the determination of the absolute luminosity to a systematic precision of 0.15% (experimental) and 0.25% (theoretical). This is combined with a better understanding of the hadronic event selection and an improved tau pair selection. Including the ALEPH results of the past three years one obtains sigma(h)0 = (41.60 +/- 0.16) nb, and R(l) = 20.69 +/- 0.09. The corresponding number of light neutrin…

PhysicsAlephParticle physicsLuminosity (scattering theory)Physics and Astronomy (miscellaneous)010308 nuclear & particles physicsElectron–positron annihilationPhysicsHigh Energy Physics::PhenomenologyWeinberg angle01 natural sciencesNuclear physicsALEPH Experiment0103 physical sciences[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]High Energy Physics::ExperimentNeutrino010306 general physicsEngineering (miscellaneous)ALEPH experimentParticle Physics - ExperimentLeptonBhabha scattering
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