The pair production of the lightest scalar Higgs boson, h, and a pseudoscalar Higgs boson, A, was searched for in a data sample containing 10 000 hadronic Z 0 decays. The search involved both leptonic...
Limits on Z decay branching ratios into neutralinos are reported. They were obtained from searches for monojets, acoplanar jets, acoplanar lepton pairs, single photons and acoplanar photon pairs as si...
A search has been made for a very light Higgs boson in the processes e + e - → e + e - H and e + e - →μ + μ - H using data collected by ALEPH at the LEP e + e - collider at centre of mass energies clo...
A search for the neutral Higgs boson in the mass range above 11 GeV (above the H 0 →b b threshold), using the process Z 0 →H 0 e + e − , Z 0 →H 0 μ + μ − and Z 0 → H 0 v v , is performed on data colle...
The light scalar Higgs boson h and the pseudoscalar Higgs boson A of the minimal supersymmetric standard model have been searched for in the processes e + e − → hf f and e + e − →hA using data collect...
We have performed a search for supersymmetric particles using acoplanar pairs of oppositely-charged particles in decays of the Z 0 . In 0.53 pb −1 of integrated luminosity near the Z 0 peak, we observ...
We have searched for Z 0 decays into acoplanar pairs of leptons or jets. The data were recorded with the OPAL detector during an energy scan around the Z 0 peak and correspond to about 17000 produced ...
We have searched for scalar muons μ , scalar electrons ẽ, and winos W̃ from the reactions e + e − → e ̃ + e ̃ − , μ + μ − , W ̃ + W ̃ − at √s ∼ 91 GeV with an integrated luminosity of 157 nb −1 . We h...
An analysis of pp¯ collision events at √s =1.8 TeV with jets and large missing transverse energy finds no event with missing transverse energy >40 GeV. This result yields a 90%-C.L. limit on the cross...
