Showing papers by "Barry Blumenfeld published in 1990"
01 Apr 1990-Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment
TL;DR: The L3 experiment as discussed by the authors is one of the six large detectors designed for the new generation of electron-positron accelerators, which is the only detector that concentrates its efforts on limited goals of measuring electrons, muons and photons.
Abstract: The L3 experiment is one of the six large detectors designed for the new generation of electron-positron accelerators. It is the only detector that concentrates its efforts on limited goals of measuring electrons, muons and photons. By not attempting to identify hadrons, L3 has been able to provide an order of magnitude better resolution for electrons, muons and photons. Vertices and hadron jets are also studied. The construction of L3 has involved much state of the art technology in new principles of vertex detection and in new crystals for large scale electromagnetic shower detection and ultraprecise muon detection. This paper presents a summary of the construction of L3.
505 citations
TL;DR: In this article, it is shown that the goal of space valorization cannot be considered without relational investment between the partners and their accumulated background, and that the capacity of the territory to solve these problems will depend closely on the richness of the network and co-operations which it shelters or it will suggest.
73 citations
TL;DR: In this article, a search for the neutral Higgs boson using the processes Z 0 → H 0 e + e −, Z0 → H ε + ε, Z ε → H τ + τ −, Zε → ε v v, and Z 0→ H 0 q q q, is performed on data collected by the ALEPH detector corresponding to about 11 550 events of Z0→ hadrons.
68 citations
TL;DR: In this paper, a precise measurement of the cross section for e+e−→Z0→hadrons with the L3 detector at LEP was made, covering the s range from 88.28 to 95.04 GeV.
58 citations
TL;DR: In this article, the authors measured the properties of Z0 → b b decays using a sample of 944 inclusive muon events, corresponding to 18 000 hadron events obtained with the L3 detector at LEP.
48 citations
TL;DR: In this article, the authors present the results from a search for the light neutral scalar Higgs boson h° and the pseudoscalar higgs Boson A° of the minimal super-symmetric standard model.
44 citations
TL;DR: In this paper, the authors measured the partial widths of the Z 0 into lepton pairs, and the forward-backward charge asymmetry for the process e + e − → μ + μ − using the L3 detector at LEP.
34 citations
TL;DR: In this article, the authors measured the cross section for e + e − → hadrons over the center of mass energy range of the Z 0 peak, from 88.22 to 95.03 GeV.
26 citations
TL;DR: In this article, the rates and the forward-backward asymmetry of l+l− from Z0→l+l − (where l=μ, τ) were measured with the L3 detector.
24 citations
TL;DR: In this article, the neutral Higgs boson produced in the decays of the Z 0 through the process Z 0 → H 0 l + l − in the mass range M H 0 0 → hadrons was excluded.
22 citations
TL;DR: In this article, the forward-backward asymmetry in Z 0 → b b decays using hadronic events containing muons and electrons was measured using the single and dilepton p and P⊥ spectra.
TL;DR: In this article, the authors measured the cross-section of the reaction e + e − → γγ at center of mass energies around the Z 0 mass and found upper and lower bounds of 2.9 × 10 −4, 2.1×10 −4 and 1.2×10−4, respectively.
TL;DR: In this article, the authors search for excited electrons and muons from Z 0 decay in the channels ee→eeγ, ee →eeγγ, Ee→(e)eγ, (e)→μμγ, and Ee →μγγ using L3 detector at LEP.
TL;DR: In this article, the authors have searched for charged and neutral leptons and excluded all masses below 46.4 GeV and below 45.1 GeV (majorana) for stable Dirac neutrinos, except if both masses are larger than 42.8 GeV.
TL;DR: In this article, the pair produced charged Higgs particles in the decays of Z0 were searched for the decay channels of H + H − →τ + ντ − ν, H + h − → τν cs and H + n − → c s c s.
TL;DR: In this paper, the excited electron neutrino produced from Z 0 decays in the channel e + e − →νν ∗ using the L3 detector at LEP.
TL;DR: In this paper, the authors measured the partial widths for the three reactions e + e − → Z 0 → e+ e −, μ + μ −, τ + τ −, and τ+ τ − data, the differential cross section as a function of polar angle for the electron data, and the forward-backward asymmetry for the muon data.