Showing papers by "Yang Gao published in 1993"

TL;DR: In this paper, a measurement of the partial width ratio using a method which tags the decays through the lifetimes of the produced heavy hadrons is presented, which relies on the tracking precision afforded by a double-sided silicon vertex detector.

TL;DR: In this paper, a data sample corresponding to about 1 233 000 hadronic Z decays collected by the ALEPH experiment at LEP was used to search for the standard model Higgs boson.

TL;DR: In this paper, a data sample corresponding to 1.23 million hadronic Z decays collected by the ALEPH detector at LEP has been searched for signals of the production of a non-minimal CP-even Higgs boson h in the reaction e + e − → hZ ∗.

TL;DR: In this paper, an analysis of γγ interactions using untagged hadronic data obtained by the ALEPH detector at LEP is performed using a model based on the vector meson dominance mechinism (VDM).

TL;DR: In this paper, the branching fraction of Z → b b relative to all hadronic decays of the Z has been measured using event shape variables to preferentially select Z→ b b events.

TL;DR: In a sample of about 1.1 million hadronic Z decays recorded with the ALEPH detector during the 1990-1992 running of LEP, two unambiguous BS meson candidates were observed as discussed by the authors.

TL;DR: A measurement of the average lifetime of b hadrons has been performed with dipole method on a sample of 260 000 hadronic Z decays recorded with the ALEPH detector during 1991 as mentioned in this paper.

TL;DR: In this article, a search for high mass photon pairs from the processes e + e − → f f γγ (f = e, μ, τ, v and q) with the ALEPH detector is reported.

TL;DR: This work defines three other principles namely: adhesion principle, reformulation principle, memorization principle and presents the possible applications of the new model: MIRABEL, which can help in the description of information retrieval problem from.