Showing papers by "C. Bradaschia published in 1991"

TL;DR: In this article, the strong coupling constant αs is measured by an analysis of energy-energy correlations (EEC) and the global event shape variables thrust, C-parameter and oblateness.

TL;DR: In this paper, a significant charge asymmetry is observed in the hadronic Z decays with the ALEPH detector at LEP, expressed in terms of the difference in momentum weighted charges in the two event hemispheres.

TL;DR: In this paper, the probability that a hadron which is observed to decay originated as a b hadron was found to be χ = 0.132 −0.026 +0.027.

TL;DR: The average lifetime of B hadrons has been measured by the ALEPH experiment at LEP as discussed by the authors, where events containing b hadrons are selected by the identification of leptons with high transverse momentum in hadronic Z decays, and the lifetime is extracted from a fit to the impact parameter distribution of the lepton tracks.

TL;DR: In this article, events with two leptons and an additional pair of charged particles were studied and the 35 events found show a possible excess in the tau channel compared with the expectation from electroweak processes.