Showing papers by "T. J. Sloan published in 1991"
University of Sheffield1, University of Warsaw2, Yale University3, CERN4, University of Liverpool5, Max Planck Society6, University of Oxford7, Laboratoire d'Annecy-le-Vieux de physique des particules8, Lancaster University9, University of Freiburg10, University of Turin11, Uppsala University12, RWTH Aachen University13, University of Mons14
TL;DR: In this paper, the multiplicities of forward produced hadrons in deep inelastic muon scattering on nuclear targets have been compared with those from deuterium, and the ratios are observed to increase towards unity as the virtual photon energy increases with no significant dependence on the other muon kinematic variables.
Abstract: Differential multiplicities of forward produced hadrons in deep inelastic muon scattering on nuclear targets have been compared with those from deuterium. The ratios are observed to increase towards unity as the virtual photon energy increases with no significant dependence on the other muon kinematic variables. The hadron transverse momentum distribution is observed to be broadened in nuclear targets. The dependence on the remaining hadron variables is investigated and the results are discussed in the framework of intranuclear interaction models and in the context of the EMC effect.
85 citations
TL;DR: In this article, the authors measured the charged particle multiplicity distribution of hadronic Z decays using the ALEPH detector at LEP and found that the distribution has a mean 〈n〉=20.85± 0.24 and a dispersion D=6.34±0.12.
76 citations
TL;DR: In this article, an analysis of global event-shape variables has been carried out for the reaction e+e−→Z0→hadrons to measure the strong coupling constant αs.
53 citations
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.
50 citations
TL;DR: In this paper, the polarization of τ leptons produced in the reaction e+e−→τ+τ− at the Z resonance has been measured using the τ decay modes eνeντ, μνμντ and a1ντ.
43 citations
TL;DR: In this article, three signals of charm production were observed: two from the exclusive decays D ° → K − π + and D ∗+ → D °π + → K− π+ + π+, and one in the transverse-momentum distribution of soft hadrons relative to the nearest jet.
38 citations
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.
37 citations
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.
24 citations
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.
20 citations
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.
16 citations
02 Nov 1991
TL;DR: In this article, the authors report on progress with Schottky diode and p-i-n diode GaAs detectors for minimum ionizing particles for the Large Hadron Collider (LHC).
Abstract: The authors report on progress with Schottky diode and p-i-n diode GaAs detectors for minimum ionizing particles. The radiation hardness and potential speed of simple diodes are shown to be more than competitive with silicon detectors. A discussion is given of the present understanding of the charge transport mechanism in the detectors as it influences their charge collection efficiency. Early results from microstrip detectors which are relevant for high radiation regions of Large Hadron Collider (LHC) detectors near the beam pipe and in the forward region are also described. The authors have established the ability of GaAs Schottky diode detectors to tolerate radiation loads at the level expected in more than one year of running at a radial distance of only a few cm from the intersection point of the proposed LHC collider at nominal luminosity. The diode output signal of only a few nanoseconds is very satisfactory for the new colliders. >
TL;DR: A search for events of the type e + e − →l + l − X 0, where X 0 can be any weakly interacting particle which couples to the Z, has been performed with the ALEPH detector at LEP, by searching for acollinear lepton pairs as discussed by the authors.