17 research outputs found
An experimental study of noise in mid-infrared quantum cascade lasers of different designs
A emergência dos conselhos setoriais na agroindústria brasileira: gênese de uma governança mais ampla?
Changes in weight, physical activity, sedentary behaviour and dietary intake during the transition to higher education: a prospective study
Mushrooms of Hawaii: An Identification Guide by D. E. Hemmes and D. E. Desjardin (2002). Pp. 224. ISBN 1-58008-339-0. Ten Speed Press, Berkeley, California 94707. Price $39.95 (paperback).
An overview of the “Positive Action for Today's Health” (PATH) trial for increasing walking in low income, ethnic minority communities
The Impact of Social Support on Outcomes in Adult Patients with Type 2 Diabetes: A Systematic Review
The regions important for the activator and repressor functions of herpes simplex virus type 1 alpha protein ICP27 map to the C-terminal half of the molecule
PRODUCTION OF STRANGE B-BARYONS DECAYING INTO XI-/+-L-/+ PAIRS AT LEP
An excess of events containing, in a jet, a samesign Ξ∓-ℓ∓ pair as compared to those with an oppositesign Ξ∓-ℓ± pair has been observed in an analysis of 1.7 million hadronic Z0 decays collected by the DELPHI detector at LEP between 1991 and 1993 inclusive. The probability for this signal to come from non B-baryon decays is less than 5×10-4. The measured production fraction corresponds to:[Figure not available: see fulltext.] per lepton species, averaged for electrons and muons and assuming that the two channels have an equal contribution. Semileptonic decays of Λb baryons can account for less than 10% of these events and the major part of the signal has to originate from Ξb semileptonic decays. Using the subsample of these events where the Ξ∓ trajectory has been measured in the Vertex Detector, the lifetime of B-baryons producing a Ξ∓ in their semileptonic decay final state is found to be: {Mathematical expression} © 1995 Springer-Verlag