123 research outputs found
Measurement of the beauty production cross-section in 350 GeV/c -Cu interactions
Using a sample of triggered events, produced in --Cu interactions at 350~GeV, we have identified 26 beauty events. The estimated background in this sample is events. From these data, assuming a linear A-dependence, we measure a beauty production cross-section integrated over all of nb/N
WA92: a fixed target experiment to trigger on and identify beauty particle decays
We describe the detectors and trigger system used in the CERN WA92 experiment. The experiment was designed to study the production and decay of beauty particles from 350 GeV/ interactions in copper and tungsten targets. Charged particle tracking is performed using the Omega spectrometer. Silicon microstrip detectors are used to provide precise tracking information in the region of the production and the decay of heavy-flavoured particles and to trigger on the resulting high impact parameter tracks. The precision of vertex reconstruction corresponds to of the mean B-decay proper lifetime. Lepton and high transverse momentum hadron signals are also used in the trigger, which accepts 29\% of B-decays and rejects 98\% of non-beauty interactions
A high temperature structural phase transition in crocoite at 1068K: Crystal structure refinement at 1073K and thermal expansion tensor determination at 1000K
A neutron powder diffraction determination of the thermal expansion tensor of crocoite (PbCrO 4
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