8 research outputs found
Changes in leaf Delta13C of herbarium plant species during the last 3 centuries of CO2 increase
Does physical activity reduce the risk of cardiovascular disease in overweight and obese individuals?
A review of seagrass detection, mapping and monitoring applications using acoustic systems
Low mass lepton pair production in p - Be collisions at 450-GeV/c
We report on the production of low-mass electron pairs and muon pairs in p-Be collisions at 450 GeV/c at the CERN SPS. For both electron and muon pairs the low-mass spectrum can be explained satisfactorily by lepton pairs from hadronic decays, and there is no need to invoke any ''unconventional'' source. The normalisation of the major hadronic sources is set by the data. The upper limit, at 90% confidence level, on any new source of lepton pairs is similar to 20% of the hadronic decay contribution for muons, and similar to 40% for electrons
A Search for weakly interacting neutral particles in missing energy events in 450-GeV/c p N collisions
We have measured the inclusive cross-section as a function of missing energy, due to the production of neutrinos or new weakly interacting neutral particles in 450 GeV/c proton-nucleus collisions, using calorimetric measurements of visible event energy. Upper limits are placed on the production of new particles as a function of their energy. These upper limits are typically an orde