Detection of the production and decays of neutral charmed mesons in proton-nucleus interactions at 70 GeV with the SVD-2 facilityстатья
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Дата последнего поиска статьи во внешних источниках: 12 ноября 2013 г.
Аннотация:The results of processing the data of the SERP-E-184 experiment that studied mechanisms
of the production of charmed particles in proton–nucleus interactions at 70 GeV and their decays are reported. The data were obtained in irradiating the SVD-2 active target consisting of carbon, silicon, and lead plates with a proton beam of energy 70 GeV. A signal from the two-body decay of neutral charmed mesons D0 and Dˇ0 is separated. The signal-to-background ratio is (51±17)/(38±13). A detailed simulation of relevant processes on the basis of the FRITIOF and GEANT codes made it possible to find meson-detection efficiencies and to evaluate the charm-production cross section at this energy: σ(ccˆ)=7.1±2.4(stat.)± 1.4(syst.) µb/nucleon.