A measurement of the total charm cross section in 200 and 360 gev/c pn interactions using a holographic bubble chamber

We present results from the first holographic bubble chamber experiment. Using topological information on the events observed in the heavy liquid bubble chamber HOBC, we have determined a total charm pair produc-tion cross section of (24.6ts+12.0 -8.3) μb and (3.9+2 -1:5 9) /μb in 360GeV/c and 200 GeV/c proton-nucleon interactions respectively. For these estimates we assumed a linear dependence of the charm cross section on the atomic number A. © 1986 IOP Publishing Ltd.SCOPUS: ar.jinfo:eu-repo/semantics/publishe

The location and analysis of neutrino interactions in photographic emulsion

A stack of nuclear emulsion pellicles of total volume 10 litres was placed, together with two spark chambers in the neutrino beam of the CERN proton synchrotron. The tracks of secondary particles from neutrino interactions in the emulsion were observed in the spark chamber. The spark chamber tracks were used to locate the tracks produced by the same particles in the emulsion. These tracks were then followed back in the emulsion to the neutrino interaction in which they originate. Of a total of seven neutrino interactions expected to be produced in the emulsion stack during this exposure four were located in this way and their characteristics studied. © 1965 Società Italiana di Fisica.SCOPUS: ar.jinfo:eu-repo/semantics/publishe