Short-lived particles produced in association with muons have been observed in the interactions of 350-GeV/c protons with neon in a high-resolution streamer chamber. The characteristics of these events are consistent with the expected properties of charmed particles if the average lifetime lies between 10-13 and 2×10-12 sec. With the assumption that the observed events are mainly D± mesons with lifetimes of approximately 10-12 sec, the production cross section is estimated to lie between 20 and 50 μb per nucleon.
ASJC Scopus subject areas
- Physics and Astronomy(all)