Double semi-leptonic charm decay in helios-I 450 GeV/c p-Be data. Appendix 1.

摘要

Data taken in 1989 by HELIOS-I (NA34) at the CERN SPS (450 GeV/c proton beam on Be target) have been examined for e(sup (plus minus)) (mu)(sup (minus plus)) or (mu)(sup (plus minus)) (mu)(sup (minus plus)) pairs with associated missing energy. Such pairs arise from semi-leptonic decay of both members of a c(bar c) pair. The e(mu) and (mu)(mu) samples are consistent with expectations from charm decay, allowing a quantitative limit to be placed on other physics. (ERA citation 18:025034)