We report final results for the D, F, and c+ lifetimes measured with a hybrid emulsion spectrometer in the wide-band neutrino beam at Fermilab. In total, 3886 neutrino and antineutrino interactions were located in the fiducial volume of the emulsion. From these interactions we have unambiguously identified 6 F and 13 c+ decays, for which the fitted lifetimes are (F)=(2.6-0.9+1.6) ×10-13 s and (c+)=(2.0-0.5+0.7)×10-13 s. 28 other decays are consistent with a D+ or D- hypothesis. From these events, we obtain a D lifetime of (11.1-2.9+4.4) × 10-13s.
ASJC Scopus subject areas
- Physics and Astronomy(all)