Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
2000-11-03
Physics
High Energy Physics
High Energy Physics - Experiment
8 pages Latex with 7 eps figures, submitted to EPJD
Scientific paper
The intrinsic decay rate of orthopositronium (o-Ps) formed in SiO_2 powder was measured using a modified method which determined the time dependence of the pick-off annihilation rate using high-energy-resolution germanium detectors. That is, the main systematic error due to thermalization was accounted for and integrated into the time spectrum fitting procedure. The averaged value was found to be lambda_(o-Ps)=7.0399+0.0020-0.0021(stat.) +-0.0015(sys.) mu s^{-1}, which agrees well with the O(alpha^2) QED prediction; varying 2.8-4.2 experimental standard deviations from other measurements.
Asai Shinichiro
Jinnouchi Osamu
Kobayashi Tatsuo
No associations
LandOfFree
Measurement of Orthopositronium Decay Rate Using SiO2 Powder: Integration of Thermalization into Time Spectrum does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Measurement of Orthopositronium Decay Rate Using SiO2 Powder: Integration of Thermalization into Time Spectrum, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Measurement of Orthopositronium Decay Rate Using SiO2 Powder: Integration of Thermalization into Time Spectrum will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-111425