F. I. G. Da Silva; C. R. A. Augusto; C. E. Navia; M. B. Robba
Description:
We report the results from a search for cosmic muon decay through muon nuclear capture process measured at sea level by the Tupi muon telescope. The method denominated “frozen images” has been used and it requires a relatively small active volume, such as a plastic scintillator with its outlying system, a photomultiplier with its power supply. The data acquisition system is constituted on the basis of a 100 MHz oscilloscope with trigger and stop. The method offrozen images allows us to separate the two (ordinary and radiative) muon decay modes in the data set. The muon lifetime as well as the branching ratio for the radiative muon decay are obtained in this survey. They are in relative agreement with the results reported by the Data Particle Group.