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Author Boggild, J. K. ♦ Hansen, K. H. ♦ Hooper, J. E. ♦ Scharff, M. ♦ Aditya, P. K.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword PHYSICS ♦ BRANCHING RATIO ♦ DECAY ♦ EMISSION ♦ KAONS ♦ KAONS-PLUS ♦ MUONS ♦ NUCLEAR EMULSIONS ♦ PIONS ♦ PIONS-PLUS ♦ SECONDARY EMISSION
Abstract K/sup +/-decay events in a large block of emulsions were studied, mainly by following the charged secondaries to the ends of their ranges. Emphasis was placed on: (1) obtaining unbiassed information on the high-energy end of the spectrum of the K/sub mu //sub 3/ secondary; (2) a search for a decay mode K/sup +/ mu /sup +/ + mu /sup 0/; when combined with the results of earlier experiments the data were such that it should have been possible to detect the process if the branching ratio was greater than approx equal 5%; no positive evidence was found; (3) a search for pi /sup +/ secondaries of energy (53 to 61) Mev. Among 467 decay events tuere were no such secondaries. The branching ratios for the various decay modes were determined. Combining the data with those of previous experiments the following values were obtuined: B(K/sub mu // sub 2/) = (58.6 plus or minus 2.6)%; B(K/sub i/sub pi2/) = (21.7 plus or minus 2.5)%; B(K/sub pi //sub 3/)= (7.1 plus or minus 0.4)%; B(K'/sub pi3/) = (2.4 plus or minus 0.4)%; B(K/sub mm/) = (5.5 plus or minus 1.1)%; B(K/sub beta // sub 3/) = (4.7 plus or minus 1.1)%. The measured scanning efficiency in this experiment was 99%. (auth)
ISSN 00296341
Educational Use Research
Learning Resource Type Article
Publisher Date 1961-02-16
Publisher Department Univ. of Copenhagen
Journal Nuovo Cimento
Volume Number 10
Issue Number 19
Organization Univ. of Copenhagen


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