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Author Kabir, P. K.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword PHYSICS ♦ DECAY ♦ ELECTRONS ♦ LEPTONS ♦ MESONS ♦ PI MESONS ♦ PIONS ♦ POSITRONS ♦ QUANTUM MECHANICS
Abstract The branching ratio R of pi /sup +/-e/sup +/ to pi /sup +/-- mu /sup +/ decays is shown to be a sensitive test for the presence of the Fermi A type of lepton-nonconserving interaction. For lepton conservation and equal coupling constants for beta decay and mu absorption, R is calculated to be R/sub 0/ = 1.28 x 10/sup -4/ for the A case, which is in excellent agreement with the experimental value of 1 x 10/sup -4/ observed by Anderson et al. If a small lepton-nonconserving interaction strength epsilon = D/sup 2//C/sup 2/ is present, R = 1 + N epsilon )R/sub 0/, where N = 7.45 x 10/sup 4/;thus an admixture of 10/sup -5/ of lepton-nonconserving A interaction would almost double R, and it is concluded that any such admixture must be considerably smaller or nonexistent. (D.L.C.)
ISSN 00296341
Educational Use Research
Learning Resource Type Article
Publisher Date 1960-08-01
Publisher Department Univ. of Calcutta
Journal Nuovo Cimento
Volume Number 17
Organization Univ. of Calcutta


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