Actions for Radiative decays of KL0 mesons. [Branching ratio, improve upper limits, cp-conserving M1 transition].

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Radiative decays of KL0 mesons. [Branching ratio, improve upper limits, cp-conserving M1 transition].

Author
Carroll, A. S.
Published
United States : [publisher not identified], 1976.
[Oak Ridge, Tennessee] : [U.S. Atomic Energy Commission], 1976.
Physical Description
microfiche : negative ; 11 x 15 cm
Additional Creators
Carithers, W. C., Chiang, I. H., de Brion, J. P., Kycia, T. F. (Thaddeus Francis), 1933-1999, Li, K. K., Littenberg, L. S., Marx, M. D., and Mazur, P. O.

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Summary
In an experiment at the Brookhaven National Laboratory AGS a number of radiative decays of the K/sup 0//sub L/(..pi../sup +/..pi../sup -/..gamma.., e/sup +/e/sup -/..gamma.. and ..mu../sup +/..mu../sup -/..gamma..) were studied. The charged particles from these decays were detected in a 5000 wire proportional chamber spectrometer and the gammas were detected in a 194 element lead glass Cherenkov counter array. Preliminary results, based on approximately 25 percent of our total data sample, are as follows: The branching ratio K/sup 0//sub L/ yields ..pi pi gamma..(direct)/K/sup 0//sub L/ yields all = 5.5 /sup +/- 1.0 x 10/sup -5/. One example of the previously unobserved decay K/sup 0//sub L/ yields ee..gamma.. was found, yielding a branching ratio of 8.3 +- 8.3 x 10/sup -6/. No examples of the decays K/sup 0//sub L/ yields ..mu mu gamma.., ee..pi../sup 0/, and Z/sup +/..mu mu pi../sup 0/ were found, yielding improved upper limits of K/sup 0//sub L/ yields ..mu mu gamma../K/sup 0//sub L/ yields all < 1.3 x 10/sup -6/, K/sup 0//sub L/ yields ee..pi../sup 0//K/sup 0/sub L/ yields all < 1.4 x 10/sup -5/, K/sup 0//sub L/ yields ..mu mu pi../sup 0//K/sup 0//sub L/ yields all < 2.5 x 10/sup -6/ with 90 percent confidence.
Report Numbers
BNL-21620; CONF-760719-7
Other Subject(s)
Collection
U.S. Atomic Energy Commission depository collection.
Note
DOE contract number: EY-76-C-02-0016 8
OSTI Identifier 7155596
Research organization: Brookhaven National Lab., Upton, N.Y. (USA).
Research organization: Rochester Univ., N.Y. (USA).
View MARC record | catkey: 42281579