Abstract
We apply a genetic programming technique to search for
the doubly Cabibbo suppressed decays +c to
pK+p- and D+s to K+K+p-. We normalise these decays to
their Cabibbo favoured partners and find BR(to
pK+p-)/BR(to pK-p+) = (0.05 0.26 0.02)%
and BR(D+s to K+K+p-)/BR(D to K-K+p+) = (0.52 0.17
0.11) percent where the first errors are
statistical and the second are systematic. Expressed as
90 percent confidence levels (CL), we find < 0.46
percent and < 0.78 percent respectively. This is the
first successful use of genetic programming in a high
energy physics data analysis.
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