The Lifetime and Decay Modes of Negative K Mesons Page: 44 of 55
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secondaries, or a total of 44.0t6.6 decays. This yields
.25+0.22 X10-8- -
220 X .10 sec for the K -meson mean lifetime.
The lifetime value is in excellent agreement with.that of the
+ -8 9
+K meson, 1.223 i0O13X10 sec, 9 and the relative abundances are
in reasonably good agreement with the. values. determined by Birge
et al. and by Alexander, Johnson, and O'Ceallaigh, except. for that
of the Tr mode,- which is. considerably lower than the -.. abundance
quoted by either group, and the .K 3 abundance, which is higher than
either K abundance but within .bne standard. deviation of that quoted
by Alexander, Johnson, and O'Ceallaigh.-
Because of the limited number of events.:available for analysis
in this study, the statistical errors. are too large to definitely establish
that the K~-meson lifetime and relative abundancesare identical with
the corresponding K+--meson. quantities. However, the results are
consistent with these identities, which arerequired by PCT-invariance
if the K and K mesons are particle and antiparticle...
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Nickols, N. A. The Lifetime and Decay Modes of Negative K Mesons, thesis or dissertation, September 1, 1959; United States. (https://digital.library.unt.edu/ark:/67531/metadc1015953/m1/44/: accessed April 25, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.