Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Incompatibility of different customary kaon phase convention   The conventions that Wu and Yang assumed for the kaon phases in the context
of $CP$ symmetrical two-pion decay channels fix the relative kaon phase. This
fact, apparently not emphasized sufficiently in the past, has recently been
overlooked by Hayakawa and Sanda. In particular, Wu and Yang fix the relative
phase to a different value than the one resulting from the convention
$CP|K^{0}\rangle = |\overline{K^{0}}\rangle$. The difference between the two
values is made up of possible contributions from $CPT$- and direct
$CP$-violations during the decay of a kaon into a two-pion state of isospin
zero.

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The categories of this paper are: chao-dyn
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The categories of this paper are: q-bio
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The categories of this paper are: q-alg
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The categories of this paper are: acc-phys
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The categories of this paper are: math
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The categories of this paper are: math-ph
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The categories of this paper are: atom-ph
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The categories of this paper are: physics
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The categories of this paper are: econ
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The categories of this paper are: cmp-lg
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The categories of this paper are: alg-geom
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The categories of this paper are: ao-sci
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The categories of this paper are: funct-an
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The categories of this paper are: solv-int
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The categories of this paper are: comp-gas
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The categories of this paper are: dg-ga