Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Shape of the Unitary Triangle and Phase Conventions of the CKM Matrix   A shape of the unitary triangle versus a CP violating parameter \delta
depends on the phase conventions of the CKM matrix, because the CP violating
parameter \delta cannot directly be observed, so that it is not
rephasing-invariant. In order to seek for a clue to the quark mass matrix
structure and the origin of the CP violation, the dependence of the unitary
triangle shape on the parameter \delta is systematically investigated.

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The categories of this paper are: nlin
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The categories of this paper are: acc-phys
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The categories of this paper are: mtrl-th
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The categories of this paper are: hep-lat
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The categories of this paper are: gr-qc
32
The categories of this paper are: atom-ph
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The categories of this paper are: nucl-th
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The categories of this paper are: solv-int
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The categories of this paper are: supr-con
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The categories of this paper are: hep-th
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The categories of this paper are: funct-an
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The categories of this paper are: q-alg
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The categories of this paper are: physics
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The categories of this paper are: nucl-ex
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The categories of this paper are: cond-mat
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The categories of this paper are: math-ph