Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Unitarity condition method for global fits of the
  Cabibbo-Kobayashi-Maskawa matrix   We report on an exact method for global fits of the CKM matrix by using the
necessary and sufficient conditions the data have to satisfy in order to find a
unitary matrix compatible with them, and this method can be applied to both
quark and lepton CKM matrices. The key condition writes $-1\le\cos\delta\le 1$
where $\delta$ is the phase that encodes the CP violation, and it is obtained
when one describes the CKM matrix in terms of four moduli of its entries. We
use it to reconstruct many approximate unitary matrices from the PDG data, and
by using the double stochasticity property of the unitary matrices we find a
strong dependence of $\sin 2\beta$ on $|U_{ub}|$, that implies also strong
correlations between $|U_{ij}|$ themselves, proving the constraining power of
this approach.

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The categories of this paper are: nlin
21
The categories of this paper are: adap-org
26
The categories of this paper are: bayes-an
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The categories of this paper are: funct-an
28
The categories of this paper are: alg-geom
12
The categories of this paper are: nucl-th
3
The categories of this paper are: physics
31
The categories of this paper are: ao-sci
10
The categories of this paper are: q-bio
14
The categories of this paper are: math-ph
16
The categories of this paper are: stat
36
The categories of this paper are: cmp-lg
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The categories of this paper are: chao-dyn
18
The categories of this paper are: econ
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The categories of this paper are: gr-qc
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The categories of this paper are: astro-ph