Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Lepton mass matrices from a quark-lepton analogy   We study the implications of having a similarity between quark and lepton
mixing in the Dirac sector of the Standard Model plus the right-handed
neutrino. This enable us to describe all masses and mixings in the Dirac sector
in terms of only five parameters: three mass scales $m_b$, $m_{\tau}$ and
$m_t$, one parameter $\lambda$ describing all the mixings, and a CP violating
phase in the quark sector. Then, from experimental data on neutrino masses and
mixings, we extract the heavy neutrino mass matrix. The approach considered,
although does not contraddict Grand Unified Theories, can help to find other
theoretical models of fermion masses.

31
The categories of this paper are: ao-sci
11
The categories of this paper are: hep-lat
20
The categories of this paper are: acc-phys
17
The categories of this paper are: q-fin
1
The categories of this paper are: cs
4
The categories of this paper are: cond-mat
19
The categories of this paper are: eess
13
The categories of this paper are: quant-ph
28
The categories of this paper are: alg-geom
14
The categories of this paper are: math-ph
3
The categories of this paper are: physics
25
The categories of this paper are: patt-sol
2
The categories of this paper are: math
26
The categories of this paper are: bayes-an
33
The categories of this paper are: plasm-ph
10
The categories of this paper are: q-bio