Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Low-scale minimal linear seesaw model for neutrino mass and flavor
  mixing   We consider an extension of the Standard Model with three right-handed (RH)
neutrinos and a Dirac pair of extra sterile neutrinos, odd under a discrete
$Z_2$ symmetry, in order to have left-right symmetry in the neutrino content
and obtain tiny neutrino masses from the latter ones only. Our working
hypothesis is that the heavy RH neutrinos do not influence phenomenology at low
energies. We use the usual high-scale seesaw to suppress all of the mass terms
involving RH neutrinos and a low-scale minimal variant of the linear seesaw led
by the Dirac mass of the extra sterile neutrinos to provide the small mass of
active neutrinos. One of the active neutrinos is massless, which fixes the mass
of the other two on the basis of a soft breaking of the $Z_2$ symmetry. The
mixing between the extra neutrinos makes for a particle that effectively
behaves like a Dirac sterile neutrino with mass around the GeV level.

1
The categories of this paper are: cs
22
The categories of this paper are: chao-dyn
10
The categories of this paper are: q-bio
37
The categories of this paper are: supr-con
15
The categories of this paper are: nucl-ex
3
The categories of this paper are: physics
35
The categories of this paper are: mtrl-th
33
The categories of this paper are: plasm-ph
16
The categories of this paper are: stat
12
The categories of this paper are: nucl-th
25
The categories of this paper are: patt-sol
28
The categories of this paper are: alg-geom
7
The categories of this paper are: hep-th
6
The categories of this paper are: astro-ph
36
The categories of this paper are: cmp-lg
26
The categories of this paper are: bayes-an