Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: What does a non-vanishing neutrino mass have to say about the strong CP
  problem?   A new solution to the strong CP problem with distinct experimental signatures
at the LHC is proposed. It is based on the Yukawa interactions between mirror
quarks, Standard Model (SM) quarks and Higgs singlets. (Mirror quarks and
leptons which include non-sterile right-handed neutrinos whose Majorana masses
are proportional to the electroweak scale, form the basis of the EW-$\nu_R$
model.) The aforementioned Yukawa couplings can in general be complex and can
contribute to $Arg\, Det M$ ($\bar{\theta} = \theta_{QCD} + Arg\, Det M$) at
tree-level. The crux of matter in this manuscript is the fact that {\em no
matter how large} the CP-violating phases in the Yukawa couplings might be,
$Arg\, Det M$ can remain small i.e. $\bar{\theta} < 10^{-10}$ for reasonable
values of the Yukawa couplings and, in fact, vanishes when the VEV of the Higgs
singlet (responsible for the Dirac part of the neutrino mass in the seesaw
mechanism) vanishes. The smallness of the contribution to $\bar{\theta}$ is
{\em principally due} to the smallness of the ratio of the two mass scales in
the seesaw mechanism: the Dirac and Majorana mass scales.

24
The categories of this paper are: dg-ga
14
The categories of this paper are: math-ph
31
The categories of this paper are: ao-sci
36
The categories of this paper are: cmp-lg
25
The categories of this paper are: patt-sol
18
The categories of this paper are: econ
20
The categories of this paper are: acc-phys
35
The categories of this paper are: mtrl-th
28
The categories of this paper are: alg-geom
7
The categories of this paper are: hep-th
1
The categories of this paper are: cs
13
The categories of this paper are: quant-ph
17
The categories of this paper are: q-fin
33
The categories of this paper are: plasm-ph
26
The categories of this paper are: bayes-an
27
The categories of this paper are: comp-gas