Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Pathways to testable leptogenesis   In the conventional seesaw models of neutrino masses, leptogenesis occurs at
a very high scale. Three approaches have been discussed in the literature to
lower the scale of leptogenesis: mass degeneracy, hierarchy of couplings and
three-body decays. We advocate yet another approach to a testable leptogenesis,
whereby the decaying particles could go out of equilibrium at an accessible
scale due to kinematics, although their couplings to the decay products are
larger for generating a desired CP asymmetry. We demonstrate this new
possibility for the testable leptogenesis in a two Higgs doublet model where
the neutrino masses originate from a one-loop diagram.

29
The categories of this paper are: funct-an
4
The categories of this paper are: cond-mat
30
The categories of this paper are: q-alg
20
The categories of this paper are: acc-phys
13
The categories of this paper are: quant-ph
16
The categories of this paper are: stat
21
The categories of this paper are: adap-org
12
The categories of this paper are: nucl-th
7
The categories of this paper are: hep-th
17
The categories of this paper are: q-fin
25
The categories of this paper are: patt-sol
32
The categories of this paper are: atom-ph
8
The categories of this paper are: hep-ex
18
The categories of this paper are: econ
37
The categories of this paper are: supr-con
11
The categories of this paper are: hep-lat