Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Effective Lagrangian for the Seesaw Model of Neutrino Mass and
  Leptogenesis   The effective Lagrangian for the seesaw model is derived including effects
due to CP violation. Besides the usual dimension-5 operator responsible for
light neutrino masses, a dimension-6 operator is obtained. For three or less
heavy neutrino generations, the inclusion of both operators is necessary and
sufficient for all independent physical parameters of the high-energy seesaw
Lagrangian to appear in the low-energy effective theory, including the CP-odd
phases relevant for leptogenesis. The dimension-6 operator implies exotic
low-energy couplings for light neutrinos, providing a link between the
high-energy physics and low-energy observables.

29
The categories of this paper are: funct-an
17
The categories of this paper are: q-fin
36
The categories of this paper are: cmp-lg
6
The categories of this paper are: astro-ph
18
The categories of this paper are: econ
22
The categories of this paper are: chao-dyn
5
The categories of this paper are: gr-qc
30
The categories of this paper are: q-alg
26
The categories of this paper are: bayes-an
20
The categories of this paper are: acc-phys
24
The categories of this paper are: dg-ga
3
The categories of this paper are: physics
4
The categories of this paper are: cond-mat
27
The categories of this paper are: comp-gas
14
The categories of this paper are: math-ph
16
The categories of this paper are: stat