Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Evidence for Majorana Neutrinos: Dawn of a new era in spacetime
  structure   We show that Majorana particles belong to the Wigner class of fermions in
which the charge conjugation and the parity operators commute, rather than
anticommute. Rigorously speaking, Majorana spinors do not satisfy the Dirac
equation [a result originally due to M. Kirchbach, which we re-render here].
Instead, they satisfy a different wave equation, which we derive. This allows
us to reconcile St\"uckelberg-Feynman interpretation with the Majorana
construct. We present several new properties of neutral particle spinors and
argue that discovery of Majorana particles constitutes dawn of a new era in
spacetime structure.

21
The categories of this paper are: adap-org
37
The categories of this paper are: supr-con
28
The categories of this paper are: alg-geom
31
The categories of this paper are: ao-sci
32
The categories of this paper are: atom-ph
25
The categories of this paper are: patt-sol
29
The categories of this paper are: funct-an
34
The categories of this paper are: chem-ph
26
The categories of this paper are: bayes-an
22
The categories of this paper are: chao-dyn
33
The categories of this paper are: plasm-ph
2
The categories of this paper are: math
1
The categories of this paper are: cs
35
The categories of this paper are: mtrl-th
36
The categories of this paper are: cmp-lg
27
The categories of this paper are: comp-gas