Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Implications of CP and CPT for production and decay of Majorana fermions   The consequences of CP- and CPT-invariance for production and subsequent
decay of Majorana fermions are analytically studied. We derive general symmetry
relations for the spin density matrix for production of Majorana fermions by
polarized fermion-antifermion annihilation which allow to distinguish Majorana
from Dirac fermions. We discuss the influence of the spin correlations on
energy and angular distributions of the decay products. Numerical results are
shown for the production of neutralinos and charginos with subsequent leptonic
decay at a future linear collider with longitudinally polarized beams.

34
The categories of this paper are: chem-ph
32
The categories of this paper are: atom-ph
28
The categories of this paper are: alg-geom
20
The categories of this paper are: acc-phys
25
The categories of this paper are: patt-sol
27
The categories of this paper are: comp-gas
4
The categories of this paper are: cond-mat
17
The categories of this paper are: q-fin
22
The categories of this paper are: chao-dyn
11
The categories of this paper are: hep-lat
14
The categories of this paper are: math-ph
30
The categories of this paper are: q-alg
13
The categories of this paper are: quant-ph
15
The categories of this paper are: nucl-ex
31
The categories of this paper are: ao-sci
7
The categories of this paper are: hep-th