Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Suppression of Neutralino Annihilation into Zh   The Indirect Detection of neutralino Dark Matter is most promising through
annihilation channels producing a hard energy spectrum for the detected
particles, such as the neutralino annihilation into $Zh$. A cancellation
however makes this particular annihilation channel generically subdominant in
the huge parameter space of supersymmetric models. This cancellation requires
non-trivial relations between neutralino mixings and masses, which we derive
from gauge independence and unitarity of the MSSM. To show how the cancellation
overshoots leaving only a subdominant result, we use a perturbative expansion
in powers of the electroweak/supersymmetry breaking ratio $m_{Z}/m_{\chi}$.

22
The categories of this paper are: chao-dyn
19
The categories of this paper are: eess
28
The categories of this paper are: alg-geom
5
The categories of this paper are: gr-qc
24
The categories of this paper are: dg-ga
30
The categories of this paper are: q-alg
9
The categories of this paper are: nlin
32
The categories of this paper are: atom-ph
26
The categories of this paper are: bayes-an
29
The categories of this paper are: funct-an
15
The categories of this paper are: nucl-ex
3
The categories of this paper are: physics
1
The categories of this paper are: cs
18
The categories of this paper are: econ
27
The categories of this paper are: comp-gas
12
The categories of this paper are: nucl-th