Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Circumscribing Late Dark Matter Decays Model Independently   A number of theories, spanning a wide range of mass scales, predict dark
matter candidates that have lifetimes much longer than the age of the universe,
yet may produce a significant flux of gamma rays in their decays today. We
constrain such late decaying dark matter scenarios model-independently by
utilizing gamma-ray line emission limits from the Galactic Center region
obtained with the SPI spectrometer on INTEGRAL, and the determination of the
isotropic diffuse photon background by SPI, COMPTEL and EGRET observations. We
show that no more than ~5% of the unexplained MeV background can be produced by
late dark matter decays either in the Galactic halo or cosmological sources.

28
The categories of this paper are: alg-geom
30
The categories of this paper are: q-alg
23
The categories of this paper are: solv-int
37
The categories of this paper are: supr-con
4
The categories of this paper are: cond-mat
33
The categories of this paper are: plasm-ph
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The categories of this paper are: eess
7
The categories of this paper are: hep-th
3
The categories of this paper are: physics
12
The categories of this paper are: nucl-th
14
The categories of this paper are: math-ph
36
The categories of this paper are: cmp-lg
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The categories of this paper are: chao-dyn
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The categories of this paper are: q-fin
24
The categories of this paper are: dg-ga
13
The categories of this paper are: quant-ph