Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: WIMPy Leptogenesis With Absorptive Final State Interactions   We consider a class of leptogenesis models in which the lepton asymmetry
arises from dark matter annihilation processes which violate CP and lepton
number. Importantly, a necessary one-loop contribution to the annihilation
matrix element arises from absorptive final state interactions. We elucidate
the relationship between this one-loop contribution and the CP-violating phase.
As we show, the branching fraction for dark matter annihilation to leptons may
be small in these models, while still generating the necessary asymmetry.

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The categories of this paper are: hep-th
29
The categories of this paper are: funct-an
30
The categories of this paper are: q-alg
1
The categories of this paper are: cs
28
The categories of this paper are: alg-geom
8
The categories of this paper are: hep-ex
31
The categories of this paper are: ao-sci
11
The categories of this paper are: hep-lat
18
The categories of this paper are: econ
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The categories of this paper are: quant-ph
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The categories of this paper are: dg-ga
2
The categories of this paper are: math
17
The categories of this paper are: q-fin
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The categories of this paper are: supr-con
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The categories of this paper are: chao-dyn
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The categories of this paper are: solv-int