Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: New Constraints on Isospin-Violating Dark Matter   We derive bounds on the dark matter annihilation cross-section for low-mass
(5-20 GeV) dark matter annihilating primarily to up or down quarks, using the
Fermi-LAT bound on gamma-rays from Milky Way satellites. For models in which
dark matter-Standard Model interactions are mediated by particular contact
operators, we show that these bounds can be directly translated into bounds on
the dark matter-proton scattering cross-section. For isospin-violating dark
matter, these constraints are tight enough to begin to constrain the
parameter-space consistent with experimental signals of low-mass dark matter.
We discuss possible models that can evade these bounds.

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The categories of this paper are: physics
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The categories of this paper are: mtrl-th
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The categories of this paper are: nucl-ex
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The categories of this paper are: hep-ex
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The categories of this paper are: acc-phys
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The categories of this paper are: nlin
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The categories of this paper are: stat
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The categories of this paper are: adap-org
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The categories of this paper are: chao-dyn
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The categories of this paper are: q-bio
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The categories of this paper are: nucl-th
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The categories of this paper are: eess
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The categories of this paper are: q-fin
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The categories of this paper are: cs
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The categories of this paper are: hep-th
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The categories of this paper are: math