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Fitting a Self-Interacting Dark Matter Model to Data Ranging From Satellite Galaxies to Galaxy Clusters

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arxiv 2210.01132 v2 pith:L34AEJAQ submitted 2022-10-03 hep-ph astro-ph.COastro-ph.GAhep-exhep-th

Sudhakantha Girmohanta , Robert Shrock This is my paper · ORCID
classification hep-phastro-ph.COastro-ph.GAhep-exhep-th
keywords channeldataclustersdarkfitsgalaxiesgalaxymatter
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abstract

We present a fit to observational data in an asymmetric self-interacting dark matter model using our recently calculated cross sections that incorporate both $t$-channel and $u$-channel exchanges in the scattering of identical particles. We find good fits to the data ranging from dwarf galaxies to galaxy clusters, and equivalent relative velocities from $\sim 20$ km/sec to $\gtrsim 10^3$ km/s. We compare our results with previous fits that used only $t$-channel exchange contributions to the scattering.

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