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arXiv · 1603.01383

Self-consistent Calculation of the Sommerfeld Enhancement

Kfir Blum·Ryosuke Sato·Tracy R. Slatyer
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Abstract

A calculation of the Sommerfeld enhancement is presented and applied to the problem of s-wave non-relativistic dark matter annihilation. The difference from previous computations in the literature is that the effect of the underlying short-range scattering process is consistently included together with the long-range force in the effective QM Schrödinger problem. Our procedure satisfies partial-wave unitarity where previous calculations fail. We provide analytic results for some potentials of phenomenological relevance.

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Kfir Blum, Ryosuke Sato, Tracy R. Slatyer. 2016-06-28. Self-consistent Calculation of the Sommerfeld Enhancement. https://doi.org/10.1088/1475-7516%2F2016%2F06%2F021

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