# Electroweak corrections to the freeze-out of Minimal Dark Matter

- Institution: CERN
- Speaker: Mateusz Duch
- Year: 2026
- Language: English
- Source: [CERN](https://videos.cern.ch/record/3026506)
- Licence: [CERN](https://copyright.web.cern)
- Who can watch: Teens profiles and older (sources give no ratings; placed by Invisible Network from the source's own words)

We compute the one-loop electroweak corrections to coannihilation cross sections for fermionic Minimal Dark Matter multiplets. For the inclusive combination governing thermal freeze-out, real and virtual infrared singularities cancel in the s-wave limit. Nevertheless, sizable finite electroweak corrections remain. They increase with the size of the electroweak multiplet and reach the few-percent level for the phenomenologically most relevant cases: the Higgsino-like doublet, the wino-like triplet, and the stable quintuplet. We further show that infrared-enhanced terms survive in velocity-suppressed rates through an interplay between Sudakov radiation and Sommerfeld enhancement, although these channels are numerically subdominant during freeze-out.

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## Lectures

1. [Electroweak corrections to the freeze-out of Minimal Dark Matter](https://invisiblenetwork.ai/learn/cern/3026506/947a5e1f6da5), 10 min (CERN's player)