HET Seminar

"Sommerfeld effect at the next-to-leading order for Wino dark matter"

Presented by Robert Szafron, CERN

Wednesday, November 18, 2020, 2:30 pm — Videoconference / Virtual Event (see link below)

Abstract: I will discuss the computation of the Sommerfeld enhancement factor for the wino dark matter at the next-to-leading order. First, I will introduce the effective field theory framework, and I will show how to calculate the correction to the Yukawa potential generated by the exchange of gauge bosons in the Standard Model. This effect leads to a sizeable modification of the annihilation cross-section, particularly near the resonance region, where it shifts the resonance position. Finally, I will discuss how these corrections influence relic abundance.

Hosted by: Peter Denton

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