Wino potential and Sommerfeld effect at NLO

We calculate the SU(2)×U(1) electroweak static potential between a fermionic triplet in the broken phase of the Standard Model in the one-loop order (NLO). The one-loop correction provides the leading non-relativistic correction to the large Sommerfeld effect in the annihilation of wino or wino-like...

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Bibliographic Details
Published inPhysics letters. B Vol. 800; p. 135112
Main Authors Beneke, Martin, Szafron, Robert, Urban, Kai
Format Journal Article
LanguageEnglish
Published Elsevier B.V 10.01.2020
Elsevier
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Summary:We calculate the SU(2)×U(1) electroweak static potential between a fermionic triplet in the broken phase of the Standard Model in the one-loop order (NLO). The one-loop correction provides the leading non-relativistic correction to the large Sommerfeld effect in the annihilation of wino or wino-like dark matter particles χ0. We find sizeable modifications of the χ0χ0 annihilation cross section and determine the shifts of the resonance locations due to the loop correction to the wino potential.
ISSN:0370-2693
1873-2445
DOI:10.1016/j.physletb.2019.135112