Anapole moment of Majorana fermions and implications for direct detection of neutralino dark matter

Alejandro Ibarra, Merlin Reichard, Ryo Nagai

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

For Majorana fermions the anapole moment is the only allowed electromagnetic multipole moment. In this work we calculate the anapole moment induced at one-loop by the Yukawa and gauge interactions of a Majorana fermion, using the pinch technique to ensure the finiteness and gauge-invariance of the result. As archetypical example of a Majorana fermion, we calculate the anapole moment for the lightest neutralino in the Minimal Supersymmetric Standard Model, and specifically in the bino, wino and higgsino limits. Finally, we briefly discuss the implications of the anapole moment for the direct detection of dark matter in the form of Majorana fermions.

Original languageEnglish
Article number86
JournalJournal of High Energy Physics
Volume2023
Issue number1
DOIs
StatePublished - Jan 2023

Keywords

  • Models for Dark Matter
  • Supersymmetry

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