PoS - Proceedings of Science
Volume 397 - The Ninth Annual Conference on Large Hadron Collider Physics (LHCP2021) - Poster Session
Sp(4) SIMP Dark Matter on the Lattice
F. Zierler* and A. Maas
Full text: pdf
Pre-published on: October 20, 2021
Published on: November 17, 2021
The Strongly Interacting Massive Particle (SIMP) paradigm has recently been increasingly studied. It provides Dark Matter (DM) candidates as pseudo-Goldstone bound-states of dark fermions under a new gauge group. In this scenario freeze-out occurs through $3 \to 2$ dark matter self-annihilation and points to DM particles with masses of $O(100 \text{ MeV})$. We study the spectrum of the lightest mesons of $Sp(4)$ gauge theory with two massive non-degenerate fundamental Dirac fermions using lattice gauge theory. The theory has a total of five pseudo-Goldstone bosons which can self-annihilate. In particular, we investigate the breaking of the flavor symmetry when making the fermions non-degenerate. We report that one pseudo-Goldstone is lighter than the others while the remaining heavier four pseudo-Goldstones are still mass-degenerate.
DOI: https://doi.org/10.22323/1.397.0162
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