Speaker
Fabian Zierler
(University of Graz)
Description
The Strongly Interacting Massive Particle (SIMP) paradigm provides dark matter (DM) candidates as pseudo-Goldstone bound states of dark fermions under a new gauge group. Freeze-out then occurs through $3\to2$ dark matter self-annihilation and points to DM masses of $O(100~\text{MeV})$. We study the spectrum of the lightest mesons of $Sp(4)$ gauge theory with $2$ fundamental Dirac fermions using lattice gauge theory. There are $5$ pseudo-Goldstone bosons which can self-annihilate. We investigate the explicit breaking of the flavour symmetry and report that one pseudo-Goldstone is lighter than the others which are still mass-degenerate.
Authors
Axel Torsten Maas
(University of Graz)
Fabian Zierler
(University of Graz)
