Glueballs in a Thermal Squeezeout Model
arXiv:2203.15813 · doi:10.1007/JHEP07(2022)006
Abstract
It has been shown that a first order confinement phase transition can drastically change the relic dark matter abundance in confining dark sectors with only heavy dark quarks. We study the phenomenology of one such model with a Z' portal to Standard Model. We find that dark glueballs are long-lived in this setup and dilute the dark matter abundance after their decay to Standard Model. With this effect, the correct relic abundance is obtained with dark matter masses up to ~TeV. We find that while a part of the parameter space is already ruled out by direct detection and collider searches, there is still a broad space of viable scenarios that can be probed by future experiments.
arXiv comment10 pages, 8 figures, and three Appendices on thermodynamics and Phase Transitions and heavier Glueball states. Version published in JHEP
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