Heavy baryon dark matter from SU (N) confinement: Bubble wall velocity and boundary effects

Yann Gouttenoire, Eric Kuflik, Di Liu*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Confinement in SU(NDC) Yang-Mills theories is known to proceed through first-order phase transition. The wall velocity is bounded by vw≲10-6 due to the needed time for the substantial latent heat released during the phase transition to dissipate through Hubble expansion. Quarks which are much heavier than the confinement scale can be introduced without changing the confinement dynamics. After they freeze-out, heavy quarks are squeezed into pockets of the deconfined phase until they completely annihilate with antiquarks. We calculate the dark baryon abundance surviving annihilation, due to bound-state formation occurring both in the bulk and - for the first time - at the boundary. We find that dark baryons can be dark matter with a mass up to 103 TeV. We study indirect and direct detection, cosmic microwave background and big bang nucleosynthesis probes, assuming portals to Higgs and neutrinos.

Original languageAmerican English
Article number035002
JournalPhysical Review D
Issue number3
StatePublished - 1 Feb 2024

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© 2024 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/"Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3.


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