Thermal squeezeout of dark matter
Name
PhysRevD.104.095013.pdf
Description
Published version
Size
1.61 MB
Format
Adobe PDF
Checksum (MD5)
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Author(s)
Asadi, Pouya
Kramer, Eric David
Kuflik, Eric
Ridgway, Gregory W
Slatyer, Tracy R
Smirnov, Juri
Date Issued
2021
Journal
Physical Review D
Publisher
American Physical Society (APS)
Citation
Asadi, Pouya, Kramer, Eric David, Kuflik, Eric, Ridgway, Gregory W, Slatyer, Tracy R et al. 2021. "Thermal squeezeout of dark matter." Physical Review D, 104 (9).
Version
Final published version
Abstract
We carry out a detailed study of the confinement phase transition in a dark
sector with a $SU(N)$ gauge group and a single generation of dark heavy quark.
We focus on heavy enough quarks such that their abundance freezes out before
the phase transition and the phase transition is of first-order. We find that
during this phase transition the quarks are trapped inside contracting pockets
of the deconfined phase and are compressed enough to interact at a significant
rate, giving rise to a second stage of annihilation that can dramatically
change the resulting dark matter abundance. As a result, the dark matter can be
heavier than the often-quoted unitarity bound of $\sim100~$TeV. Our findings
are almost completely independent of the details of the portal between the dark
sector and the Standard Model. We comment briefly on possible signals of such a
sector. Our main findings are summarized in a companion letter, while here we
provide further details on different parts of the calculation.
MIT Department
Massachusetts Institute of Technology. Center for Theoretical Physics
Terms of Use
Creative Commons Attribution 4.0 International License
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1103/PHYSREVD.104.095013
