Abstract
We explore the freeze-in production of dark matter in the singlet–doublet model where the dark matter is the lightest admixture of the neutral components of \(SU(2)_L\) vector doublet and singlet fermion. Here, the scalar sector is extended by a MeV scalar mediating the self-interaction of the fermion dark matter, which solves the small-scale anomaly of the Universe. The scalar particle is stable and contributes to the relic density of the dark matter. Self-interacting dark matter scenario demands large interaction between the dark particles, which makes this sector strongly coupled. In this case, thermal equilibrium occurs in the dark sector after the freeze-in, and the relic abundance of the fermion dark matter gets suppressed in the radiation-dominated early Universe. However, the non-standard cosmological evolution in the early Universe helped the fermion dark matter to achieve almost whole contribution towards the observed relic.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
Data Availability
Datasets generated during the current study are available from the corresponding author on reasonable request.
References
L.J. Hall, K. Jedamzik, J. March-Russell, S.M. West, Freeze-in production of FIMP dark matter. JHEP 03, 080 (2010) https://doi.org/10.1007/JHEP03(2010)080. arXiv:0911.1120 [hep-ph]
J.F. Navarro, C.S. Frenk, S.D.M. White, The structure of cold dark matter halos. Astrophys. J. 462, 563–575 (1996) https://doi.org/10.1086/177173. arXiv:astro-ph/9508025
D.N. Spergel, P.J. Steinhardt, Observational evidence for self-interacting cold dark matter. Phys. Rev. Lett. 84, 3760–3763 (2000). https://doi.org/10.1103/PhysRevLett.84.3760
P. Ghosh, P. Konar, A.K. Saha, S. Show, Self-interacting freeze-in dark matter in a singlet doublet scenario. JCAP 10, 017 (2022). https://doi.org/10.1088/1475-7516/2022/10/017arXiv:2112.09057 [hep-ph]
F. D’Eramo, N. Fernandez, S. Profumo, When the universe expands too fast: relentless dark matter. JCAP 05, 012 (2017). https://doi.org/10.1088/1475-7516/2017/05/012. arXiv:1703.04793 [hep-ph]
S. Tulin, H.-B. Yu, K.M. Zurek, Beyond collisionless dark matter: particle physics dynamics for dark matter halo structure. Phys. Rev. D 87, 115007 (2013). https://doi.org/10.1103/PhysRevD.87.115007
B. Colquhoun, S. Heeba, F. Kahlhoefer, L. Sagunski, S. Tulin, Semiclassical regime for dark matter self-interactions. Phys. Rev. D 103(3), 035006 (2021). https://doi.org/10.1103/PhysRevD.103.035006. arXiv:2011.04679 [hep-ph]
M. Kaplinghat, S. Tulin, H.-B. Yu, Dark matter halos as particle colliders: unified solution to small-scale structure puzzles from dwarfs to clusters. Phys. Rev. Lett. 116(4), 041302 (2016). https://doi.org/10.1103/PhysRevLett.116.041302. arXiv:1508.03339 [astro-ph.CO]
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
About this article
Cite this article
Show, S., Ghosh, P., Konar, P. et al. Realization of self-interacting freeze-in dark matter. Eur. Phys. J. Spec. Top. (2024). https://doi.org/10.1140/epjs/s11734-024-01122-5
Received:
Accepted:
Published:
DOI: https://doi.org/10.1140/epjs/s11734-024-01122-5