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Impact of conversion-driven processes on singlet-doublet Majorana dark matter relic

Partha Kumar Paul*, Sujit Kumar Sahoo†, and Narendra Sahu‡

  • *Contact author: ph22resch11012@iith.ac.in
  • †Contact author: ph21resch11008@iith.ac.in
  • ‡Contact author: nsahu@phy.iith.ac.in
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Phys. Rev. D 113, 095040 – Published 27 May, 2026

DOI: https://doi.org/10.1103/kctx-7kfl

Abstract

The singlet-doublet dark matter model offers a rich framework for exploring the nature of dark matter (DM) through its unique fermion structure. In this model, the important parameters are the singlet-doublet mass splitting ΔM, the singlet-doublet mixing angle sinθ, and the DM mass MDM. If the DM is assumed to be of Dirac nature, then the annihilation, coannihilation, and conversion driven processes combined allow a range of parameter space: 100  GeV≲MDM≲750  GeV and 10−6≲sinθ≲0.04 for ΔM>1  GeV. While the nature of DM, either Dirac or Majorana, is not known, in this work, we assume the singlet-doublet DM to be of Majorana type and find that the relic density and direct detection can be satisfied over a larger parameter space. In particular, the allowed ranges of DM mass and sinθ are 100  GeV≲MDM≲1750  GeV and 2×10−7≲sinθ≲0.45 for ΔM>1  GeV.

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References (46)

  1. N. Aghanim et al. (Planck Collaboration), Planck 2018 results. VI. Cosmological parameters, Astron. Astrophys. 641, A6 (2020); 652, C4(E) (2021).
  2. F. Zwicky, Die Rotverschiebung von extragalaktischen Nebeln, Helv. Phys. Acta 6, 110 (1933).
  3. V. C. Rubin and W. K. Ford, Jr., Rotation of the Andromeda Nebula from a spectroscopic survey of emission regions, Astrophys. J. 159, 379 (1970).
  4. S. Bhattacharya, P. Ghosh, N. Sahoo, and N. Sahu, Mini review on vector-like leptonic dark matter, neutrino mass, and collider signatures, Front. Phys. 7, 80 (2019).
  5. M. Dutta, S. Bhattacharya, P. Ghosh, and N. Sahu, Singlet-doublet Majorana dark matter and neutrino mass in a minimal Type-I seesaw scenario, J. Cosmol. Astropart. Phys. 03 (2020) 008.
  6. G. Cynolter, J. Kovács, and E. Lendvai, Doublet–singlet model and unitarity, Mod. Phys. Lett. A 31, 1650013 (2016).
  7. S. Bhattacharya, N. Sahoo, and N. Sahu, Minimal vectorlike leptonic dark matter and signatures at the LHC, Phys. Rev. D 93, 115040 (2016).
  8. S. Bhattacharya, N. Sahoo, and N. Sahu, Singlet-doublet fermionic dark matter, neutrino mass and collider signatures, Phys. Rev. D 96, 035010 (2017).
  9. S. Bhattacharya, P. Ghosh, and N. Sahu, Multipartite dark matter with scalars, fermions and signatures at LHC, J. High Energy Phys. 02 (2018) 059.
  10. S. Bhattacharya, B. Karmakar, N. Sahu, and A. Sil, Flavor origin of dark matter and its relation with leptonic nonzero θ13 and Dirac CP phase δ, J. High Energy Phys. 05 (2016) 068.
  11. D. Borah, M. Dutta, S. Mahapatra, and N. Sahu, Lepton anomalous magnetic moment with singlet-doublet fermion dark matter in a scotogenic U(1)Lμ−Lτ model, Phys. Rev. D 105, 015029 (2022).
  12. D. Borah, M. Dutta, S. Mahapatra, and N. Sahu, Singlet-doublet self-interacting dark matter and radiative neutrino mass, Phys. Rev. D 105, 075019 (2022).
  13. D. Borah, S. Mahapatra, and N. Sahu, Singlet-doublet fermion origin of dark matter, neutrino mass and W-mass anomaly, Phys. Lett. B 831, 137196 (2022).
  14. D. Borah, S. Mahapatra, D. Nanda, S. K. Sahoo, and N. Sahu, Singlet-doublet fermion dark matter with Dirac neutrino mass, (g−2)μ and ΔNeff, J. High Energy Phys. 05 (2023) 096.
  15. P. K. Paul, N. Sahu, and P. Shukla, Thermal leptogenesis, dark matter, and gravitational waves from an extended canonical seesaw scenario, Phys. Rev. D 112, 015032 (2025).
  16. R. Mahbubani and L. Senatore, The minimal model for dark matter and unification, Phys. Rev. D 73, 043510 (2006).
  17. F. D’Eramo, Dark matter and Higgs boson physics, Phys. Rev. D 76, 083522 (2007).
  18. T. Cohen, J. Kearney, A. Pierce, and D. Tucker-Smith, Singlet-doublet dark matter, Phys. Rev. D 85, 075003 (2012).
  19. A. Freitas, S. Westhoff, and J. Zupan, Integrating in the Higgs portal to fermion dark matter, J. High Energy Phys. 09 (2015) 015.
  20. L. Calibbi, A. Mariotti, and P. Tziveloglou, Singlet-doublet model: Dark matter searches and LHC constraints, J. High Energy Phys. 10 (2015) 116.
  21. C. Cheung and D. Sanford, Simplified models of mixed dark matter, J. Cosmol. Astropart. Phys. 02 (2013) 011.
  22. S. Banerjee, S. Matsumoto, K. Mukaida, and Y.-L. S. Tsai, WIMP dark matter in a well-tempered regime: A case study on singlet-doublets fermionic WIMP, J. High Energy Phys. 11 (2016) 070.
  23. A. Dutta Banik, A. K. Saha, and A. Sil, Scalar assisted singlet doublet fermion dark matter model and electroweak vacuum stability, Phys. Rev. D 98, 075013 (2018).
  24. S. Horiuchi, O. Macias, D. Restrepo, A. Rivera, O. Zapata, and H. Silverwood, The Fermi-LAT gamma-ray excess at the galactic center in the singlet-doublet fermion dark matter model, J. Cosmol. Astropart. Phys. 03 (2016) 048.
  25. D. Restrepo, A. Rivera, M. Sánchez-Peláez, O. Zapata, and W. Tangarife, Radiative neutrino masses in the singlet-doublet fermion dark matter model with scalar singlets, Phys. Rev. D 92, 013005 (2015).
  26. T. Abe, Effect of CP violation in the singlet-doublet dark matter model, Phys. Lett. B 771, 125 (2017).
  27. P. Konar, A. Mukherjee, A. K. Saha, and S. Show, Linking pseudo-Dirac dark matter to radiative neutrino masses in a singlet-doublet scenario, Phys. Rev. D 102, 015024 (2020).
  28. P. Konar, A. Mukherjee, A. K. Saha, and S. Show, A dark clue to seesaw and leptogenesis in a pseudo-Dirac singlet doublet scenario with (non)standard cosmology, J. High Energy Phys. 03 (2020) 044.
  29. L. Calibbi, L. Lopez-Honorez, S. Lowette, and A. Mariotti, Singlet-doublet dark matter freeze-in: LHC displaced signatures versus cosmology, J. High Energy Phys. 09 (2018) 037.
  30. P. Ghosh, P. Konar, A. K. Saha, and S. Show, Self-interacting freeze-in dark matter in a singlet doublet scenario, J. Cosmol. Astropart. Phys. 10 (2021) 017.
  31. P. K. Das, P. Konar, S. Kundu, and S. Show, Jet substructure probe to unfold singlet-doublet dark matter in the presence of non-standard cosmology, J. High Energy Phys. 06 (2023) 198.
  32. S. Bhattacharya, S. Jahedi, and J. Wudka, Probing heavy charged fermions at e+e− collider using the optimal observable technique, J. High Energy Phys. 05 (2021) 009.
  33. R. Enberg, P. J. Fox, L. J. Hall, A. Y. Papaioannou, and M. Papucci, LHC and dark matter signals of improved naturalness, J. High Energy Phys. 11 (2007) 014.
  34. P. K. Paul, S. K. Sahoo, and N. Sahu, Anatomy of singlet-doublet dark matter relic: Annihilation, co-annihilation, co-scattering, and freeze-in, J. Cosmol. Astropart. Phys. 10 (2024) 053.
  35. R. T. D’Agnolo, D. Pappadopulo, and J. T. Ruderman, Fourth exception in the calculation of relic abundances, Phys. Rev. Lett. 119, 061102 (2017).
  36. M. Garny, J. Heisig, B. Lülf, and S. Vogl, Coannihilation without chemical equilibrium, Phys. Rev. D 96, 103521 (2017).
  37. T. N. Maity and T. S. Ray, Exchange driven freeze out of dark matter, Phys. Rev. D 101, 103013 (2020).
  38. G. Aad et al. (ATLAS Collaboration), Search for events with a pair of displaced vertices from long-lived neutral particles decaying into hadronic jets in the ATLAS muon spectrometer in pp collisions at s=13  TeV, Phys. Rev. D 106, 032005 (2022).
  39. A. Hayrapetyan et al. (CMS Collaboration), Search for long-lived particles using displaced vertices and missing transverse momentum in proton-proton collisions at s=13TeV, Phys. Rev. D 109, 112005 (2024).
  40. C. Alpigiani et al. (MATHUSLA Collaboration), Explore the lifetime frontier with MATHUSLA, J. Instrum. 15, C06026 (2020).
  41. G. Alguero, G. Belanger, S. Kraml, and A. Pukhov, Co-scattering in micrOMEGAs: A case study for the singlet-triplet dark matter model, SciPost Phys. 13, 124 (2022).
  42. G. Alguero, G. Belanger, F. Boudjema, S. Chakraborti, A. Goudelis, S. Kraml, A. Mjallal, and A. Pukhov, micrOMEGAs 6.0: N-component dark matter, Comput. Phys. Commun. 299, 109133 (2024).
  43. J. Abdallah et al. (DELPHI Collaboration), Searches for supersymmetric particles in e+ e- collisions up to 208-GeV and interpretation of the results within the MSSM, Eur. Phys. J. C 31, 421 (2003).
  44. J. Aalbers et al. (LZ Collaboration), Dark matter search results from 4.2 tonne-years of exposure of the LUX-ZEPLIN (LZ) experiment, Phys. Rev. Lett. 135, 011802 (2025).
  45. G. Aad et al. (ATLAS Collaboration), Search for chargino–neutralino pair production in final states with three leptons and missing transverse momentum in s=13  TeV pp collisions with the ATLAS detector, Eur. Phys. J. C 81, 1118 (2021).
  46. A. Tumasyan, Andrew J. McLeod, and Matthias Wilhelm (CMS Collaboration), Search for electroweak production of charginos and neutralinos in proton-proton collisions at s=13  TeV, J. High Energy Phys. 04 (2021) 147.

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Phys. Rev. D 113, 095040– Published 27 May, 2026
  • Received 25 November 2025
  • Accepted 4 May 2026
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Published by the American Physical Society under the terms of the 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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