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  • Open Access

Dark sector electroweak baryogenesis in light of the Galactic Center excess

Jean-Samuel Roux and James M. Cline

  • McGill University, Department of Physics and Trottier Space Institute, 3600 University Street, Montréal, Quebec H3A 2T8 Canada

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Phys. Rev. D 112, 095028 – Published 20 November, 2025

DOI: https://doi.org/10.1103/syn9-2v6v

Abstract

We revisit a model of electroweak baryogenesis that includes a dark matter candidate, and sequesters the new CP violation required to produce the baryon asymmetry in a dark sector. The model can explain the baryon asymmetry, dark matter relic density, and long-standing excess of gamma rays from the Galactic Center. The first order electroweak phase transition induced by the new physics can give rise to gravitational waves that may be observed in future experiments. The model predicts dark matter signals in direct detectors, and a significant contribution to the Higgs boson invisible decay width.

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References (64)

  1. L. Goodenough and D. Hooper, Possible evidence for dark matter annihilation in the inner Milky Way from the Fermi gamma ray space telescope, arXiv:0910.2998.
  2. D. Hooper, The status of the Galactic Center gamma-ray excess, SciPost Phys. Proc. 12, 006 (2023).
  3. I. Cholis, Y.-M. Zhong, S. D. McDermott, and J. P. Surdutovich, Return of the templates: Revisiting the Galactic Center excess with multimessenger observations, Phys. Rev. D 105, 103023 (2022).
  4. S. D. McDermott, Y.-M. Zhong, and I. Cholis, On the morphology of the gamma-ray Galactic Centre excess, Mon. Not. R. Astron. Soc. 522, L21 (2023).
  5. Y.-M. Zhong and I. Cholis, Robustness of the Galactic Center excess morphology against masking, Phys. Rev. D 109, 123017 (2024).
  6. C. Keith, D. Hooper, and T. Linden, Cherenkov Telescope Array will test whether pulsars generate the Galactic Center gamma-ray excess, Phys. Rev. D 107, 103001 (2023).
  7. J. W. Foster, Y. Park, B. R. Safdi, Y. Soreq, and W. L. Xu, Search for dark matter lines at the Galactic Center with 14 years of Fermi data, Phys. Rev. D 107, 103047 (2023).
  8. M. Di Mauro and M. W. Winkler, Multimessenger constraints on the dark matter interpretation of the Fermi-LAT Galactic Center excess, Phys. Rev. D 103, 123005 (2021).
  9. J. M. Cline, K. Kainulainen, and D. Tucker-Smith, Electroweak baryogenesis from a dark sector, Phys. Rev. D 95, 115006 (2017).
  10. J. R. Espinosa, T. Konstandin, and F. Riva, Strong electroweak phase transitions in the standard model with a singlet, Nucl. Phys. B 854, 592 (2012).
  11. M. Lewicki, M. Merchand, and M. Zych, Electroweak bubble wall expansion: Gravitational waves and baryogenesis in standard model-like thermal plasma, J. High Energy Phys. 02 (2022) 017.
  12. J. Ellis, M. Lewicki, M. Merchand, J. M. No, and M. Zych, The scalar singlet extension of the standard model: Gravitational waves versus baryogenesis, J. High Energy Phys. 01 (2023) 093.
  13. J. M. Moreno, M. Quiros, and M. Seco, Bubbles in the supersymmetric standard model, Nucl. Phys. B526, 489 (1998).
  14. S. Profumo, M. J. Ramsey-Musolf, and G. Shaughnessy, Singlet Higgs phenomenology and the electroweak phase transition, J. High Energy Phys. 08 (2007) 010.
  15. S. Profumo, M. J. Ramsey-Musolf, C. L. Wainwright, and P. Winslow, Singlet-catalyzed electroweak phase transitions and precision Higgs boson studies, Phys. Rev. D 91, 035018 (2015).
  16. K. Hashino, M. Kakizaki, S. Kanemura, P. Ko, and T. Matsui, Gravitational waves and Higgs boson couplings for exploring first order phase transition in the model with a singlet scalar field, Phys. Lett. B 766, 49 (2017).
  17. C. Balazs, A. Fowlie, A. Mazumdar, and G. White, Gravitational waves at aLIGO and vacuum stability with a scalar singlet extension of the standard model, Phys. Rev. D 95, 043505 (2017).
  18. A. Beniwal, M. Lewicki, M. White, and A. G. Williams, Gravitational waves and electroweak baryogenesis in a global study of the extended scalar singlet model, J. High Energy Phys. 02 (2019) 183.
  19. K. Harigaya and I. R. Wang, First-order electroweak phase transition and baryogenesis from a naturally light singlet scalar, arXiv:2207.02867.
  20. V. Vaskonen, Electroweak baryogenesis and gravitational waves from a real scalar singlet, Phys. Rev. D 95, 123515 (2017).
  21. G. W. Anderson and L. J. Hall, The electroweak phase transition and baryogenesis, Phys. Rev. D 45, 2685 (1992).
  22. J. M. Cline, A. Friedlander, D.-M. He, K. Kainulainen, B. Laurent, and D. Tucker-Smith, Baryogenesis and gravity waves from a UV-completed electroweak phase transition, Phys. Rev. D 103, 123529 (2021).
  23. B. Laurent and J. M. Cline, First principles determination of bubble wall velocity, Phys. Rev. D 106, 023501 (2022).
  24. J. M. Cline and K. Kainulainen, Electroweak baryogenesis at high bubble wall velocities, Phys. Rev. D 101, 063525 (2020).
  25. M. B. Hindmarsh, M. Lüben, J. Lumma, and M. Pauly, Phase transitions in the early universe, SciPost Phys. Lect. Notes 24, 1 (2021).
  26. J. R. Espinosa, T. Konstandin, J. M. No, and G. Servant, Energy budget of cosmological first-order phase transitions, J. Cosmol. Astropart. Phys. 06 (2010) 028.
  27. T. Alanne, T. Hugle, M. Platscher, and K. Schmitz, A fresh look at the gravitational-wave signal from cosmological phase transitions, J. High Energy Phys. 03 (2020) 004.
  28. K. Schmitz, New sensitivity curves for gravitational-wave signals from cosmological phase transitions, J. High Energy Phys. 01 (2021) 097.
  29. A. Friedlander, I. Banta, J. M. Cline, and D. Tucker-Smith, Wall speed and shape in singlet-assisted strong electroweak phase transitions, Phys. Rev. D 103, 055020 (2021).
  30. J. R. Espinosa, B. Gripaios, T. Konstandin, and F. Riva, Electroweak baryogenesis in non-minimal composite Higgs models, J. Cosmol. Astropart. Phys. 01 (2012) 012.
  31. S. J. Huber and M. Sopena, An efficient approach to electroweak bubble velocities, arXiv:1302.1044.
  32. J. Cash and F. Mazzia, A new mesh selection algorithm, based on conditioning, for two-point boundary value codes, J. Comput. Appl. Math. 184, 362 (2005).
  33. D. de Florian et al. (LHC Higgs Cross Section Working Group), Handbook of LHC Higgs cross sections: 4. Deciphering the nature of the Higgs sector, CERN Yellow Rep. Monogr. 2, 1 (2017).
  34. E. W. Kolb, The Early Universe (Taylor and Francis, Boca Raton, Florida, 2019), Vol. 69.
  35. C. Johnson, R. Caputo, C. Karwin, S. Murgia, S. Ritz, and J. Shelton, Search for gamma-ray emission from p-wave dark matter annihilation in the Galactic Center, Phys. Rev. D 99, 103007 (2019).
  36. C. L. Wainwright, cosmotransitions: Computing cosmological phase transition temperatures and bubble profiles with multiple fields, Comput. Phys. Commun. 183, 2006 (2012).
  37. G. Aad et al. (ATLAS Collaboration), Combination of searches for invisible decays of the Higgs boson using 139  fb−1 of proton-proton collision data at s=13  TeV collected with the ATLAS experiment, Phys. Lett. B 842, 137963 (2023).
  38. 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).
  39. A. Heister et al. (ALEPH Collaboration), Absolute mass lower limit for the lightest neutralino of the MSSM from e+e− data at s up to 209-GeV, Phys. Lett. B 583, 247 (2004).
  40. 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).
  41. P. Achard et al. (L3 Collaboration), Search for scalar leptons and scalar quarks at LEP, Phys. Lett. B 580, 37 (2004).
  42. G. Abbiendi et al. (OPAL Collaboration), Search for anomalous production of dilepton events with missing transverse momentum in e+e− collisions at s=183-Gev to 209-GeV, Eur. Phys. J. C 32, 453 (2004).
  43. M. Aaboud et al. (ATLAS Collaboration), Search for electroweak production of supersymmetric particles in final states with two or three leptons at s=13  TeV with the ATLAS detector, Eur. Phys. J. C 78, 995 (2018).
  44. G. Aad et al. (ATLAS Collaboration), Search for electroweak production of supersymmetric particles in final states with two τ-leptons in s=13  TeV  pp collisions with the ATLAS detector, J. High Energy Phys. 05 (2024) 150.
  45. S. Navas et al. (Particle Data Group), Review of particle physics, Phys. Rev. D 110, 030001 (2024).
  46. K. S. Khaw, Y. Nakai, R. Sato, Y. Shigekami, and Z. Zhang, A large muon EDM from dark matter, J. High Energy Phys. 02 (2023) 234.
  47. M. J. Baker, P. Cox, and R. R. Volkas, Has the origin of the third-family fermion masses been determined?, J. High Energy Phys. 04 (2021) 151.
  48. C. Garcia-Cely and A. Rivera, General calculation of the cross section for dark matter annihilations into two photons, J. Cosmol. Astropart. Phys. 03 (2017) 054.
  49. E. Ma, Verifiable radiative seesaw mechanism of neutrino mass and dark matter, Phys. Rev. D 73, 077301 (2006).
  50. A. Abada and T. Toma, Electric dipole moments in the minimal scotogenic model, J. High Energy Phys. 04 (2018) 030.
  51. M. Fujiwara, J. Hisano, C. Kanai, and T. Toma, Electric dipole moments in the extended scotogenic models, J. High Energy Phys. 04 (2021) 114.
  52. J. A. Casas, J. R. Espinosa, M. Quiros, and A. Riotto, The lightest Higgs boson mass in the minimal supersymmetric standard model, Nucl. Phys. B436, 3 (1995); B439, 466(E) (1995).
  53. J. M. Cline and P.-A. Lemieux, Electroweak phase transition in two Higgs doublet models, Phys. Rev. D 55, 3873 (1997).
  54. J. Elias-Miro, J. R. Espinosa, and T. Konstandin, Taming infrared divergences in the effective potential, J. High Energy Phys. 08 (2014) 034.
  55. X. Fan, T. G. Myers, B. A. D. Sukra, and G. Gabrielse, Measurement of the electron magnetic moment, Phys. Rev. Lett. 130, 071801 (2023).
  56. L. Morel, Z. Yao, P. Cladé, and S. Guellati-Khélifa, Determination of the fine-structure constant with an accuracy of 81 parts per trillion, Nature (London) 588, 61 (2020).
  57. R. H. Parker, C. Yu, W. Zhong, B. Estey, and H. Müller, Measurement of the fine-structure constant as a test of the Standard Model, Science 360, 191 (2018).
  58. B. Abi et al. (Muon g−2 Collaboration), Measurement of the positive muon anomalous magnetic moment to 0.46 ppm, Phys. Rev. Lett. 126, 141801 (2021).
  59. R. Aliberti et al., The anomalous magnetic moment of the muon in the standard model: An update, Phys. Rep. 1143, 1 (2025).
  60. D. P. Aguillard et al. (Muon g−2 Collaboration), Measurement of the positive muon anomalous magnetic moment to 127 ppb, Phys. Rev. Lett. 135, 101802 (2025).
  61. Y. Nakai, Y. Shigekami, P. Sun, and Z. Zhang, Models for the electric dipole moment and anomalous magnetic moment of the tau lepton, arXiv:2508.05935.
  62. ACME Collaboration, Improved limit on the electric dipole moment of the electron, Nature (London) 562, 355 (2018).
  63. T. S. Roussy et al., An improved bound on the electron’s electric dipole moment, Science 381, adg4084 (2023).
  64. M. Ardu, S. Davidson, and N. Valori, Left-handed physics is not right for EDMs, arXiv:2507.19421.

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Phys. Rev. D 112, 095028– Published 20 November, 2025
  • Received 3 September 2025
  • Accepted 20 October 2025
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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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