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Acknowledgments
We are very grateful to Toshi Ota, Enrique Fernandez Martinez and Pilar Coloma for pointing out the relevance of χ self-interactions in the gauge U(1) case. We are also very grateful to Xiaoyong Chu for pointing out the potential relevance of exponential production of χ particles prior to BBN. This project has received support from the European Union’s Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant agreement No 860881-HIDDeN. The work of JTC is supported by the Ministerio de Ciencia e Innovación under FPI contract PRE2019-089992 of the SEV-2015-0548 grant.
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Addendum to: JHEP02(2023)142
ArXiv ePrint: 2211.01729
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Escudero, M., Schwetz, T. & Terol-Calvo, J. Addendum to: A seesaw model for large neutrino masses in concordance with cosmology. J. High Energ. Phys. 2024, 119 (2024). https://doi.org/10.1007/JHEP06(2024)119
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DOI: https://doi.org/10.1007/JHEP06(2024)119