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Journal Article

The Hubble tension and a renormalizable model of gauged neutrino self-interactions

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Jana,  Sudip
Division Prof. Dr. Manfred Lindner, MPI for Nuclear Physics, Max Planck Society;

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Trautner,  Andreas
Division Prof. Dr. Manfred Lindner, MPI for Nuclear Physics, Max Planck Society;

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Citation

Berbig, M., Jana, S., & Trautner, A. (2020). The Hubble tension and a renormalizable model of gauged neutrino self-interactions. Physical Review D, 102(11): 115008. doi:10.1103/PhysRevD.102.115008.


Cite as: https://hdl.handle.net/21.11116/0000-0008-297F-D
Abstract
We present a simple extension of the Standard Model that leads to renormalizable long-range vector-mediated neutrino self-interactions. This model can resolve the Hubble tension by delaying the onset of neutrino free-streaming during recombination, without conflicting with other measurements. The extended gauge, scalar, and neutrino sectors lead to observable signatures, including invisible Higgs and Z decays, thereby relating the Hubble tension to precision measurements at the LHC and future colliders. The model has a new neutrinophilic gauge boson with m(Z') similar to O(10 eV) and charged Higgses at a few 100 GeV. It requires hidden neutrinos with active-hidden mixing angles larger than 5 x 10(-4) and masses in the range 1 divided by 300 eV, which could also play a role for short baseline neutrino oscillation anomalies.