The Hubble tension and a renormalizable model of gauged neutrino self-interactions. (arXiv:2004.13039v2 [hep-ph] UPDATED)
<a href="http://arxiv.org/find/hep-ph/1/au:+Berbig_M/0/1/0/all/0/1">Maximilian Berbig</a>, <a href="http://arxiv.org/find/hep-ph/1/au:+Jana_S/0/1/0/all/0/1">Sudip Jana</a>, <a href="http://arxiv.org/find/hep-ph/1/au:+Trautner_A/0/1/0/all/0/1">Andreas Trautner</a>

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
$m_{Z’}simmathcal{O}(10~mathrm{eV})$ and charged Higgses at a few
$100~mathrm{GeV}$. It requires hidden neutrinos with active-hidden mixing
angles larger than $5times10^{-4}$ and masses in the range
$1div300mathrm{eV}$, which could also play a role for short baseline neutrino
oscillation anomalies.

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
$m_{Z’}simmathcal{O}(10~mathrm{eV})$ and charged Higgses at a few
$100~mathrm{GeV}$. It requires hidden neutrinos with active-hidden mixing
angles larger than $5times10^{-4}$ and masses in the range
$1div300mathrm{eV}$, which could also play a role for short baseline neutrino
oscillation anomalies.

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