MOre invisible beauty decays.

https://arxiv.org/abs/2312.12507 In a recent update to the invisable beauty decay found at Bella, finds it favours a two body decay, (but with final mass 0.6 GeV), our our axial force has 6 invisable end products, electron, muon and tau neutrino anti-neutrino pairs, but also there near sterile right handed complements, could the right handed tau neutrino have a 600MeV mass? If so it would make a strong decay matter candidate, if and only if its does't decay or its decay is very slow.