CONOS Results out.

Any new force between neutrinos and quarks, might be detected in scattering between neutrinos and nuclei - such as coherent elastic neutrino nucleus scattering (CEvNS) processes. Experiments have recently improved to be able to detected such scattering, and one such experiment CONUS has reported results last month with PDF Presentation. Results include, limits on neutrino magnetic moments, of less than 7.5*10^-11 Bohr Magnetrons at 90% CLL. Also neutrino millicharge less than 3.3*10^-12 of the electron charge at 90% CL. There are also some limits quote on non standard neutrino interactions (which i what am in interested in), but the limits are 90% C.L. limit is factor ~2 above SM prediction.

New Particle Claim, X at 17 MeV.

In my weekly, literature search, I found, the preprint by Denton and Gehrlein, which investiages evidence for a 17 MeV boson, in nuclear decays, which itself decays to an electron position pair. The Authors found, the new particle, could be a mediator for the often suggested (B-L) symmetry (Baryon number minus Lepton Number), which often crops up in grand unification theorys (for example, Patti Salem). However the charges on quarks, electrons, and neutrinos, need to be different to pure (B-L), which may be explained, by breaking the (B-L) symmetry with a new Higgs Boson, and then also introducing Kenetic mixing the EM photon, as explained in Feng et Al. The 17 MeV particles, has previously generated quite a bit of interest, and was reported in scientific journalism, (e.g. physics world).