The 115 GeV signal from nuclear physics

In some nuclear models, neutron magic numbers intersect the neutron drip line for nuclei having about 123, 187 and 264 nucleons. These masses corresponds, in GeV, to 115, 175 and 246. Reversing the argument, it can be said that a study of the neutron drip line predicts the existence of three physical scales at 115 GeV, 175 Gev and 246 Gev. Figure 1: figure 10 of [3], plus an inset of figure 20. We translate between GeV and atomic mass units via the conversion constant 1u. = 0.9315GeV. The only addition to the original plot are the diagonal isobars, at MW , MZ , 115 Gev, Mt and 246 Gev. At the drip line, neutrons from the shell closure are very weakly bound, so it is not astonishing that the rest of the nucleus can appear to them as a single particle. In [2], we examined some empirical evidence for this kind of effect, looking for a physical justification of the strong enhancement of spin-orbit coupling in doubly magic shells. The idea was that models do not taking into account the electroweak scales should show an increase of its error when calculating nuclei around them. So we look for, and found, strong error near the mass values of W and Z. EUPT (Universidad de Zaragoza), 44003 Teruel, Spain