“…In our case, the parameter E parametrizes the local deformation of to determine the features of this parameter, the analytical forms of the metric coefficients and other phenomenological details of this theory, this formalism was used to analyse the experimental set-up and the results of two experiments carried out in Cologne [10] and Florence [11] where LLI was broken in the sense that superluminal propagation of electromagnetic waves was observed. From this analysis, it was possible to extrapolate the energy function of the metric parameters , as it is shown in [12,13]. However, for our purpose, that is to show the results of an experiment in which some photons anomalously interact with other photons (not according QED), it is sufficient to state that the analysis of the results of these two experiments found out, first of all, an energy value of 4.5 µeV which is the threshold value over which the local Space-Time becomes again minkowskian 9 and second, the space extension and the angles [11] over which it is possible to make out the deformed space-time effects of LLI breaking.…”