Testing the Pauli Exclusion Principle with the VIP-2 Experiment and beyond.

The Pauli Exclusion Principle (PEP) is one of the main cornerstones of the Quantum Theory at the basis of many phenomena, from the stability of the matter to neutron stars and from white dwarfs to superconductivity. Violation of the PEP, albeit small, could be motivated by physics beyond the Standard Model which entail extra space dimensions, violation of the Lorentz invariance, non-commutative space-time. These scenarios can be experimentally constrained with stat-of-the-art X-ray spectroscopy, searching for forbidden transition in atomic systems. The VIP-2 Experiment at Laboratori Nazionali del Gran Sasso targets PEP violation signal by introducing a strong direct current in a copper target, measuring X-ray through a silicon drift detector. The analysis of the experimental VIP-2 data is presented. A brief outlook of the future VIP-3 experiment is also shown.