Search for the violation of Pauli Exclusion Principle at LNGS

H Shi,S Bertolucci,L De Paolis,M Iliescu,D Pietreanu,C Guaraldo,K Piscicchia,M Bazzi,S Di Matteo,O Vázquez Doce ,M Cargnelli,E Widmann,E Milotti,J Márton ,A Pichler,D Sirghi ,A Clozza,A Scordo,L Sperandio,C Curceanu,J P Egger ,M Laubenstein,J Zmeskal,A M Bragadireanu ,S Bartalucci,F Sirghi

doi:10.1051/epjconf/201818202118

Abstract

In the VIP (VIolation of Pauli exclusion principle) and its follow-up VIP- 2 experiments at the Laboratori Nazionali del Gran Sasso, we test the validity of the Pauli Exclusion Principle, by searching for x-rays from copper atomic transitions from a 2p orbit electron to the ground state which is already occupied by two electrons. Such transitions are prohibited by the Pauli Exclusion Principle. The physics run of the VIP-2 experiment started in late 2016 and will collect data for three years. From the first data taking period of two months we have obtained a new limit better than the VIP result from three years of running. In this article we present the published first physics result from the VIP-2 experiment and discuss about the future perspectives.

Highlights

In the VIP (VIolation of Pauli exclusion principle) and its follow-up VIP2 experiments at the Laboratori Nazionali del Gran Sasso, we test the validity of the Pauli Exclusion Principle, by searching for x-rays from copper atomic transitions from a 2p orbit electron to the ground state which is already occupied by two electrons
In this article we present the published first physics result from the VIP-2 experiment and discuss about the future perspectives
The experimental and theoretical searches for a small violation of the Pauli Exclusion Principle (PEP) or the violation of spinstatistics are reviewed exhaustively for example in [3] and [4], which all pointed out a notable fact that there exists no established model in quantum field theory that can include small violations of the PEP explicitly

Summary

Introduction

EPJ Web of Conferences to the violation of spin-statistics [1] [2] [3], and experimentally to the existence of states of particles that follow statistics other than the fermionic or the bosonic ones. Many limits for the violation have been presented by experimental searches, the parameters that quantify the limits cannot be directly compared since they are dependent on the model/system that the experiments based upon In this context, the experimental method introduced by Ramberg and Snow [5] is considered as one of the direct tests of the PEP as reviewed in [4]. The experimental method introduced by Ramberg and Snow [5] is considered as one of the direct tests of the PEP as reviewed in [4] In their original experiment, by running a high electric DC current through a copper conductor, they searched for x-rays from transitions that are PEP-forbidden after electrons are captured by copper atoms.

VIP-2 experiment

First result of the VIP-2 experiment

Future Perspectives