Searches for the violation of Pauli exclusion principle at LNGS in VIP(-2) experiment

[摘要] The VIP (Violation of Pauli exclusion principle) experiment and its follow-up experiment VIP-2 at the Laboratori Nazionali del Gran Sasso (LNGS) search for X-rays from Cu atomic states that are prohibited by the Pauli Exclusion Principle (PEP). The candidate events, if they exist, will originate from the transition of a 2p orbit electron to the ground state which is already occupied by two electrons. The present limit on the probability for PEP violation for electron is 4.7 ×10-29set by the VIP experiment. With upgraded detectors for high precision X-ray spectroscopy, the VIP-2 experiment will improve the sensitivity by 2 orders of magnitude.

[发布机构] INFN, Laboratori Nazionali di Frascati, Via E. Fermi 40, Frascati(Roma); F00044, Italy^1;CERN, Geneva 23; CH-1211, Switzerland^2;Stefan-Meyer-Institut für Subatomare Physik, Boltzmanngasse 3, Wien; 1090, Austria^3;IFIN-HH, Institutul National Pentru Fizica Si Inginerie Nucleara Horia Hulubbei, Reactorului 30, Magurele, Romania^4;Museo Storico della Fisica e Centro Studi e Ricerche Enrico Fermi, Piazza del Viminale 1, Roma; 05583, Italy^5;Institut de Physique UMR CNRS-UR1 6251, Université de Rennesl, Rennes; F-35042, France^6;Institut de Physique, Université de Neuchatel, 1 rue A.-L. Breguet, Neuchatel; CH-2000, Switzerland^7;INFN, Laboratori Nazionali Del Gran Sasso, S.S. 17/bis, Assergi (AQ); 1-67010, Italy^8;Dipartimento di Fisicá, Universitá di Trieste, INFN, Sezione di Trieste, Via Valerio, 2, Trieste; 1-34127, Italy; (10) Universidade de Santiago de Compostela, Casas Reais 8, Santiago de Compostela; 15782, Spain; (11) Excellence Cluster Universe, Technische Universität München, Boltzmannstrabe 2, Garching; ON; D-85748, Germany^9

[效力级别] 天文学 [学科分类] 天文学(综合)

[关键词] Atomic state;Follow up;High-precision;Orders of magnitude;Pauli exclusion principle