Schematic Illustration of Anyons (IMAGE) ICFO-The Institute of Photonic Sciences Caption When the energy levels of a quantum system are filled, fermionic particles exclude each other, whereas bosonic matter can accumulate in the lowest level. In contrast, anyons behave in an intermediate fashion. The paper shows how the anyons' statistical parameter alpha can be detected from the angular momentum of impurity particles attached to the anyons. Credit ICFO Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.