The Model of the Dark Axion Portal (image) Institute for Basic Science Share Print E-Mail Caption The new heavy quark is an essential component of many axion models. If this particle has both electromagnetic and dark charges, an axion can interact with the photon and dark photon simultaneously through the heavy quark. While the current axion dark matter search is based on the axion--photon--photon coupling, the new axion--photon--dark photon coupling may provide new search schemes for dark matter. Credit IBS Usage Restrictions None Share Print E-Mail 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.