Researchers from the University of Bern presented the results of the Beam EDM experiment to search for dark particles
Devices used in the processexperiment, determine the spin frequency of neutrons that move through a superposition of electric and magnetic fields, the scientists explain. The rotation of each individual neutron resembles a compass needle, which rotates due to the magnetic field like the second hand of a wrist watch. In just one minute, it makes almost 400 thousand revolutions.
We accurately measured the frequency of these rotations andchecked it for the presence of the smallest periodic oscillations, which can be caused by interaction with axions. The rotation frequency of the neutrons remained unchanged, which means that there is no sign of axions in our measurements.
Florian Piegsa, Professor of Low Energy Physics and Precision Physics at the University of Bern
The researchers note that althoughThis experiment failed to detect dark energy particles, it is of great importance for science. As a result of the work, it was possible to significantly narrow down the possible parameters of dark matter, if it exists. New experiments should be designed to explore other areas.
Based on cosmological observations, scientistsconsider that visible matter is not enough to explain the development or movement of galaxies. Therefore, modern cosmological theory assumes the existence of alternative dark matter, which does not participate in electromagnetic interactions, and therefore remains invisible.
Axions are one of the hypothetical candidates forthe role of the particle constituting dark matter. The existence of these extremely light particles would explain other important phenomena in particle physics, but so far scientists have not been able to detect them.
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