The researchers say there are already a number of experiments that can be used to detect dark matter.
Dark matter represents about 85% of our Universe, and yet, over time, scientists have failed to directly establish its existence or what it is made of. A recent study proposes to identify these particles by studying the signals produced by the collision of dark matter particles by atomic nuclei, which should take the form of an electron or other energized particles.
The researchers who collaborated in this study explain that so far a series of experiments have been proposed and even performed that could detect these signals, notes Phys. One of these experiments was designed to detect dark matter using neutrinos, subatomic particles with a mass close to zero and that interact sporadically with ordinary matter.
“In this area, we had a number of ideas about the most likely candidates for dark matter, such as WIMP, or weakly interacting massive particles,” said Dr. Jeff Dror, lead author and postdoctoral researcher at the Center for Physics. University of California Berkeley. He adds: “The paradigm of weakly interacting massive particles is very easy to build in the standard model, but we have not been able to implement it.”
“It is easy, with small changes in the paradigm of massive particles to integrate a completely different type of signal […] We can make great progress, at very low cost, if we take a step back and consider the way we think about dark matter, ”says Dr. Dorr.
Researchers are considering the use of a phenomenon called “neutral current”, in which the atomic nuclei in the materials used produce energy signatures when they come in contact with dark matter. Also, theoretically, this collision between dark matter and atomic nuclei leads to the ejection of several types of subatomic particles, a process we know as nuclear degradation.
“One of the biggest questions in the field is the nature of dark matter. We do not know what it is made of, but the answer to this question may be available to us in the near future. For me, this is a huge motivation to continue going further, there is a new field of physics somewhere “, Dror explains.
The study was published in Physical Review Letters.
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