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WIMPs are tiny, so they do not possess very many

Oct. 1, 2017 by Katherine Berry

WIMPs are tiny, so they do not possess very many electrons or positrons, and their mass is small. The team found that their detection of the dark system by an experiment using the WIMP signal is only 1 percent of the total number of WIMPs detected. The other team in Italy, led by the physicist and physicist-turned-science journalist Egonia Cervaro, showed that WIMPs don't exhibit a detectable dark energy when they are coupled to photons, making this detection a relatively simple and far-ranging test.

That's how you might interpret the results from an experiment involving hundreds of light-emitting diodes, or "diodes." As WIMPs are "bitterly interacting," they are known to have other properties that could explain their ability to attract ordinary matter. For example, they are able to form pairs of interacting particles that can't be separated by matter. However, those pairs of particles are so weakly interacting that they can only interact with the dark system with extremely large masses.

"The WIMP signal was confirmed by a very high degree of confidence, particularly when it was coupled to a detector of dark electrons, which is a very powerful signal," says Cervaro. "With this new result, we can now confidently conclude that the WIMP signal appears to have some dark energy. However, we now have a much clearer picture of what dark energy might be in the WIMP signal."

Cervaro says that this new finding is a significant improvement over previous work by scientists who have also been exploring the possibility of dark energy. A recent paper in Nature Physics and Chemistry called for a new interpretation of data of similar size, size, and behavior that could be used to resolve dark matter's origin.

A new paper in Science and Letters adds that the Italian team's experimental results do not support the idea that the WIMP signal is a result of dark matter. But this new observation suggests that the WIMP signal has come from the dark matter of something much bigger than WIMPs.

"If WIMPs exist, then they are the result of a combination of dark matter and dark energy. They are not the result of a single source of dark energy," says Cervaro, who has coauthored a paper called "Dark Matter and the Dark Matter of Light" in the journal Astrophysical Journal Letters. "The WIMP signal is certainly a result of the formation of dark