The theory speculates that there should be a certain kind of particles of dark matter that would occasionally kill people. Such a piece of dark matter would go through people like a sphere, a new study claimed. But because no one died because of such unexplained firing-like wounds, this kind of dark matter does not exist. However, there are other ways to detect this particular type of dark matter and researchers should continue to look for, says Professor Katherine Freese of the University of Texas, who was not involved in the study.
She said: "We do not know what a dark matter is, so we should not write things.
Dark matter accounts for about 85 percent of the mass of the universe, but the substance itself remains a mystery.
One theory suggests that the dark matter consists of weakly interacting solid particles.
These particles would be abundant, but they could not cooperate with a regular substance that could only be detected by very sensitive detectors – so far without success.
The less mainstream candidate for a dark matter, known as the macro, would form heavier particles.
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Although macros would be much less likely than their competitors, any kind of collision with a casual case would be violent and would leave obvious evidence.
A breakthrough new study explores what could be followed if people encountered these macro particles.
Dr. Glenn Starkman and Jagjit Singh Sidhu, theoretical physicists at Case Western Reserve University in Cleveland, Ohio, searched for traces of macro in granite plates when Professor Robert Scherrer suggested, "Why can not you use people as a detector?
"The energy you are talking about, these things are likely to free the person at best, but in the worst case, they would kill the person."
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The team advanced with the idea and formed macros that would have a similar effect to a fatal shot from a caliber rifle .22.
Such particles would be small, but very heavy, and thus release the same amount of energy and sphere as it passes through a person.
Their calculations focused on millions of people living in Canada, the US and Western Europe over the last decade, as these countries have reliable death information.
In this sample, scientists would expect to see some reports of unexplained fatalities from invisible dark substances.
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These deaths would not remain unnoticed – the victims would have died or died with a tubular wound, where their flesh would have evaporated.
This experiment does not exclude heavy macro dark matter, says Professor Scherrer. Removes only a certain amount.
A harder macro dark substance would not appear often enough to measure it, notes Freese and other forms would not kill people.
"There is probably a lot of space for a very heavy dark matter," says Paolo Gorla, a physicist in particles at the Italian National Laboratory Gran Sasso, who did not participate in the study.