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'But the reason it's been hard to find is that its interactions are very feeble. 'The particle is not very heavy, and laboratories have had the energies required to make it since the '50s and '60s,' he said.

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This means the cosmos should be full of light and little else.īut because it isn't there must have been a subtle difference in the physics of matter and anti-matter that has left the universe with a surplus of matter and that makes up the stars we see, the planet we live on and ourselves.īut the observations seen so far are not enough to confirm the existence of a particle. Nobody has managed to make the two mathematically compatible in the context of the Standard Model.Īccording to the Big Bang theory, matter and antimatter were created in equal amounts at the start of the universe and so they should have annihilated each other totally in the first second or so of the universe's existence.

The quantum theory used to describe the small particles in the world, and the general theory of relativity used to describe the larger objects world, are also difficult to reconcile. It can't explain gravity, for example, because it is incompatible with our best explanation of how gravity works - general relativity, nor does it explain dark matter particles.

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This development was exciting because the Standard Model has left some questions unanswered for years, so scientists are keen to break free of it and find new theories. This new particle, if it exists, would not fit into the description given by the Standard Model and so would lead to a whole new area of particle physics. Some have suggested it might even lead to the discovery of a fifth fundamental force. The forces work over different ranges and have different strengths. The Standard Model says everything in the universe is made from the most basic building blocks called fundamental particles, that are governed by four forces: gravity, electromagnetic, weak nuclear and strong nuclear. 'They simply saw an excess of events that indicated a new particle, but it was not clear to them whether it was a matter particle or a force-carrying particle.' 'The experimentalists weren't able to claim that it was a new force,' Feng said.

The Hungarians' work uncovered a radioactive decay anomaly that points to the existence of a light particle just 30 times heavier than an electron.

The new research, published in the journal Physical Review Letters, analysed a mid-2015 study by experimental nuclear physicists at the Hungarian Academy of Sciences who were searching for 'dark photons,' particles that would signify unseen dark matter, which physicists say makes up about 85 percent of the universe's mass. The new research, published in the journal Physical Review Letters, analysed a mid-2015 study by experimental physicists in Hungary searching for 'dark photons.' It comes just weeks after researchers at the Large Hadron Collider admitted readings they had thought could have been an intriguing new particle has turned out just to be a 'statistical burp'.