Mysterious Particle Called GLUEBALL

Scientists have long been on the lookout for 'glueballs', which are bound states of subatomic gluon particles on their own, without any quarks involved. Now, we may just have found them, hiding away in a particle accelerator experiment.


It promises to be a hugely significant breakthrough in physics, but for the benefit of everyone without a PhD in the subject, we'll start at the beginning. The main job of gluons is to hold quarks in place and keep atoms stable – quarks being the building blocks that make up protons and neutrons.


This role makes the gluon part of the strong nuclear force – one of the four fundamental forces of nature that hold the laws of physics together, along with gravity, electromagnetism, and the weak nuclear force.     READ MORE...READ MORE...

Preventing Our Universe From Collapsing

Physicists have proposed our universe might be a tiny patch of a much larger cosmos that is constantly and rapidly inflating and popping off new universes. In our corner of this multiverse, the mass of the Higgs boson was low enough that this patch did not collapse like others may have. (Image credit: MARK GARLICK/SCIENCE PHOTO LIBRARY via Getty Images)

The Higgs boson, the mysterious particle that lends other particles their mass, could have kept our universe from collapsing. And its properties might be a clue that we live in a multiverse of parallel worlds, a wild new theory suggests.

That theory, in which different regions of the universe have different sets of physical laws, would suggest that only worlds in which the Higgs boson is tiny would survive.

If true, the new model would entail the creation of new particles, which in turn would explain why the strong force — which ultimately keeps atoms from collapsing — seems to obey certain symmetries. And along the way, it could help reveal the nature of dark matter — the elusive substance that makes up most matter.

A tale of two Higgs
In 2012, the Large Hadron Collider achieved a truly monumental feat; this underground particle accelerator along the French-Swiss border detected for the first time the Higgs boson, a particle that had eluded physicists for decades. The Higgs boson is a cornerstone of the Standard Model; this particle gives other particles their mass and creates the distinction between the weak nuclear force and the electromagnetic force.

But with the good news came some bad. The Higgs had a mass of 125 gigaelectronvolts (GeV), which was orders of magnitude smaller than what physicists had thought it should be.

To be perfectly clear, the framework physicists use to describe the zoo of subatomic particles, known as the Standard Model, doesn't actually predict the value of the Higgs mass. For that theory to work, the number has to be derived experimentally. But back-of-the-envelope calculations made physicists guess that the Higgs would have an incredibly large mass. So once the champagne was opened and the Nobel prizes were handed out, the question loomed: Why does the Higgs have such a low mass?  READ MORE...