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Then Marumi Kado from ATLAS steps up, with a strangely confident look in his eye—and when the results finally flash on the screen, the audience understands why. ATLAS has seen the bump too, at the same point as CMS did, but now it’s so prominent that you can’t miss it. This really does look like a new particle, and if it is, there is suddenly an enormous crack at the very heart of high-energy physics.
The signal is one of the simplest you can imagine: it represents two high energy photons emerging from the decay of a subatomic particle created in a proton-proton collision. It’s very similar to the signal that led to the discovery of the Higgs boson in 2012. But this particle is not the Higgs boson: it is six times more massive. Nobody had predicted anything like this. It is shocking to the physicists in the auditorium. People look around, astonished, trying to confirm that their own reactions are reflected in what they see in their colleagues’ faces. If the observations are confirmed, it will be revolutionary. This could mean nothing less than the fall of the Standard Model of particle physics (SM), which has passed every experimental test thrown at it since it was first put together over four decades ago.
The SM describes what the building blocks of the universe are and how they work, and from there, at least in principle, explains every other phenomenon in nature. Originally theorists thought that the SM would be an approximation of a more fundamental theory that would be quickly discovered. This is what has always happened in the past. Newton’s theory of gravity, for example, doesn’t apply to bodies that are extremely massive, or which are moving close to the speed of light. It is accurate enough that engineers could use it to send the New Horizons space probe toward Pluto and have it arrive in just the right place nine years later. Einstein’s theory of General Relativity, however, is more fundamental, and applies in those extreme where Newton’s theory breaks down.
Moreover, there are many reasons to believe that the SM is incomplete. In particular, the mechanism that generates the mass of the elementary particles suggests that the theory must be modified at higher energies. To discover this new physics was the number one motivation for the construction of the LHC and several other experiments before that.
To theorists’ surprise, however, the SM has performed much better than originally expected. This has been both a blessing and a curse for particle physics for many years. On one hand, the discovery of the Higgs boson was an enormous success, identifying the SM’s last, and arguably most important, building block. On the other, the fact that the Higgs has just the mass and all the properties everyone expected generated a widespread pessimism about new discoveries. The search for a more fundamental theory might drag on indefinitely.
But the bumps in the ATLAS and CMS data, which showed up at an energy of 750 billion electron-volts (GeV), would completely change this situation overnight, making it virtually certain that more discoveries will be coming during coming years. If the hint of a new particle is real, the successes of the SM suddenly will have come to an end.

Its not certain yet- but this could be the start of a new era in Physics…
Contrary to what some claim- scientists get no bigger thrill than when finding a point where established theory breaks down…