Well, from Michele Redi at RealClearScience:
Hints of an unexpected new particle could be confirmed within days—and if it is, the Standard Model could be going down
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.
Maybe. Why does this remind me of the way the Toronto real estate market was about to crash and burn every year since 1950? Anyway:
The importance of this result is clear to everybody working in the field and it has immediately triggered a huge amount of work on the possible implications. None of the more fundamental models that currently exist as possible replacements for the SM can explain the bump. If the SM has fallen it is likely not for any reason we expected. If the new particle is real, it is absolutely unclear what might be its role in the greater scheme of things. Maybe it is related indirectly to the Higgs boson somehow, or maybe it is connected with the puzzle of dark matter in the universe. Or maybe it is just there by chance. Certainly these are questions that scientist will have to answer in the future and more data will help to understand what lies ahead. More.
The demand for revolutions so often outstrips the supply.
See also: How should we study nature?
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