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Why the LHC May Mean the End of Experimental Particle Physics
StartsWithABang writes: At the end of the 19th century, Lord Kelvin famously said, "There is nothing new to be discovered in physics now. All that remains is more and more precise measurement." He was talking about how Newtonian gravity and Maxwell's electromagnetism seemed to account for all the known phenomena in the Universe. Of course, nuclear physics, quantum mechanics, general relativity and more made that prediction look silly in hindsight. But in the 21st century, the physics of the Standard Model describes our Universe so well that there truly may be nothing else new to find not only at the LHC, but at any high-energy particle collider we could build here on Earth. If there are no new particles found below about 2–3 TeV in energy—particles that the LHC should detect if they’re present—it’s a reasonable assumption that there might not be anything new to find until energy scales of 100,000,000 TeV or more. And even if we build a particle accelerator to the fullest capacity of our technology around the equator of the Earth, we still couldn’t reach those energies.
So, StartsWithABang starts by telling us that Lord Kelvin was a fool for thinking there was nothing left to discover and then he goes on to say practically the same thing.
I see.
Not quite, he's saying there's lots left to discover. There just might not be anything left for the LHC to discover.
I suspect even that is false, that there will be all kinds of science to be done with it. But it may be true we don't discover any new particles with it by smashing things together, which is the thing it was built for.