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Re:The World Doesn’t Need a New Gigantic Particle Collider by TheOtherHobbes on Sunday June 28, 2020 @12:35PM (#23669965)
It's just "Let's see what happens" - and that's why it's a bad idea.

LHC was justified as a search for the Higgs. The Higgs was found. Everyone was happy. Fine.

LHC 2.0++ is just banging rocks together for the sake of it. Something interest might fall out, or it might not.

But considering that we still don't understand quantum origins, have no clue how to make a theory of quantum gravity, and have no idea what Dark Energy is, or even if it exists at all, it might be better to spend the money on pursuing creative theoretical leads in those other directions and coming back to country-sized experimental hardware when there are some new theories to test.

Re:The World Doesn’t Need a New Gigantic Particle Collider by henearkr on Sunday June 28, 2020 @01:21PM (#23670359)
Today the axion is the new hypothetical fundamental particle that coincides with the status that had the Higgs boson two decades ago. It may very well be the next milestone.
Re:The World Doesn’t Need a New Gigantic Particle Collider by dnautics on Sunday June 28, 2020 @01:51PM (#23670604)
What's the particle energy range needed to make an observation about axions?
Re:The World Doesn’t Need a New Gigantic Particle Collider by henearkr on Sunday June 28, 2020 @01:55PM (#23670635)
Pretty tiny: 10−5 to 10−3 eV/c2

Though the utility of a big collider would be in diversifying the types of decays observed?

Re:The World Doesn’t Need a New Gigantic Particle Collider by seamyb88 on Sunday June 28, 2020 @01:30PM (#23670420)
Banging rocks together has been a very fruitful method which is always limited by the technology. Many physicists believe that the rock banging should be an ongoing exercise which itself guides the theoretical directions. They also believe that there is an almost guaranteed chance of finding something, if their advances to higher energy are achieved.

All we need is one anomaly in the vast data processing. There are many things which are expected to be seen at higher energies. If they are not seen, it still says a great deal and will guide theoretical discussion.