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The question is if modern particle accelerators (or cosmic rays for that matter) can create black holes. Has those events been detected? If not, how far are we in terms of orders of magnitude energy? Bonus question: is creating black holes scientifically interesting?

I've read this question, but the accepted answer is about string theory and politics. My question is about energies and devices required.

Qmechanic
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Quoting from Micro black hole - Minimum mass of a black hole:

In principle, a black hole can have any mass equal to or above about $2.2\times 10^{−8}$ kg or $22$ micrograms (the Planck mass).

Given this Planck mass (or the corresponding Planck energy $1.2\times 10^{19}$ GeV) it is far out of reach with any human particle accelerator technology.

  • Wikipedia page you've linked also provides a paragraph on human-made micro black holes, thank you. – FunkyLoiso Nov 13 '20 at 10:52
  • Please note that LHC experiments still check the large extra dimensions model of string theories, where micro black holes are expected (despite the planck limit in your answer) Here are limits from one experiment in the latest data "In the context of models with large extra dimensions,semiclassical black holes with minimum masses as high as 10.1 TeV and string balls with masses as high as 9.5 TeV are excluded by this search ". https://cds.cern.ch/record/2318378/files/scoap3-fulltext.pdf – anna v Nov 13 '20 at 12:24