Why no black holes ?

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Offline syhprum

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Why no black holes ?
« on: 19/12/2010 21:03:03 »
It may come as a dissapointment or a matter of relief that the recent 7 TV run of the LHC has shown no signs of mini black holes.

http://www.physorg.com/news/2010-12-large-hadron-collider-signatures-microscopic.html
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Offline Soul Surfer

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Why no black holes ?
« Reply #1 on: 20/12/2010 13:00:04 »
Why?  I would be extremely surprised if the signature of the decay of a small black hole was detected. A quick calculation will show that he energies involved even with lead nuclei at  7Tev  that the total centre of mass energy available  is around 10,000,000,000 times less than one Planck mass this is just about the smallest black hole you can think about because it is a planck unit across and lasts a planck time before blowing up. The total energy is far too small to get anywhere near creating a tiny black hole.  I don't know why it was even suggested that it could be possible.
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