RE: Particle physics @ Utopian-io - Designing an LHC search strategy for unraveling new phenomena by procrastilearner

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· @procrastilearner ·
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> This is in particular crucial for what concerns dark matter, as dark matter is invisible.

Do we know that dark matter is 100.00000% invisible?

Could it be 99.9999% invisible? That is, the electromagnetic coupling constant is small but still there? (I have such a shit memory, I may have already asked you this).
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@lemouth ·
> Do we know that dark matter is 100.00000% invisible?

It depends on the definition of *invisible*. Dark matter  is invisible at the level of an LHC detector. It will leave no track in it. We will just 'see' something missing (deduced from energy conservation). Dark matter is also not electromagnetically interacting. In this way, it could be seen as invisible as electromagnetism is connected to light.

I assume I more or less answered the second question too, didn't I? :)
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