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The article can be found herehttp://physics.aps.org/articles/v6/40
A cold Dark Matter particle being 250 to 300 times heavier than the proton must produce black holes or other strange objects...
You can't compare the sizes of elementary particles to atoms sizes.
Dark matter particles don't interact with EM, only weakly and gravitationally, they don't form atoms.
A hypernova does form a black hole from a starting radius much larger than the Schwarzschild radius
The long awaited and trailed announcement from the AMS Collaboration is here SPECIAL CERN-EP Seminar on Wednesday 3rd of April 2013 "Recent results from the AMS experiment" by Prof. Samuel TING (Massachusetts Inst. Of Technology (US))https://indico.cern....y?confId=244334
It is all about likelihood.First, the only known dark matter particles are the neutrinos. This is the first track.Second, not interacting with the EM and the strong forces is a strong evidence that it should be found as an elementary particle. It is what they are looking for.Third, the size of an elementary particle is related to the Compton or De Broglie wavelength, this is standard QM, fool proof. Meaning the size is smaller as mass increases. So the size of 300 GeV dark matter elementary particle is smaller than the size of the proton by more than a factor of 300 because the proton is not elementary.
Four, in all experiments to date, none have seen a hint of a dark matter particle but the neutrinos.
Five, if there is five times the amount of dark matter over matter, it is easy to guess that this dark matter is pretty stable... Like proton and electron, and neutrinos... From basic physics, the likelihood of finding a stable dark matter particle decrease with mass, most certainly at higher mass than the proton mass because of the high density objects it could produce and not observed. Like i said, it is all about likelihood...
The Compton wavelength and the De Broglie wavelength are two parts of the same element. The first is the wave of a free elementary particle at rest (producing quantized spin and magnetic moment) and the second is the wave of its momentum, related to the path in Bohm-De Broglie interpretation. De Broglie wavelength is an extension of Compton wavelength.http://en.wikipedia.org/wiki/Compton_wavelengthhttp://en.wikipedia.org/wiki/Electron_diffraction
You can say that CDM (cold dark matter) could form tiny solar system-like atoms which are stable enough and only binded by gravity. You would be right for CDM in vacuum, but what would happen inside planets and stars? This is where comes from the unlikelihood of a heavy CDM particle.Yes, I was dogmatic by using "must". I should have used "could". In theoretical science, we should never use "must" but "could". Sorry Matt!