Colloquium by Jonathan Feng - Fermilab Center for Particle ...
Colloquium by Jonathan Feng - Fermilab Center for Particle ...
Colloquium by Jonathan Feng - Fermilab Center for Particle ...
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23 Mar 11<br />
THE WIMP MIRACLE<br />
10-3 σ0 10-1 10<br />
σ0 -2 σ0 σ 0<br />
10 σ 0<br />
102 σ0 103 σ0 • The relation between Ω X and<br />
annihilation strength is wonderfully<br />
simple:<br />
• m X ~ 100 GeV, g X ~ 0.6 Ω X ~ 0.1<br />
• Remarkable coincidence: particle physics independently<br />
predicts particles with the right density to be dark matter<br />
X<br />
X<br />
q<br />
_<br />
q<br />
<strong>Feng</strong> 9
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