Colloquium by Jonathan Feng - Fermilab Center for Particle ...
Colloquium by Jonathan Feng - Fermilab Center for Particle ... Colloquium by Jonathan Feng - Fermilab Center for Particle ...
HIDDEN DARK MATTER • Hidden sectors are composed of particles without SM interactions (EM, weak, strong) SM Hidden X • Dark matter may be in such a sector – Interesting self-interactions, astrophysics – Less obvious connections to particle physics – No WIMP miracle Spergel, Steinhardt (1999); Foot (2001) 23 Mar 11 Feng 34
• In SUSY, however, there may be additional structure. E.g., in GMSB, AMSB, the masses satisfy m X ~ g X 2 • This leaves the relic density invariant • “WIMPless Miracle”: hidden sectors of these theories automatically have DM with the right Ω (but they aren’t WIMPs) • Is this what the new physics flavor problem is telling us?! 23 Mar 11 THE WIMPLESS MIRACLE Feng, Kumar (2008); Feng, Tu, Yu (2009) WIMPs WIMPless DM Feng 35
- Page 1 and 2: WIMP PARADIGM: CURRENT STATUS FNAL
- Page 3 and 4: THE COSMIC CONNECTION, c. 1977 “O
- Page 5 and 6: DARK MATTER Known DM properties •
- Page 7 and 8: 23 Mar 11 THE WEAK MASS SCALE • F
- Page 9 and 10: 23 Mar 11 THE WIMP MIRACLE 10-3 σ0
- Page 11 and 12: LEP’S COSMOLOGICAL LEGACY Gauge H
- Page 13 and 14: INDIRECT DETECTION Dark Matter anni
- Page 15 and 16: ARE THESE DARK MATTER? • Energy s
- Page 17 and 18: DIRECT DETECTION • Can look for n
- Page 19 and 20: LOWER LIMIT ON DIRECT DETECTION •
- Page 21 and 22: LOW MASS FRONTIER Collision rate sh
- Page 23 and 24: SPIN-DEPENDENT SCATTERING 23 Mar 11
- Page 25 and 26: CURRENT BOUNDS FOR SUSY Yellow: pre
- Page 27 and 28: 23 Mar 11 THE SIGNIFICANCE OF 10 -4
- Page 29 and 30: BEYOND WIMPS • Does the WIMP para
- Page 31 and 32: FREEZE OUT WITH SUPERWIMPS WIMPs fr
- Page 33: WARM SUPERWIMPS • SuperWIMPs are
- Page 37: CONCLUSIONS • Particle Dark Matte
HIDDEN DARK MATTER<br />
• Hidden sectors are composed of particles without<br />
SM interactions (EM, weak, strong)<br />
SM<br />
Hidden<br />
X<br />
• Dark matter may be in such a sector<br />
– Interesting self-interactions, astrophysics<br />
– Less obvious connections to particle physics<br />
– No WIMP miracle Spergel, Steinhardt (1999); Foot (2001)<br />
23 Mar 11 <strong>Feng</strong> 34
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