Colloquium by Jonathan Feng - Fermilab Center for Particle ...

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• This all assumes the WIMP is stable • How natural is this? STABILITY New Particle States Stable Standard Model Particles 23 Mar 11 Feng 10
LEP’S COSMOLOGICAL LEGACY Gauge Hierarchy requires Higgs new particle Higgs Precision EW excludes SM SM SM SM • Simple solution: impose a discrete parity, so all interactions require pairs of new particles. This also makes the lightest new particle stable: LEP constraints ↔ Discrete Symmetry ↔ Stability Cheng, Low (2003); Wudka (2003) • The result: dark matter is easier to explain than no dark matter, and the WIMP paradigm is more natural than ever before, leading to a proliferation of candidates 23 Mar 11 Feng 11 new particle
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: 23 Mar 11 THE WIMP MIRACLE 10-3 σ0
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 and 34: WARM SUPERWIMPS • SuperWIMPs are
Page 35 and 36: • In SUSY, however, there may be
Page 37: CONCLUSIONS • Particle Dark Matte

Colloquium by Jonathan Feng - Fermilab Center for Particle ...

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