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

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DARK MATTER CANDIDATES • The observational constraints are no match for the creativity of theorists • Masses and interaction strengths span many, many orders of magnitude, but masses near the weak scale m weak ~ 100 GeV are especially motivated HEPAP/AAAC DMSAG Subpanel (2007) 23 Mar 11 Feng 6
23 Mar 11 THE WEAK MASS SCALE • Fermi’s constant GF introduced in 1930s to describe beta decay n → p e − ν • G F ≈ 1.1 · 10 -5 GeV -2 a new mass scale in nature m weak ~ 100 GeV • We still don’t understand the origin of this mass scale, but every attempt so far introduces new particles at the weak scale _ Feng 7
Page 1 and 2: WIMP PARADIGM: CURRENT STATUS FNAL
Page 3 and 4: THE COSMIC CONNECTION, c. 1977 “O
Page 5: DARK MATTER Known DM properties •
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 and 34: WARM SUPERWIMPS • SuperWIMPs are
Page 35 and 36: • In SUSY, however, there may be
Page 37: CONCLUSIONS • Particle Dark Matte

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