- UPDATE OF THE DIRECT DETECTION OF DARK MATTER AND THE ROLE OF THE NUCLEAR SPIN.
By V.A. Bednyakov (Dubna, JINR), H.V. Klapdor-Kleingrothaus (Heidelberg,MaxPlanck Inst.). Nov 2000. 16pp.
e-Print Archive: hep-ph/0011233
This is BKK, and this is the key figure.
Read 12/21/00. This paper explores the SUSY parameter space, and
keeps the parts of the space that are consistent with current collider
results as well as Big Bang production of visible and dark matter.
Fewer constraints from theory are applied than in the first of the
two recent works of Ellis, Ferstl, and Olive (EFO1). Nevertheless,
the conclusions summarized in Figure 3 are rather similar to EFO1:
cross sections tend to be beneath the sensitivity of CDMS-2.Actually,
EFO2 arrive at smaller cross sections than this paper (as shown in Figure 3),
but EFO2 arrives at very similar cross sections to this work. One
interesting observation is that when the scalar cross section gets very
small, the spin-dependent cross section can actually drive the counting
rate in detectors such as 73-Ge.
- NUCLEON SCATTERING WITH HIGGSINO AND WINO COLD DARK MATTER.
By Brandon Murakami (UC, Davis), James D. Wells (UC, Davis & LBL, Berkeley). UCD-2000-16, LBNL-47049, Nov 2000. 16pp.
e-Print Archive: hep-ph/0011082
Twoup version of the postscript
Read 12/21/00. Current thinking often is that the LSP is the Bino,
and this paper gives some perspective. The Bino has the lowest annihilation
cross section into our(R=+1) matter, and thus also the lowest scattering
cross section on our matter.Wino or Higgsino LSP's would have higher cross
sections, and thus, via thermal production in the Big Bang, lower present
abundance. So Wino or Higgsino LSP's would be too scarce to explain today's
Galactic rotation curves, unless a new Big Bang production mechanism exists.
The authors suggest new mechanisms, which could be caused by a new type of
SUSY breaking: anomaly-mediated supersymmetry breaking (AMSB); this breaking
mechanism could also result in a Wino and/or Higgsino LSP. The bonus for DM
experimenters would be the higher scattering cross section on our matter of
Winos or Higgsinos.The authors do nice computations of the scattering cross
sections. They also point out that Wino and Higgsino scenarios are harder
to discover at collider experiments than Bino scenarios.
- EXPLORATION OF ELASTIC SCATTERING RATES FOR SUPERSYMMETRIC DARK MATTER.
By John Ellis (CERN), Andrew Ferstl (Minnesota U.), Keith A. Olive (Minnesota U. & Minnesota U., Theor. Phys. Inst.). CERN-TH-2000-188, UMN-TH-1914-00, TPI-MINN-00-36, Jul 2000. 25pp.
e-Print Archive: hep-ph/0007113
This is EFO2, and this is the key figure
Read 12/21/00. An exploration of the SUSY space of parameters, constrained
by contemporary data, and focused on predictions in the plane of cross
section of neutralinos on nucleons versus mass of the LSP. Here, the
constraints on SUSY are not as strict as EFO1, because here they allow
sfermions and Higgs to have distinct masses at the unification scale.
The results are qualitatively similar to BKK, namely, that the dark
matter cross sections are nearly out of reach of CDMS-II.
INTRODUCTION TO SUPERSYMMETRY: ASTROPHYSICAL AND PHENOMENOLOGICAL
By Keith A. Olive (Minnesota U.). UMN-TH-1824-99, TPI-MINN-99-49, Nov 1999.
Based on lectures given at NATO Advanced Study Institute: Les Houches
Summer School: Session 72: Coherent Atomic Matter Waves, Les Houches,
France, 27 Jul - 27 Aug 1999.
e-Print Archive: hep-ph/9911307
Twoup. Two nice plots
are of the running masses of
sparticles, and one showing
regions of MSSM parameters that result in Binos and Higgsinos being
A SUSY review with a lot of emphasis on cosmology and dark matter.
A SUPERSYMMETRY PRIMER.
By Stephen P. Martin (Michigan U.). Sep 1997. 88pp.
In *Kane, G.L. (ed.): Perspectives on supersymmetry* 1-98.
e-Print Archive: hep-ph/9709356
Twoup, and S.P. Martin's
A very good survey of SUSY phenomenology. Briefly covers Dark Matter,
but good coverage of the underlying motivations.
ON IMPORTANCE OF DARK MATTER FOR LHC PHYSICS.
By V.A. Bednyakov (Dubna, JINR). Jun 2000. 12pp.
Talk given at International Symposium on LHC Physics and Detectors,
Dubna, Russia, 28-30 Jun 2000.
e-Print Archive: hep-ph/0011207
Two nice figures: rotation curve for the planets
of our solar system, and for the galaxy
NGC 6503. A nice overview.
LIGHT HIGGSINO DARK MATTER.
By Manuel Drees (Seoul National U.), Mihoko M. Nojiri (KEK, Tsukuba), D.P.
Roy (Tata Inst.), Youichi Yamada (Tohoku U.). APCTP-96-06, KEK-TH-505,
KEK-PREPRINT-96-156, TIFR-TH-96-62, TU-515, Dec 1996. 21pp.
Published in Phys.Rev.D56:276-290,1997
e-Print Archive: hep-ph/9701219
The PRD in PDF.
This paper focuses on Higgsino dark matter. Nominally, the cross
section for Higgsino annihilation into R=+1 matter is so large that
the abundance of Higgsino DM is thought to get too small. However,
this paper points out that loop corrections can alter the nominal
conclusion, and can maintain a high Higgsino density while enabling
a large cross section for scattering Higgsinos on our matter.
NEUTRALINO - NUCLEON SCATTERING REVISITED.
By Manuel Drees, Mihoko Nojiri (Wisconsin U., Madison). MAD-PH-768, Jun 1993.
Published in Phys.Rev.D48:3483-3501,1993 (Title changed in journal)
e-Print Archive: hep-ph/9307208
PDF of PRD Publication.
One of the papers that focuses on computing the cross section
and counting rate due to LSP interaction with a detector. The introduction
has a very nice survey of the history of estimates of the cross section
for neutralino interaction with matter. Ostensibly, this paper
addresses loop corrections to the original tree level work. However,
the conclusion has a nice discussion of the logical interrelationship
of dark matter searches and collider searches.
DETECTABILITY OF CERTAIN DARK MATTER CANDIDATES.
By Mark W. Goodman, Edward Witten (Princeton U.). Print-85-0030 (PRINCETON),
Nov 1984. 20pp.
Published in Phys.Rev.D31:3059,1985
PDF of PRD Publication.
One of the earlier papers that foces on computing the
cross section and counting rate due to LSP interaction with a detector.
SUPERSYMMETRIC RELICS FROM THE BIG BANG.
By John Ellis, J.S. Hagelin (SLAC), D.V. Nanopoulos, K. Olive, M. Srednicki (CERN). SLAC-PUB-3171, Jul 1983. 38pp.
Published in Nucl.Phys.B238:453-476,1984 (Reprinted in *Lindley, D. (ed.) et al.: Cosmology and particle physics* 32-55, and in *Abbott, L.F. (ed.), Pi, S.Y. (ed.): Inflationary cosmology* 140-163)
PDF of the SLAC PUB.
One of the very early papers to suggest that the LSP might be
the dark matter.