Astronomy and Astrophysics – Astrophysics
Scientific paper
2004-08-19
Phys.Rev. D70 (2004) 123513
Astronomy and Astrophysics
Astrophysics
11 pages, 5 figures. v2: added Baksan results, added references, other minor changes. v3: minor changes to match PRD version
Scientific paper
10.1103/PhysRevD.70.123513
We examine whether the annual modulation found by the DAMA dark matter experiment can be explained by Weakly Interacting Massive Particles (WIMPs), in light of new null results from other experiments. CDMS II has already ruled out most WIMP-nucleus spin-independent couplings as an explanation for DAMA data. Hence we here focus on spin-dependent (axial vector; SD) couplings of WIMPs to nuclei. We expand upon previous work by (i) considering the general case of coupling to both protons and neutrons and (ii) incorporating bounds from all existing experiments. We note the surprising fact that CMDS II places one of the strongest bounds on the WIMP-neutron cross-section, and show that SD WIMP-neutron scattering alone is excluded. We also show that SD WIMP-proton scattering alone is allowed only for WIMP masses in the 5-13 GeV range. For the general case of coupling to both protons and neutrons, we find that, for WIMP masses above 13 GeV and below 5 GeV, there is no region of parameter space that is compatible with DAMA and all other experiments. In the range (5-13) GeV, we find acceptable regions of parameter space, including ones in which the WIMP-neutron coupling is comparable to the WIMP-proton coupling.
Freese Katherine
Gondolo Paolo
Savage Christopher
No associations
LandOfFree
Can WIMP Spin Dependent Couplings explain DAMA data, in light of Null Results from Other Experiments? does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Can WIMP Spin Dependent Couplings explain DAMA data, in light of Null Results from Other Experiments?, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Can WIMP Spin Dependent Couplings explain DAMA data, in light of Null Results from Other Experiments? will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-83593