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DAMA and WIMP dark matter

Petriello, Frank J. and Zurek, Kathryn M. (2008) DAMA and WIMP dark matter. Journal of High Energy Physics, 2008 (9). Art. No. 47. ISSN 1029-8479. doi:10.1088/1126-6708/2008/09/047.

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We study whether spin-independent scattering of weakly-interacting massive particles (WIMPs) with nuclei can account for the annual modulation signal reported by DAMA. We consider both elastic and inelastic scattering processes. We find that there is a region of WIMP parameter space which can simultaneously accommodate DAMA and the null results of CDMS, CRESST, and XENON. This region corresponds to an ordinary, elastically-scattering WIMP with a standard Maxwell-Boltzmann distribution, a mass 3 GeV ≾ m_(DM) ≾ 8 GeV, and a spin-independent cross section with nucleons 3 × 10^(−41) cm^2 ≾ σ_p^(SI) ≾ 5 × 10^(−39) cm^2. This new region of parameter space depends crucially on the effect of channeling on the energy threshold for WIMP detection in the DAMA experiment; without the inclusion of this effect, the DAMA allowed region is essentially closed by null experiments. Such low-mass WIMPs arise in many theories of Beyond the Standard Model physics, from minimal extensions of the MSSM to solutions of the baryon-dark matter coincidence problem. We find that inelastic scattering channels do not open up a significant parameter region consistent with all experimental results. Future experiments with low energy thresholds for detecting nuclear recoils, such as CDMSII-Si and those utilizing ultra-low energy germanium detectors, will be able to probe the DAMA region of parameter space.

Item Type:Article
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Additional Information:© SISSA/ISAS 2008. Received: July 15, 2008. Accepted: September 4, 2008. Published: September 9, 2008. We thank H. T. Wong for helpful correspondence regarding the TEXONO experiment, and J. Collar for comments and helpful communication regarding ultra-low energy germanium detectors. The authors are supported by the DOE grant DE-FG02-95ER40896, Outstanding Junior Investigator Award, by the University of Wisconsin Research Committee with funds provided by the Wisconsin Alumni Research Foundation, and by the Alfred P. Sloan Foundation.
Funding AgencyGrant Number
Department of Energy (DOE)DE-FG02-95ER40896
Wisconsin Alumni Research FoundationUNSPECIFIED
Alfred P. Sloan FoundationUNSPECIFIED
Subject Keywords:Beyond Standard Model, Cosmology of Theories beyond the SM
Issue or Number:9
Record Number:CaltechAUTHORS:20190611-125827807
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Official Citation:Frank J. Petriello and Kathryn M. Zurek JHEP09(2008)047
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:96294
Deposited By: George Porter
Deposited On:12 Jun 2019 19:42
Last Modified:12 Jul 2022 19:48

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