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Spin-dependent WIMPs in DAMA?

Ullio, Piero and Kamionkowski, Marc and Vogel, Petr (2001) Spin-dependent WIMPs in DAMA? Journal of High Energy Physics, 2001 (07). Art. No. 044. ISSN 1126-6708.

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We investigate whether the annual modulation observed in the DAMA experiment can be due to a weakly-interacting massive particle (WIMP) with an axial-vector (spin-dependent; SD) coupling to nuclei. We evaluate the SD WIMP-proton cross section under the assumption that such scattering accounts for the DAMA modulation, and we do the same for a SD WIMP-neutron cross section. We show that SD WIMP-proton scattering is ruled out in a model-independent fashion by null searches for energetic neutrinos from WIMP annihilation in the Sun, and that SD WIMP-neutron scattering is ruled out for WIMP masses gtrsim20 GeV by the null result with the DAMA Xe detector. A SD WIMP with mass lesssim20 GeV is still compatible, but only if the SD WIMP-neutron interaction is four orders of magnitude greater than the WIMP-proton interaction.

Item Type:Article
Kamionkowski, Marc0000-0001-7018-2055
Vogel, Petr0000-0003-0587-5466
Additional Information:© 2001 SISSA Received 8 July 2001, accepted for publication 27 July 2001. Published 9 August 2001 We thank J. Edsjö for useful discussions. This work was supported in part by NSF AST-0096023, NASA NAG5-8506, and DoE DE-FG03-92-ER40701 and DE-FG03-88-ER40397.
Funding AgencyGrant Number
Department of Energy (DOE)DE-FG03-92-ER40701
Department of Energy (DOE)DE-FG03-88-ER40397
Subject Keywords:Dark Matter, Supersymmetric Standard Model
Issue or Number:07
Record Number:CaltechAUTHORS:ULLjhep01a
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:4839
Deposited By: Archive Administrator
Deposited On:11 Sep 2006
Last Modified:03 Mar 2020 13:01

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