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Shadow of dark matter

Profumo, Stefano and Sigurdson, Kris (2007) Shadow of dark matter. Physical Review D, 75 (2). Art. No. 023521. ISSN 2470-0010.

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We carry out a model independent study of resonant photon scattering off dark matter (DM) particles. The DM particle chi1 can feature an electric or magnetic transition dipole moment which couples it with photons and a heavier neutral particle chi2. Resonant photon scattering then takes place at a special energy Egammares set by the masses of chi1 and chi2, with the width of the resonance set by the size of the transition dipole moment. We compute the constraints on the parameter space of the model from stellar energy losses, data from SN 1987A, the Lyman-alpha forest, big bang nucleosynthesis, electroweak precision measurements, and accelerator searches. We show that the velocity broadening of the resonance plays an essential role for the possibility of the detection of a spectral feature originating from resonant photon-DM scattering. Depending upon the particle setup and the DM surface mass density, the favored range of DM particle masses lies between tens of keV and a few MeV, while the resonant photon absorption energy is predicted to be between tens of keV and a few GeV.

Item Type:Article
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URLURL TypeDescription
Profumo, Stefano0000-0002-9159-7556
Sigurdson, Kris0000-0002-6729-0765
Additional Information:© 2007 The American Physical Society. (Received 6 November 2006; published 25 January 2007) We thank John Beacom and Christopher Hirata for insightful comments on an earlier draft of this manuscript. We thank Vincenzo Cirigliano, Shane Davis, Mikhail Gorshteyn, Tesla Jeltema, Marc Kamionkowski, and Enrico Ramirez-Ruiz for related discussions. S.P. is supported in part by DoE Grants No. DE-FG03-92-ER40701 and No. DE-FG02-05ER41361, and NASA Grant No. NNG05GF69G. K.S. is supported by NASA through Grant No. HST-HF-01191.01-A awarded by the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., for NASA, under Contract No. NAS 5-26555.
Funding AgencyGrant Number
Department of Energy (DOE)DE-FG03-92-ER40701
Department of Energy (DOE)DE-FG02-05ER41361
NASA Hubble FellowshipHST-HF-01191.01-A
NASANAS 5-26555
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Record Number:CaltechAUTHORS:PROprd07a
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:7310
Deposited By: Archive Administrator
Deposited On:29 Jan 2007
Last Modified:02 Oct 2019 23:40

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