Inelastic dark matter

By David Smith, N. Weiner. 2001

181 citations recorded by the source corpus.

Many observations suggest that much of the matter of the universe is nonbaryonic. Recently, the DAMA NaI dark matter direct detection experiment reported an annual modulation in their event rate consistent with a WIMP relic. However, the Cryogenic Dark Matter Search (CDMS) Ge experiment excludes most of the region preferred by DAMA. We demonstrate that if the dark matter can only scatter by making a transition to a slightly heavier state ({Delta}m{approx}100 keV), the experiments are no longer in conflict. Moreover, differences in the energy spectrum of nuclear recoil events could distinguish such a scenario from the standard WIMP scenario. Finally, we discuss the sneutrino as a candidate for inelastic dark matter in supersymmetric theories.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/524f5c69d533bbcb31544900259ff785ddb6ffc4

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In Astronomy and Astrophysics

1. Romain Teyssier
2. C. Arina
3. Jure Zupan
4. Joachim Kopp
5. F. Ling
6. E. Nezri
7. E. Athanassoula
8. Lian-tao Wang

In Nuclear and High Energy Physics

1. M. Lisanti
2. Jonathan L. Feng
3. Joachim Kopp
4. T. Schwetz
5. C. Arina
6. Jure Zupan
7. F. Ling
8. JiJi Fan

Citations in the corpus

• Non-relativistic effective theory of dark matter direct detection (2010, background): “J C A P 1 1 ( 2 0 1 0 ) 0 4 2 out in the context of inelastic DM [1, 2] and form factor DM [3, 4].”
• Global interpretation of direct Dark Matter searches after CDMS-II results (2009, background): “The case of inelastic spin-independent (iSI) scattering of a DM particle to a nearly degenerate excited state [18] is also tightly constrained, especially by CRESST-II [19] and ZEPLIN-III [20], c.”
• Dark Matter Candidates from Particle Physics and Methods of Detection (2010, background): “Inelastic scattering, in which dark matter is assumed to scatter through X SM → X ′ SM, where X ′ is another new particle that is ∼ 100 keV heavier than X, has been put forward as one solution (80).”
• Non-abelian dark sectors and their collider signatures (2009, unknown): “ittings, can in principle realize the XDM explanation of INTEGRAL [19] and also the iDM mechanism for reconciling the DAMA annual modulation with the null result of other direct detection experiments [20, 29]. In this section we briefly review these proposals, and discuss concrete ways of generating ”
• Sneutrino cold dark matter, a new analysis: Relic abundance and detection rates (2007, methodology): “The first extension allows for the inclusion of a right handed field for the sneutrino [7, 8, 9, 10, 11] and is discussed in Sect.”
• Modulation Effects in Dark Matter-Electron Scattering Experiments (2015, background): “Inelastic scattering events have also been explored in the context of nuclear excitations [21], as well as DM scattering to an excited state [22].”
• Dark matter direct detection signals inferred from a cosmological N-body simulation with baryons (2009, result): “scenario, a dark matter particle DM 1 is supposed to scatter into a slightly heavier state DM 2, with a mass splitting = M DM 2 M DM 1 ˘100 keV. In this scenario, which has been rst proposed in Ref. [110] and confronted to the recent data in Refs. [62,111{114], a much broader range of dark matter ca”