Detectability of a subdominant density component of cold dark matter

Gintaras Duda; Graciela Gelmini; Paolo Gondolo

doi:10.1016/S0370-2693(02)01266-2

Detectability of a subdominant density component of cold dark matter

Gintaras Duda, Graciela Gelmini, Paolo Gondolo

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21 Scopus citations

Abstract

Here we examine the detectability of collisionless dark matter candidates that may constitute not all but only a subdominant component of galactic cold dark matter. We show that direct WIMP searches would not be severely affected by the reduced density. In fact, the direct detection rates of neutralinos stay almost constant even if neutralinos constitute 1% of the halo dark matter. Only for lower densities do the rates decrease with density. Even neutralinos accounting for only 10^-4 of the local dark halo density are within proposed future discovery limits. We comment also on axions and indirect WIMP searches.

Original language	English (US)
Pages (from-to)	187-192
Number of pages	6
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	529
Issue number	3-4
DOIs	https://doi.org/10.1016/S0370-2693(02)01266-2
State	Published - Mar 21 2002
Externally published	Yes

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics

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10.1016/S0370-2693(02)01266-2

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title = "Detectability of a subdominant density component of cold dark matter",

abstract = "Here we examine the detectability of collisionless dark matter candidates that may constitute not all but only a subdominant component of galactic cold dark matter. We show that direct WIMP searches would not be severely affected by the reduced density. In fact, the direct detection rates of neutralinos stay almost constant even if neutralinos constitute 1% of the halo dark matter. Only for lower densities do the rates decrease with density. Even neutralinos accounting for only 10-4 of the local dark halo density are within proposed future discovery limits. We comment also on axions and indirect WIMP searches.",

author = "Gintaras Duda and Graciela Gelmini and Paolo Gondolo",

note = "Funding Information: G.D. and G.G. were supported in part by the US Department of Energy Grant No. DE-FG03-91ER40662, Task C. P.G. acknowledges that one of the points made in this Letter, namely, that in the MSSM some extreme low density neutralinos with Ωh 2 ≃10 −3 –10 −5 might be detectable, was made in conversations with Joe Silk and Joakim Edsj{\"o} in March 1999. ",

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AU - Duda, Gintaras

AU - Gelmini, Graciela

AU - Gondolo, Paolo

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