Abstract
We examine the detectability through indirect means of weakly interacting dark matter candidates that may constitute not all but only a subdominant component of galactic cold dark matter. We show that the possibility of indirect detection of neutralinos from their annihilations in the Earth and Sun is not severely hampered by decreasing the neutralino relic density. Upward-going muon fluxes in underground detectors from neutralino annihilations in the Sun can remain above the threshold of detectability of 10 muons/km 2/yr for neutralinos composing 1% or more of the halo dark matter. Similarly, signals from neutralino annihilations in the Earth can also remain high for neutralino densities of 1% of the halo and actually would only be observable close to this low density for neutralinos lighter than 150 GeV. We also show that there are many models which simultaneously have high direct and indirect detection rates making some model discrimination possible if a signal is seen in any of the current dark matter searches.
| Original language | English |
|---|---|
| Article number | 023505 |
| Journal | Physical Review D - Particles, Fields, Gravitation and Cosmology |
| Volume | 67 |
| Issue number | 2 |
| DOIs | |
| State | Published - 2003 |
| Externally published | Yes |
Fingerprint
All Science Journal Classification (ASJC) codes
- Physics and Astronomy (miscellaneous)
- Physics and Astronomy(all)
- Nuclear and High Energy Physics
- Mathematical Physics
Cite this
Indirect detection of a subdominant density component of cold dark matter. / Duda, Gintaras K.; Gelmini, Graciela; Gondolo, Paolo; Edsjö, Joakim; Silk, Joseph.
In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 67, No. 2, 023505, 2003.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Indirect detection of a subdominant density component of cold dark matter
AU - Duda, Gintaras K.
AU - Gelmini, Graciela
AU - Gondolo, Paolo
AU - Edsjö, Joakim
AU - Silk, Joseph
PY - 2003
Y1 - 2003
N2 - We examine the detectability through indirect means of weakly interacting dark matter candidates that may constitute not all but only a subdominant component of galactic cold dark matter. We show that the possibility of indirect detection of neutralinos from their annihilations in the Earth and Sun is not severely hampered by decreasing the neutralino relic density. Upward-going muon fluxes in underground detectors from neutralino annihilations in the Sun can remain above the threshold of detectability of 10 muons/km 2/yr for neutralinos composing 1% or more of the halo dark matter. Similarly, signals from neutralino annihilations in the Earth can also remain high for neutralino densities of 1% of the halo and actually would only be observable close to this low density for neutralinos lighter than 150 GeV. We also show that there are many models which simultaneously have high direct and indirect detection rates making some model discrimination possible if a signal is seen in any of the current dark matter searches.
AB - We examine the detectability through indirect means of weakly interacting dark matter candidates that may constitute not all but only a subdominant component of galactic cold dark matter. We show that the possibility of indirect detection of neutralinos from their annihilations in the Earth and Sun is not severely hampered by decreasing the neutralino relic density. Upward-going muon fluxes in underground detectors from neutralino annihilations in the Sun can remain above the threshold of detectability of 10 muons/km 2/yr for neutralinos composing 1% or more of the halo dark matter. Similarly, signals from neutralino annihilations in the Earth can also remain high for neutralino densities of 1% of the halo and actually would only be observable close to this low density for neutralinos lighter than 150 GeV. We also show that there are many models which simultaneously have high direct and indirect detection rates making some model discrimination possible if a signal is seen in any of the current dark matter searches.
UR - http://www.scopus.com/inward/record.url?scp=0037438272&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0037438272&partnerID=8YFLogxK
U2 - 10.1103/PhysRevD.67.023505
DO - 10.1103/PhysRevD.67.023505
M3 - Article
VL - 67
JO - Physical review D: Particles and fields
JF - Physical review D: Particles and fields
SN - 1550-7998
IS - 2
M1 - 023505
ER -