Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2002-03-26
Phys.Rev.D66:043503,2002
Physics
High Energy Physics
High Energy Physics - Phenomenology
42 pages, 3 tables and 37 figures, typeset with ReVTeX4. A few typos corrected. The revised version matches the paper to appea
Scientific paper
10.1103/PhysRevD.66.043503
The DAMA/NaI Collaboration has observed a 4-sigma C.L. model independent effect investigating the annual modulation signature in the counting rate of an NaI(Tl) set-up (total exposure of 57986 kg day) and the implications of this effect have been studied under different model-dependent assumptions. In this paper we extend one of the previous analyses, the case of a WIMP with a purely spin-independent coupling, by discussing in detail the implications on the results of the uncertainties on the dark matter galactic velocity distribution. We study in a systematic way possible departures from the isothermal sphere model, which is the parameterization usually adopted to describe the halo. We specifically consider modifications arising from various matter density profiles, effects due to anisotropies of the velocity dispersion tensor and rotation of the galactic halo. The hypothesis of WIMP annual modulation, already favoured in the previous analysis using an isothermal sphere, is confirmed in all the investigated scenarios, and the effects of the different halo models on the determination of the allowed maximum-likelihood region in the WIMP mass and WIMP-nucleon cross-section are derived and discussed.
Belli P.
Cerulli Ricardo
Fornengo Nicolao
Scopel Stefano
No associations
LandOfFree
Effect of the galactic halo modeling on the DAMA/NaI annual modulation result: an extended analysis of the data for WIMPs with a purely spin-independent coupling does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Effect of the galactic halo modeling on the DAMA/NaI annual modulation result: an extended analysis of the data for WIMPs with a purely spin-independent coupling, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Effect of the galactic halo modeling on the DAMA/NaI annual modulation result: an extended analysis of the data for WIMPs with a purely spin-independent coupling will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-85555