High Energy Physics - Phenomenology
[Submitted on 7 Aug 2004 (v1), last revised 7 Jan 2005 (this version, v3)]
Title:Theoretical predictions for the direct detection of neutralino dark matter in the NMSSM
View PDFAbstract: We analyse the direct detection of neutralino dark matter in the framework of the Next-to-Minimal Supersymmetric Standard Model. After performing a detailed analysis of the parameter space, taking into account all the available constraints from LEPII, we compute the neutralino-nucleon cross section, and compare the results with the sensitivity of detectors. We find that sizable values for the detection cross section, within the reach of dark matter detectors, are attainable in this framework. For example, neutralino-proton cross sections compatible with the sensitivity of present experiments can be obtained due to the exchange of very light Higgses with $m_{h_1^0}\lsim 70$ GeV. Such Higgses have a significant singlet composition, thus escaping detection and being in agreement with accelerator data. The lightest neutralino in these cases exhibits a large singlino-Higgsino composition, and a mass in the range $50\lsim m_{\tilde\chi_1^0}\lsim 100$ GeV.
Submission history
From: David G. Cerdeno [view email][v1] Sat, 7 Aug 2004 18:46:33 UTC (570 KB)
[v2] Mon, 25 Oct 2004 19:13:14 UTC (583 KB)
[v3] Fri, 7 Jan 2005 03:13:39 UTC (585 KB)
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