Low mass neutralino dark matter in the minimal supersymmetric standard model with constraints from Bs → μ+μ- and Higgs boson search limits

被引：60
作者：
Feldman, Daniel [1 ]
Liu, Zuowei [2 ]
Nath, Pran [3 ]
机构：
[1] Univ Michigan, Michigan Ctr Theoret Phys, Ann Arbor, MI 48109 USA
[2] SUNY Stony Brook, CN Yang Inst Theoret Phys, Stony Brook, NY 11794 USA
[3] Northeastern Univ, Dept Phys, Boston, MA 02115 USA
来源：
PHYSICAL REVIEW D | 2010年 / 81卷 / 11期
基金：
美国国家科学基金会;
关键词：
LIGHT; TEVATRON;
D O I：
10.1103/PhysRevD.81.117701
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
An analysis of spin independent neutralino-proton cross sections sigma(SI)(chi p) that includes this low mass region is given. The analysis is done in minimal supersymmetric standard model (MSSM) with radiative electroweak symmetry breaking (REWSB). It is found that cross sections as large as 10(-40) cm(2) can be accommodated in MSSM within the REWSB framework. However, inclusion of sparticle mass limits from current experiments, as well as lower limits on the Higgs searches from the Tevatron, and the current experimental upper limit on B-s -> mu(+)mu(-) significantly limit the allowed parameter space reducing sigma(SI)(chi p) to lie below similar to 10(-41) cm(2) or even lower for neutralino masses around 10 GeV. These cross sections are an order of magnitude lower than the cross sections needed to explain the reported data in the recent dark matter experiments in the low neutralino mass region.
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