NEUTRALINO DARK MATTER SEARCHES

被引：123

作者：

GELMINI, GB

GONDOLO, P

ROULET, E

机构：

[1] UNIV TRIESTE,DEPT ASTRON,TRIESTE,ITALY

[2] SCUOLA INT SUPER STUDI AVANZATI,TRIESTE,ITALY

来源：

NUCLEAR PHYSICS B | 1991年 / 351卷 / 03期

关键词：

D O I：

10.1016/S0550-3213(05)80036-7

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We consider the lightest neutralino, a general combination of photino, zino and higgsinos in the minimal supersymmetric extension of the standard model, as a component of the dark matter in the halo of our galaxy. We compute the neutralino cosmological relic abundance to estimate its contribution to the dark halo density. Due to its spin-independent coherent interactions with nuclei, mediated mainly by Higgs bosons, neutralinos may be efficiently captured by the earth and the sun or interact in detectors. They could thus be detected in indirect and direct searches. Accelerator bounds have recently severely restricted the parameter space. We study neutralinos lighter than the W-boson and find that present dark matter searches impose practically no bounds in the regions allowed by accelerators. We show that part of those regions will be accessible to improved searches in the near future (particularly, looking for upgoing muons in underground detectors).

引用

页码：623 / 644

页数：22

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