Light Relic Neutralinos

Details Light Relic Neutralinos Light Relic Neutralinos

2002-12-27

arxiv.org/abs/hep-ph/0212379v2

Phys.Rev.D67:063519,2003

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages, 4 figures, typeset with ReVTeX4. The paper may also be found at http://www.to.infn.it/~fornengo/papers/light.ps.gz S

Scientific paper

10.1103/PhysRevD.67.063519

The relic abundance and the scalar cross-section off nucleon for light neutralinos (of mass below about 45 GeV) are evaluated in an effective MSSM model without GUT-inspired relations among gaugino masses. It is shown that these neutralinos may provide a sizeable contribution to the matter density in the Universe and produce measurable effects in WIMP direct detection experiments. These properties are elucidated in terms of simple analytical arguments.

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