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Light Relic Neutralinos

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arxiv hep-ph/0212379 v2 pith:Z4MN6BD2 submitted 2002-12-27 hep-ph astro-phhep-ex

classification hep-phastro-phhep-ex
keywords neutralinoslightrelicabundanceanalyticalargumentsbelowcontribution
verification ladder T0 review T1 audit T2 compute T3 formal
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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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Cited by 1 Pith paper

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  1. Searching for long-lived light neutralinos from $B$-meson decays with baryonic R-parity violation at Belle II

    hep-ph 2025-07 conditional novelty 6.0 of 10

    Belle II could detect long-lived bino neutralinos produced in B-meson decays, with a new partial-reconstruction method sensitive to RPV couplings far beyond existing bounds.

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