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Explaining PAMELA and WMAP data through coannihilations in extended SUGRA with collider implications

Explaining PAMELA and WMAP data through coannihilations in extended SUGRA with collider implications

The PAMELA positron excess is analyzed within the framework of nonuniversal supergravity (SUGRA) models with an extended $U(1{)}^{n}$ gauge symmetry in the hidden sector leading to neutralino dark matter with either a mixed Higgsino-wino lightest $R$-parity odd supersymmetric particle (LSP) or an essentially pure wino-dominated LSP. The Higgsino-wino LSP can …