Higgsino dark matter model consistent with galactic cosmic ray data and possibility of discovery at LHC-7

TL;DR

This paper proposes a Higgsino dark matter model within extended supergravity GUT frameworks that explains cosmic ray data, aligns with multiple experimental constraints, and suggests potential discovery at the LHC-7.

Contribution

It introduces a Higgsino dark matter model with an extended hidden sector compatible with cosmic ray observations and direct detection experiments, and predicts LHC-7 discoverability.

Findings

Consistent with PAMELA positron excess and Fermi-LAT photon constraints.

Aligns with WMAP relic density, CDMS-II, and XENON100 data.

Potential for discovery at LHC-7 with 1 fb^(-1) luminosity.

Abstract

A solution to the PAMELA positron excess with Higgsino dark matter within extended supergravity grand unified (SUGRA) models is proposed. The models are compliant with the photon constraints recently set by Fermi-LAT and produce positron as well as antiproton fluxes consistent with the PAMELA experiment. The SUGRA models considered have an extended hidden sector with extra degrees of freedom which allow for a satisfaction of relic density consistent with WMAP. The Higgsino models are also consistent with the CDMS-II and XENON100 data and are discoverable at LHC-7 with 1 fb^(-1) of luminosity. The models are testable on several fronts.