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.
Keywords
supergravity grand unified models, SUGRA, PAMELA, LHC-7, Higgsino
Subject Categories
Dark matter (Astronomy), Cosmic rays
Disciplines
Physics
Publisher
American Physical Society
Publication Date
1-10-2011
Rights Information
Copyright (2011) American Physical Society
Rights Holder
American Physical Society
Recommended Citation
Chen, Ning; Feldman, Daniel; Liu, Zuowei; Nath, Pran; and Peim, Gregory, "Higgsino dark matter model consistent with galactic cosmic ray data and possibility of discovery at LHC-7" (2011). Physics Faculty Publications. Paper 452.
Click button above to open, or right-click to save.
Notes
Originally published in Physical Review D v.83 (2011): 023506. DOI: 10.1103/PhysRevD.83.023506