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Low Mass Gluino Within The Sparticle Landscape, Implications For Dark Matter, And Early Discovery Prospects At Lhc-7, Ning Chen, Daniel Feldman, Zuowei Liu, Pran Nath, Gregory Peim
Low Mass Gluino Within The Sparticle Landscape, Implications For Dark Matter, And Early Discovery Prospects At Lhc-7, Ning Chen, Daniel Feldman, Zuowei Liu, Pran Nath, Gregory Peim
Pran Nath
We analyze supergravity models that predict a low mass gluino within the landscape of sparticle mass hierarchies. The analysis includes a broad class of models that arise in minimal and in nonminimal supergravity unified frameworks and in extended models with additional U(1)Xn hidden sector gauge symmetries. Gluino masses in the range (350–700) GeV are investigated. Masses in this range are promising for early discovery at the LHC at √s=7 TeV (LHC-7). The models exhibit a wide dispersion in the gaugino-Higgsino eigencontent of their lightest supersymmetric particles and in their associated sparticle mass spectra. A signature analysis is carried out and …
Higgsino Dark Matter Model Consistent With Galactic Cosmic Ray Data And Possibility Of Discovery At Lhc-7, Ning Chen, Daniel Feldman, Zuowei Liu, Pran Nath, Gregory Peim
Higgsino Dark Matter Model Consistent With Galactic Cosmic Ray Data And Possibility Of Discovery At Lhc-7, Ning Chen, Daniel Feldman, Zuowei Liu, Pran Nath, Gregory Peim
Pran Nath
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.