Constrained minimal supersymmetric standard model spectroscopy in light of PAMELA and ATIC observations

Ilia Gogoladze, Rizwan Khalid, Qaisar Shafi, and Hasan Yüksel

Phys. Rev. D 79, 055019 – Published 23 March 2009

Abstract

Dark matter neutralinos in the constrained minimal supersymmetric model (CMSSM) may account for the recent cosmic ray electron and positron observations reported by the PAMELA and ATIC experiments either through self annihilation or via decay. However, to achieve this, both scenarios require new physics beyond the “standard” CMSSM, and a unified explanation of the two experiments suggests a neutralino mass of order 700 GeV–2 TeV. A relatively light neutralino with mass around 100 GeV (300 GeV) can accommodate the PAMELA but not the ATIC observations based on a model of annihilating (decaying) neutralinos. We study the implications of these scenarios for Higgs and sparticle spectroscopy in the CMSSM and highlight some benchmark points. An estimate of neutrino flux expected from the annihilating and decaying neutralino scenarios is provided.

1 More

Received 15 January 2009

DOI:https://doi.org/10.1103/PhysRevD.79.055019

Authors & Affiliations

Ilia Gogoladze^*,†, Rizwan Khalid^‡, Qaisar Shafi^§, and Hasan Yüksel^∥

Bartol Research Institute, Department of Physics and Astronomy University of Delaware, Newark, Delaware 19716, USA

^*On leave of absence from: Andronikashvili Institute of Physics, GAS, Tbilisi, Georgia.
^†ilia@bartol.udel.edu
^‡rizwan@udel.edu
^§shafi@bartol.udel.edu
^∥yuksel@udel.edu

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand

Issue

Vol. 79, Iss. 5 — 1 March 2009

Reuse & Permissions

Access Options

Author publication services for translation and copyediting assistance advertisement

Physical Review D

covering particles, fields, gravitation, and cosmology