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Dark matter in supersymmetric models with axino LSP in Randall-Sundrum II brane model

Jin U Kang1,2 and Grigoris Panotopoulos2

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The axino dark matter hypothesis in RSII brane model is studied. Within the framework of CMSSM we assume that the lightest neutralino or stau is the NLSP, and that the axino production has a single contribution from the NLSP decay. It is found that the axino can play the role of dark matter in the universe and we determine what the axino mass should be for different values of the five-dimensional Planck mass. An upper bound is obtained for the latter.

Keywords

Supersymmetric Standard Model

Cosmology of Theories beyond the SM

PACS

95.35.+d Dark matter (stellar, interstellar, galactic, and cosmological)

98.80.Cq Particle-theory and field-theory models of the early Universe (including cosmic pancakes, cosmic strings, chaotic phenomena, inflationary universe, etc.)

14.80.Ly Supersymmetric partners of known particles

12.60.Jv Supersymmetric models

95.30.Cq Elementary particle processes

Subjects

Gravitation and cosmology

Particle physics and field theory

Astrophysics and astroparticles

Dates

Issue 05 (May 2008)

Received 15 February 2008, accepted for publication 3 May 2008

Published 9 May 2008



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