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Title: Probing the parameter space for an MSSM inflation and the neutralino dark matter

Abstract

The flat directions LLe and udd within the minimal supersymmetric standard model provide all the necessary ingredients for a successful inflation with the right amplitude of the scalar density perturbations, negligible gravity waves and the spectral tilt within 2{sigma} observed range 0.92{<=}n{sub s}{<=}1.0. In this paper we explore the available parameter space for inflation in conjunction with a thermal cold dark matter abundance within the minimal supergravity model. Remarkably for the inflaton, which is a combination of squarks and sleptons, there is a stau-neutralino coannihilation region below the inflaton mass 500 GeV for the observed density perturbations and the tilt of the spectrum. For such a low mass of the inflaton the LHC is capable of discovering the inflaton candidates within a short period of its operation. Inflation is also compatible with the focus point region which opens up for the inflaton masses above TeV. We show that embedding MSSM within SO(10) can naturally favor this region.

Authors:
 [1];  [2];  [3]
  1. Perimeter Institute for Theoretical Physics, Waterloo, ON, N2L 2Y5 (Canada)
  2. Department of Physics, Texas A and M University, College Station, Texas 77843-4242 (United States)
  3. NORDITA, Blegdamsvej-17, Copenhagen-2100 (Denmark)
Publication Date:
OSTI Identifier:
21020312
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. D, Particles Fields; Journal Volume: 75; Journal Issue: 7; Other Information: DOI: 10.1103/PhysRevD.75.075018; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; AMPLITUDES; CERN LHC; DENSITY; DISTURBANCES; GEV RANGE; GRAVITY WAVES; NONLUMINOUS MATTER; REST MASS; SO-10 GROUPS; STANDARD MODEL; SUPERGRAVITY; SUPERSYMMETRY; TEV RANGE

Citation Formats

Allahverdi, Rouzbeh, Dutta, Bhaskar, and Mazumdar, Anupam. Probing the parameter space for an MSSM inflation and the neutralino dark matter. United States: N. p., 2007. Web. doi:10.1103/PHYSREVD.75.075018.
Allahverdi, Rouzbeh, Dutta, Bhaskar, & Mazumdar, Anupam. Probing the parameter space for an MSSM inflation and the neutralino dark matter. United States. doi:10.1103/PHYSREVD.75.075018.
Allahverdi, Rouzbeh, Dutta, Bhaskar, and Mazumdar, Anupam. Sun . "Probing the parameter space for an MSSM inflation and the neutralino dark matter". United States. doi:10.1103/PHYSREVD.75.075018.
@article{osti_21020312,
title = {Probing the parameter space for an MSSM inflation and the neutralino dark matter},
author = {Allahverdi, Rouzbeh and Dutta, Bhaskar and Mazumdar, Anupam},
abstractNote = {The flat directions LLe and udd within the minimal supersymmetric standard model provide all the necessary ingredients for a successful inflation with the right amplitude of the scalar density perturbations, negligible gravity waves and the spectral tilt within 2{sigma} observed range 0.92{<=}n{sub s}{<=}1.0. In this paper we explore the available parameter space for inflation in conjunction with a thermal cold dark matter abundance within the minimal supergravity model. Remarkably for the inflaton, which is a combination of squarks and sleptons, there is a stau-neutralino coannihilation region below the inflaton mass 500 GeV for the observed density perturbations and the tilt of the spectrum. For such a low mass of the inflaton the LHC is capable of discovering the inflaton candidates within a short period of its operation. Inflation is also compatible with the focus point region which opens up for the inflaton masses above TeV. We show that embedding MSSM within SO(10) can naturally favor this region.},
doi = {10.1103/PHYSREVD.75.075018},
journal = {Physical Review. D, Particles Fields},
number = 7,
volume = 75,
place = {United States},
year = {Sun Apr 01 00:00:00 EDT 2007},
month = {Sun Apr 01 00:00:00 EDT 2007}
}