Supersymmetry signals of supercritical string cosmology at the Large Hadron Collider

2008/08/31 by Bhaskar Dutta, A. Gurrola, Alfredo Gurrola +9 · 2 citations
Physics and Astronomy · #Astrophysics #Black Holes and Theoretical Physics #Collider #Cosmology #Cosmology and Gravitation Theories #Dark energy #Dark matter #Dilaton #Gravitino #Higgs boson #Large Hadron Collider #Minimal Supersymmetric Standard Model #Neutralino #Particle physics #Particle physics theoretical and experimental studies #Physics #String (physics) #Supergravity #Supersymmetry #Theoretical physics #hep-ph

paper · pdf · doi:10.1103/physrevd.79.055002

published as Phys.Rev.D79:055002,2009 · 26 pages, 21 figures, minor changes and references added

openalex publication_date 2009/03/04 · arxiv created 2009/05/05 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We investigate the minimal supergravity signals at the Large Hadron Collider in the context of supercritical string cosmology (SSC). In this theory, the presence of a time dependent dilaton provides us with a smoothly evolving dark energy and modifies the dark matter allowed region of the minimal supergravity model with standard cosmology. Such a dilaton dilutes the supersymmetric dark matter density (of neutralinos) by a factor O(10) and consequently the regions with too much dark matter in the standard scenario are allowed in the SSC. The final states expected at the Large Hadron Collider in this scenario, unlike the standard scenario, consist of Z bosons, Higgs bosons, and/or high energy taus. We show how to characterize these final states and determine the model parameters. Using these parameters, we determine the dark matter content and the neutralino-proton cross section. All these techniques can also be applied to determine model parameters in SSC models with different supersymmetry breaking scenarios.

Citations

• Smoothly evolving supercritical-string dark energy relaxes supersymmetric-dark-matter constraints
• Neutralino dark matter in focus point supersymmetry
• Phenomenological aspects of heterotic orbifold models at one loop
• Supersymmetric relics from the big bang
• First‐Year Wilkinson Microwave Anisotropy Probe ( WMAP ) Observations: Determination of Cosmological Parameters
• Measurement of the Negative Muon Anomalous Magnetic Moment to 0.7 ppm
• ISAJET 7.37: A Monte Carlo Event Generator for pp, pp, and e⁺e^- Interactions
• The pre-big bang scenario in string cosmology
• Search for the Standard Model Higgs boson at LEP
• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)

Cited by

• Resolving Histogram Binning Dilemmas with Binless and Binfull Algorithms
• Determination of nonuniversal supergravity models at the Large Hadron Collider

Related

• Some Aspects of String Cosmology and the LHC
• Large dark matter cross sections from supergravity and superstrings
• Dark matter searches and Colliders
• Future Prospects for the Minimal Supersymmetric Standard Model
• Dark Matter Candidates in Supersymmetric Models