Determination of nonuniversal supergravity models at the Large Hadron Collider

2010/08/31 by Bhaskar Dutta, T. Kamon, Teruki Kamon +4 · 13 citations
Physics and Astronomy · #Boson #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Dark matter #Gauge (firearms) #Higgs boson #Higgsino #Large Hadron Collider #Lightest Supersymmetric Particle #Minimal Supersymmetric Standard Model #Neutralino #Particle physics #Particle physics theoretical and experimental studies #Physics #Physics beyond the Standard Model #Standard Model (mathematical formulation) #Supergravity #Supersymmetry #hep-ph

paper · pdf · doi:10.1103/physrevd.82.115009

published in Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields 82(11) (American Physical Society) · 19 pages, 8 figures, corrected figures for visibility, additional background and systematic uncertainties estimated, references added and corrected

arxiv created 2010/12/06 · openalex publication_date 2010/12/06 · arxiv updated 2010/12/23 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We examine a well-motivated nonuniversal supergravity model where the Higgs boson masses are not unified with the other scalars at the grand unified scale at the LHC. The dark matter content can easily be satisfied in this model by having a larger Higgsino component in the lightest neutralino. Typical final states in such a scenario at the LHC involve W bosons. We develop a bi-event subtraction technique to reduce a huge combinatorial background to identify W\ensuremath→jj decays. This is also a key technique to reconstruct supersymmetric particle masses in order to determine the model parameters. With the model parameters, we find that the dark matter content of the Universe can be determined in agreement with existing experimental results.

Citations

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