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Experimental Implementation of a New Composite Fabrication Method: Exposing Bare Fibers on the Composite Surface by the Soft Layer Method
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Little composite dark matter.

Reuven Balkin1, Gilad Perez2, Andreas Weiler1

  • 11First Physik-Department, Technische Universität München, 85748 Garching, Germany.

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|February 16, 2018
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Summary
This summary is machine-generated.

We explored a composite electroweak singlet as dark matter. This model fits dark matter relic abundance and experimental constraints, with unique LHC signatures involving third-generation quarks.

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Area of Science:

  • High Energy Physics
  • Particle Physics
  • Cosmology

Background:

  • The nature of dark matter remains a significant mystery in cosmology.
  • Extensions to the Standard Model, such as the Littlest Higgs model with T-parity, offer potential explanations for dark matter.
  • Composite models propose new physics at higher energy scales, potentially linked to electroweak symmetry breaking.

Purpose of the Study:

  • To investigate the dark matter phenomenology of a composite electroweak singlet within the Littlest Higgs model with T-parity.
  • To identify viable parameter spaces consistent with current experimental constraints.
  • To explore the collider signatures of this dark matter candidate at the Large Hadron Collider (LHC).

Main Methods:

  • Phenomenological analysis of a composite electroweak singlet dark matter candidate.
  • Scans of parameter space to satisfy relic abundance and experimental constraints (collider, electroweak precision, direct detection).
  • Analysis of LHC signatures, including comparisons with natural Supersymmetry (SUSY) and composite Higgs scenarios.

Main Results:

  • A viable parameter space was found for the composite electroweak singlet model.
  • The model predicts a correct dark matter relic abundance.
  • The model exhibits a rich LHC phenomenology with interplay between SUSY-like and composite Higgs-like signals.

Conclusions:

  • The composite electroweak singlet is a viable dark matter candidate within this extended Higgs model.
  • The model's unique LHC signatures provide opportunities for experimental verification.
  • Weak interaction with the Higgs via Higgs portal coupling allows evasion of direct detection limits.