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Asymptotically Free Natural Supersymmetric Twin Higgs Model.

Marcin Badziak1, Keisuke Harigaya2

  • 1Institute of Theoretical Physics, Faculty of Physics, University of Warsaw, ul. Pasteura 5, PL-02-093 Warsaw, Poland; Department of Physics, University of California, Berkeley, California 94720, USA; and Theoretical Physics Group, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.

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This study introduces a supersymmetric Twin Higgs model with a new gauge interaction, enabling natural electroweak symmetry breaking for heavy particles. It also predicts a top quark decay detectable at the Large Hadron Collider.

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Area of Science:

  • Particle Physics
  • High Energy Physics
  • Supersymmetry

Background:

  • Twin Higgs models address the absence of colored particles in natural electroweak symmetry breaking.
  • Existing ultraviolet completions necessitate nonperturbative dynamics below the Planck scale.

Purpose of the Study:

  • To propose a supersymmetric model incorporating the Twin Higgs mechanism via a new asymptotically free gauge interaction.
  • To investigate natural electroweak symmetry breaking and flavor phenomenology within this new model.

Main Methods:

  • Development of a supersymmetric model with an additional asymptotically free gauge interaction.
  • Analysis of electroweak symmetry breaking conditions for heavy particles (squarks, gluino).
  • Exploration of flavor physics, specifically top quark decay modes.

Main Results:

  • Achieved natural electroweak symmetry breaking for squarks and gluino heavier than 2 TeV, even with Planck-scale supersymmetry breaking.
  • Identified a potentially discoverable top quark decay into a Higgs boson and an up quark at the LHC.

Conclusions:

  • The proposed supersymmetric Twin Higgs model offers a viable framework for natural electroweak symmetry breaking.
  • The predicted top quark decay provides a testable signature at the Large Hadron Collider, probing new physics.