Dirac Triplet Extension of the MSSM

ORAL

Abstract

In this paper we explore extensions of the Minimal Supersymmetric Standard Model involving two $SU(2)_{L}$ triplet chiral superfields that share a superpotential Dirac mass yet only one of which couples to the Higgs fields. This choice is motivated by recent work using two singlet superfields with the same superpotential requirements. We find that, as in the singlet case, the Higgs mass in the triplet extension can easily be raised to 125 GeV without introducing large fine-tuning. For triplets that carry hypercharge, the regions of least fine tuning are characterized by small contributions to the $\mathcal{T}$ parameter, and light stop squarks, $m_{\tilde{t}_1} \sim 300-450$ GeV; the latter is a result of the $\tan{\beta}$ dependence of the triplet contribution to the Higgs mass. Despite such light stop masses, these models are viable provided the stop-electroweakino spectrum is sufficiently compressed.

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Authors

  • Carlos Alvarado

    University of Notre Dame

  • Matt Bowers

    University of Notre Dame, University of Bari, Gran Sasso Science Institute, JINA and UND, UTK, LLNL, OU, INFN, TAMU, Universidad Complutense, Madrid, Lawrence Livermore National Laboratory, Division of Nuclear Physics, National Centre for Nuclear Research, Warsaw, Notre Dame University, University of Michigan, Michigan State University, Univ of Notre Dame, Weizmann Institute, Univ of Birmingham, Univ of Michigan, Oak Ridge National Laboratory, Argonne National Laboratory, The Hebrew University Jerusalem, Indiana University Purdue University Fort Wayne, Professor, University of Notre Dame, Assistant Professor, University of Notre Dame, PhD student, Associate Professor, University of Notre Dame, University of Richmond, University of Surrey, University of Richmond, University of Oslo, University of Wisconsin-La Crosse, University of Notre Dame, Department of Civil Engineering, University of Notre Dame, Department of Applied Computational Mathematics and Statistics, IUPUI Department of Physics, Indianapolis, IN, Ohio Northern University, Northern Kentucky University, Physics Department, Unversity of Missouri, Physics Department, REU Summer Intern, Sichuan University, Purdue University, Princeton University, Monmouth College, ETH, Switzerland, EPFL, Switzerland, Institut Laue-Langevin, France, Kent State University, University of Tennessee, Indiana University South Bend, University Of Notre Dame

  • Matt Bowers

    University of Notre Dame, University of Bari, Gran Sasso Science Institute, JINA and UND, UTK, LLNL, OU, INFN, TAMU, Universidad Complutense, Madrid, Lawrence Livermore National Laboratory, Division of Nuclear Physics, National Centre for Nuclear Research, Warsaw, Notre Dame University, University of Michigan, Michigan State University, Univ of Notre Dame, Weizmann Institute, Univ of Birmingham, Univ of Michigan, Oak Ridge National Laboratory, Argonne National Laboratory, The Hebrew University Jerusalem, Indiana University Purdue University Fort Wayne, Professor, University of Notre Dame, Assistant Professor, University of Notre Dame, PhD student, Associate Professor, University of Notre Dame, University of Richmond, University of Surrey, University of Richmond, University of Oslo, University of Wisconsin-La Crosse, University of Notre Dame, Department of Civil Engineering, University of Notre Dame, Department of Applied Computational Mathematics and Statistics, IUPUI Department of Physics, Indianapolis, IN, Ohio Northern University, Northern Kentucky University, Physics Department, Unversity of Missouri, Physics Department, REU Summer Intern, Sichuan University, Purdue University, Princeton University, Monmouth College, ETH, Switzerland, EPFL, Switzerland, Institut Laue-Langevin, France, Kent State University, University of Tennessee, Indiana University South Bend, University Of Notre Dame

  • Matt Bowers

    University of Notre Dame, University of Bari, Gran Sasso Science Institute, JINA and UND, UTK, LLNL, OU, INFN, TAMU, Universidad Complutense, Madrid, Lawrence Livermore National Laboratory, Division of Nuclear Physics, National Centre for Nuclear Research, Warsaw, Notre Dame University, University of Michigan, Michigan State University, Univ of Notre Dame, Weizmann Institute, Univ of Birmingham, Univ of Michigan, Oak Ridge National Laboratory, Argonne National Laboratory, The Hebrew University Jerusalem, Indiana University Purdue University Fort Wayne, Professor, University of Notre Dame, Assistant Professor, University of Notre Dame, PhD student, Associate Professor, University of Notre Dame, University of Richmond, University of Surrey, University of Richmond, University of Oslo, University of Wisconsin-La Crosse, University of Notre Dame, Department of Civil Engineering, University of Notre Dame, Department of Applied Computational Mathematics and Statistics, IUPUI Department of Physics, Indianapolis, IN, Ohio Northern University, Northern Kentucky University, Physics Department, Unversity of Missouri, Physics Department, REU Summer Intern, Sichuan University, Purdue University, Princeton University, Monmouth College, ETH, Switzerland, EPFL, Switzerland, Institut Laue-Langevin, France, Kent State University, University of Tennessee, Indiana University South Bend, University Of Notre Dame