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The Higgs sector of the MSSM in the decoupling limit

  • A. Dobado
  • M.J. Herrero
  • S. Peñaranda
Theoretical physics

Abstract.

We study the heavy Higgs sector of the MSSM composed of the \(H^{\pm}, H^0\) and \(A^0\) particles in the so-called decoupling limit where \(m_{A^0}\gg m_Z\). By integrating out these heavy Higgs particles to one-loop, we compute the effective action for the electroweak gauge bosons and find out that, in the decoupling limit, all the heavy Higgs effects can be absorbed into redefinitions of the Standard Model electroweak parameters. This demonstrates explicitely that the decoupling theorem works for the heavy MSSM Higgs particles. This is also compared with the paradigmatic and different case of the Standard Model heavy Higgs particle. Finally, this work together with our two previous works, complete the demonstration that all the non-standard particles in the MSSM, namely, squarks, sleptons, charginos, neutralinos and the heavy Higgs particles, decouple to one-loop from the low energy electroweak gauge boson physics.

Keywords

Gauge Boson Effective Action Higgs Sector Higgs Particle Electroweak Gauge Boson 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2000

Authors and Affiliations

  • A. Dobado
    • 1
  • M.J. Herrero
    • 2
  • S. Peñaranda
    • 2
  1. 1.Departamento de Física Teórica, Universidad Complutense de Madrid, 28040 Madrid, SpainES
  2. 2.Departamento de Física Teórica, Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, SpainES

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