• Why supersymmetry? Physics beyond the standard model

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      https://www.ias.ac.in/article/fulltext/pram/087/03/0037

    • Keywords

       

      Naturalness problem; hierarchy problem; decoupling; supersymmetry; model independent; Standard Model; Higgs particle; violation of Lorentz invariance.;

    • Abstract

       

      The Naturalness Principle as a requirement that the heavy mass scales decouple from the physics of light mass scales is reviewed. In quantum field theories containing {\em elementary} scalar fields, such as the StandardModel of electroweak interactions containing the Higgs particle, mass of the scalar field is not a natural parameter as it receives large radiative corrections. How supersymmetry solves this Naturalness Problem is outlined. Thereare also other contexts where the presence of elementary scalar fields generically spoils the high–low mass scales decoupling in the quantum theory. As an example of this, the non-decoupling of possible Planck scale violationof Lorentz invariance due to quantum gravity effects from the physics at low scales in theories with elementary scalar fields such as the Higgs field is described. Here again supersymmetry provides a mechanism for ensuringthat the decoupling of heavy–light mass scales is maintained.

    • Author Affiliations

       

      ROMESH K KAUL 1

      1. The Institute of Mathematical Sciences, CIT Campus, Taramani, Chennai 600 113, India
    • Dates

       
  • Pramana – Journal of Physics | News

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