• CP-violating dipole form factors of the top quark and tau lepton in scalar leptoquark models

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      https://www.ias.ac.in/article/fulltext/pram/051/03-04/0387-0403

    • Keywords

       

      CP violation; scalar leptoquarks; dipole moments; top quark; tau lepton

    • Abstract

       

      We calculate the CP-violating electric and weak dipole form factors of the top quark and the tau lepton in models with scalar leptoquarks coupling only to the third generation of quarks and leptons. We obtain numerical values of the real and imaginary parts of these form factors at various energies for different values of leptoquark masses and couplings. The existing limits on the tau electric and weak dipole form factors allow us to put a limit on the masses and couplings of such leptoquarks and therefore on the top electric and weak dipole form factors. We also discuss constraints on the form factors coming from indirect limits on leptoquark masses and couplings deduced from LEP results on Z properties.

    • Author Affiliations

       

      P Poulose1 2 Saurabh D Rindani1 3

      1. Theory Group, Physical Research Laboratory, Navrangpura, Ahmedabad - 380 009, India
      2. Theory Group, Tata Institute of Fundamental Research, Homi Bhabha Road, Colaba, Mumbai - 400 005
      3. Instituto de Física Corpuscular CSIC, Departament de Física Teòrica, Universitat de Valéncia, Burjassot (Valéncia) - 46100, Spain
    • Dates

       
  • Pramana – Journal of Physics | News

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