Abstract
We present analytic results for the three loop heavy top quark contributions of the electroweak ρ parameter. The calculation is carried out using the standard model lagrangian with vanishing gauge couplings. Within this gaugeless limit the masses of the Higgs boson M H and of the top quark m t are the single relevant mass scales. In the present calculation [1] we have investigated the behaviour of the ρ parameter in the limit of a Higgs mass equal to zero.
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Faisst, M. (2003). Three Loop Leading Top Mass Contributions to the ρ Parameter. In: Trampetić, J., Wess, J. (eds) Particle Physics in the New Millennium. Lecture Notes in Physics, vol 616. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-36539-7_31
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DOI: https://doi.org/10.1007/3-540-36539-7_31
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