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Decoupling behaviour of O(m_t^4) corrections to the h^0 self-couplings

Wolfgang Hollik·Siannah Penaranda
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Abstract

The decoupling behaviour of the leading one-loop Yukawa-coupling contributions of O(m_t^4) to the lightest MSSM Higgs boson self-couplings, when the top-squarks are heavy as compared to the electroweak scale, are discussed. As shown analytically and numerically, the large corrections can almost completely be absorbed into the h^0-boson mass and therefore, the h^0 self-couplings remain similar to the coupling of the SM Higgs boson for a heavy top-squark sector.

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Wolfgang Hollik, Siannah Penaranda. 2003-02-27. Decoupling behaviour of O(m_t^4) corrections to the h^0 self-couplings. https://doi.org/10.1016/s0920-5632(03)80190-1

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