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arXiv · hep-ph/9801365

The Higgs mass in the MSSM infrared fixed point scenario

J. A. Casas·J. R. Espinosa·H. E. Haber
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Abstract

In the infrared fixed point (IFP) scenario of the minimal supersymmetric model (MSSM), the top-quark mass and other physical quantities of the low-energy theory are insensitive to the values of the parameters of the theory at some high energy scale. In this framework we evaluate the light CP-even Higgs mass, $m_h$, taking into account some important effects that had not been previously considered. In particular, the supersymmetric correction to the relation between the running and the physical top-quark masses lowers the value of $\tanβ$, thereby implying a lower predicted value of $m_h$. Assuming a supersymmetric threshold of $M_S\leq 1$ TeV and $M_t=175$ GeV, we find an upper bound of $m_h\le 97\pm 2$ GeV; the most plausible value of $m_h$ lies somewhat below the upper bound. This places the Higgs boson in the IFP scenario well within the reach of the LEP-2 Higgs search.

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J. A. Casas, J. R. Espinosa, H. E. Haber. 1998-05-18. The Higgs mass in the MSSM infrared fixed point scenario. https://doi.org/10.1016/s0550-3213(98)00327-7

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