Radiative corrections to the Higgs boson decay rate $Γ(H\rightarrow ZZ)$ in the minimal supersymmetric model

Details Radiative corrections to the Higgs boson decay rate $Γ(H\rightarrow ZZ)$ in the minimal supersymmetric model Radiative corrections to the Higgs boson decay rate $Γ(H\rightarrow ZZ)$ in the minimal supersymmetric model

1992-06-26

arxiv.org/abs/hep-ph/9206257v1

Phys.Rev.D47:222-231,1993

Physics

High Energy Physics

High Energy Physics - Phenomenology

22 pages, 9 figures available from authors, UCB-PTH-92/23 and LBL-32498

Scientific paper

10.1103/PhysRevD.47.222

We consider radiative corrections to the decay rate $\Gamma(H\rightarrow ZZ)$ of the heavy {\it CP}-even Higgs boson of the minimal supersymmetric model to two $Z$ bosons. We perform a one loop Feynman diagram calculation in the on-mass-shell renormalization scheme, and include the third generation of quarks and squarks. The tree level rate is suppressed by a mixing angle factor and decreases as $1/M_H$ for large $M_H$. The corrected rate overcomes this suppression and increases with $M_H$ for $M_H > 500$~GeV. The corrections can be very large and depend in detail on the top squark masses and $A$-term, as well as the supersymmetric Higgs mass parameter $\mu$.

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