Yukawa coupling quantum corrections to the self couplings of the lightest MSSM Higgs boson

Details Yukawa coupling quantum corrections to the self couplings of the lightest MSSM Higgs boson Yukawa coupling quantum corrections to the self couplings of the lightest MSSM Higgs boson

2001-08-29

arxiv.org/abs/hep-ph/0108245v2

Eur.Phys.J.C23:163-172,2002

Physics

High Energy Physics

High Energy Physics - Phenomenology

LaTeX, 19 pages, 3 figures included. A few minor changes and references added

Scientific paper

10.1007/s100520100862

A detailed analysis of the top-quark/squark quantum corrections to the lightest CP-even Higgs boson (h^0) self-couplings is presented in the MSSM. By considering the leading one-loop Yukawa-coupling contributions of O(m_t^4), we discuss the decoupling behaviour of these corrections when the top-squarks are heavy compared to the electroweak scale. As shown analytically and numerically, the large corrections can almost completely be absorbed into the h^0-boson mass. Our conclusion is that 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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