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

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

2002-10-07

arxiv.org/abs/hep-ph/0210108v3

Nucl.Phys.Proc.Suppl. 116 (2003) 311-315

Physics

High Energy Physics

High Energy Physics - Phenomenology

LaTeX, 5 pages, 3 figures included; typos corrected. Uses npb.sty. Talk given by S.P. at the RADCOR 2002/Loops and Legs in Qua

Scientific paper

10.1016/S0920-5632(03)80190-1

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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