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arXiv · hep-ph/9909374

Pade-Improvement of CP-odd Higgs Decay Rate into Two Gluons

F. A. Chishtie·V. Elias·T. G. Steele
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Abstract

We present an asymptotic Pade-approximant estimate for the four-loop coefficients within the linear combination of correlators entering the recently calculated decay rate of a CP-odd Higgs boson, with an assumed mass $m_A = 100 GeV$, into two gluons. All but one of these coefficients are shown to be determined for arbitrary $m_A$ from the known 3-loop-order rate by renormalization group methods. Asymptotic Pade-approximant estimates for these coefficients are all seen to be within 12% of their correct values. The four-loop term in the decay rate for $m_A = 100 GeV$ is estimated to be only 4.3% of its leading one-loop contribution.

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F. A. Chishtie, V. Elias, T. G. Steele. 1999-09-14. Pade-Improvement of CP-odd Higgs Decay Rate into Two Gluons. https://doi.org/10.1088/0954-3899%2F26%2F1%2F309

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