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

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

1999-09-14

arxiv.org/abs/hep-ph/9909374v1

J.Phys.G26:93-98,2000

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages, latex2e, 1 figure

Scientific paper

10.1088/0954-3899/26/1/309

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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