Pade-improvement of CP-odd Higgs decay rate into two gluons

被引：17

作者：

Chishtie, FA ^{[1
]}

Elias, V

Steele, TG

机构：

[1] Univ Western Ontario, Dept Appl Math, London, ON N6A 5B7, Canada

[2] Univ Saskatchewan, Dept Phys & Engn Phys, Saskatoon, SK S7N 5C6, Canada

来源：

JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS | 2000年 / 26卷 / 01期

关键词：

D O I：

10.1088/0954-3899/26/1/309

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

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 mA from the known three-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.

引用

页码：93 / 98

页数：6

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