On the Choice of Dispersion Relation to Calculate the QCD Correction to $Γ(H\to \ell^+\ell^-)

Details On the Choice of Dispersion Relation to Calculate the QCD Correction to $Γ(H\to \ell^+\ell^-) On the Choice of Dispersion Relation to Calculate the QCD Correction to $Γ(H\to \ell^+\ell^-)

1994-07-21

arxiv.org/abs/hep-ph/9407349v1

Phys.Rev. D53 (1996) 1548-1552

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages

Scientific paper

10.1103/PhysRevD.53.1548

We use the Operator Product Expansion (OPE) of quark vacuum polarization
functions to show that the dispersion relation of Kniehl and Sirlin will yield
the correct result to all orders in $\alpha_s$ when applied to the QCD
correction to the leptonic decay width of the Higgs boson.

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