Heavy quark current correlators to (αs2

1997/05/07 by K.G. Chetyrkin, K. G. Chetyrkin, J.H. Kühn +3 · 143 citations
Physics and Astronomy · #Current (fluid) #High-Energy Particle Collisions Research #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum electrodynamics #Quark #Thermodynamics #hep-ph

paper · pdf · doi:10.1016/s0550-3213(97)00481-1

published in Nuclear Physics B 505(1-2), 40-64 (Elsevier BV) · Latex, 38 pages, 44 ps-figures. The complete paper, including figures, is also available via anonymous ftp at ftp://ttpux2.physik.uni-karlsruhe.de/ , or via www at http://www-ttp.physik.uni-karlsruhe.de/cgi-bin/preprints/

arxiv created 1997/05/07 · openalex publication_date 1997/11/01 · arxiv updated 2010/04/06 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

In this paper the three-loop polarization functions Π(q²) are calculated for the cases of an external vector, axial-vector, scalar or pseudo-scalar current. Results are presented for the imaginary part which directly leads to the cross section σ(e⁺e^- → Z → hadrons) and to the Higgs decay rates, respectively.

Citations

• Two loopO(Nfα2s) corrections to the decay width of the Higgs boson to two massive fermions
• Quadratic mass corrections of order to the decay rate of Z- and W-bosons
• Integration by parts: The algorithm to calculate β-functions in 4 loops
• Radiation of light fermions in heavy fermion production
• Double bubble corrections to heavy quark production

Cited by

• The relation between the and the on-shell quark mass at order αs3
• Five-loop vacuum polarization in pQCD: O(mq2αs4nf2) contribution