Two-loop QCD corrections to the heavy quark form factors: axial vector contributions
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Publication:875760
DOI10.1016/J.NUCLPHYSB.2005.01.035zbMATH Open1109.81370arXivhep-ph/0412259OpenAlexW4242836286MaRDI QIDQ875760
Author name not available (Why is that?)
Publication date: 16 April 2007
Published in: (Search for Journal in Brave)
Abstract: We consider the Z Q Qbar vertex to second order in the QCD coupling for an on-shell massive quark-antiquark pair and for arbitrary momentum transfer of the Z boson. We present closed analytic expressions for the two parity-violating form factors of that vertex at the two-loop level in QCD, excluding the contributions from triangle diagrams. These form factors are expressed in terms of 1-dimensional harmonic polylogarithms of maximum weight 4.
Full work available at URL: https://arxiv.org/abs/hep-ph/0412259
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