Article ID Journal Published Year Pages File Type
9855040 Nuclear Physics B 2005 58 Pages PDF
Abstract
We consider the Z∗QQ¯ vertex to order αS2 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.
Related Topics
Physical Sciences and Engineering Mathematics Mathematical Physics
Authors
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