Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2011-04-29
PoS(QFTHEP2010)014
Physics
High Energy Physics
High Energy Physics - Phenomenology
Plenary talk given at the XIXth International Workshop on High Energy Physics and Quantum Field Theory, 8-15 September 2010, G
Scientific paper
We discuss the current status of the investigations of the conformal symmetry breaking contributions to three forms for the QCD generalizations of the Crewther relation. The new third form of the extension of this relation is considered in more detail. Particular attention is paid to the discussions of the applications of the $\beta$-expansion formalism proposed previously by one of us (SVM). Several relations between 5-loop contributions to the Adler D-function $D^{NS}_{A}$ and to the polarized Bjorken sum rule $S_\text{Bjp}$ are presented. One of them gives the additional confirmation of the correctness of the advanced analytical computer calculations of order $\alpha_s^4$ contributions to $D^{NS}_{A}$ and $S_\text{Bjp}$ in the general $SU(N_c)$ gauge group.
Kataev Andrei L.
Mikhailov S. V.
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