# Differences

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+ | ====== TTP10-14 R(s), Bjorken sum rule and the Crewther Relation in order alpha_s^4 ====== | ||

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+ | <hidden TTP10-14 R(s), Bjorken sum rule and the Crewther Relation in order alpha_s^4 > We report on our calculation of the order alpha_s^4 | ||

+ | contributions to the Bjorken sum rule for polarized electron-nucleon scattering | ||

+ | and to the (non-singlet) part of the cross section for electron-positron | ||

+ | annihilation into hadrons for the case of a generic colour gauge group. | ||

+ | We confirm at the same order a (generalized) | ||

+ | Crewther relation between the Bjorken sum rule and the corresponding Adler function which provides a strong test | ||

+ | of the correctness of our previously obtained results: the ratio R(s) in QCD | ||

+ | and the five-loop beta-function in quenched QED. | ||

+ | </hidden> | ||

+ | |**K.G. Chetyrkin** | | ||

+ | | {{preprints:2010:ttp10-14.pdf|PDF}} {{preprints:2010:ttp10-14.ps|PostScript}} | | ||

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