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preprints:2010:ttp10-14 [2016/03/15 20:38] (current)
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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}} ​  | 
 +| |