Improved nonsinglet QCD analysis of the fixed-target DIS data

Abstract

Deep inelastic scattering data on $F_2$ structure function obtained by BCDMS, SLAC and NMC collaborations in fixed-target experiments were analyzed in the non-singlet approximation with next-to-next-to-leading-order accuracy. The strong coupling constant is found to be ${\alpha }_s(M_Z^2)=0.1157\pm 0.0022(totalexp.error)+\{\begin{array}{l}+0.0028\\ -0.0016\end{array}(theor)$, which is seen to be well compatible with the average world value. Results obtained in the present paper by carrying out fits similar to those done in our earlier study, with the exception for systematic errors in BCDMS data taken into account in a different way, confirm those which were derived in that same paper.

19 pages, 11 figs, 8 tables, published in JPG42. arXiv admin note: text overlap with arXiv:0912.4672

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Cited by in corpus (10)

• Bjorken polarized sum rule and infrared-safe QCD couplings
• Electron-positron annihilation into hadrons at the higher-loop levels
• Bjorken sum rule in QCD frameworks with analytic (holomorphic) coupling
• Transverse momentum dependent parton densities in processes with heavy quark generations
• Fractional Analytic QCD beyond Leading Order
• Fractional Analytic QCD beyond Leading Order in timelike region
• Explicit form of the R-ratio of electron-positron annihilation into hadrons
• Hadronic contributions to electroweak observables within DPT
• alpha_s in DIS scheme
• R-ratio of electron-positron annihilation into hadrons: higher-order pi2-terms