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Paper   IPM / Particles / 11593
School of Particles and Accelerator
  Title:   Determination of the strong coupling constant using available experimental data
  Author(s): 
1.  Shahin Atashbar Tehrani
2.  Ali Naghi Khorramian
  Status:   Published
  Journal: Chinese Physics C
  No.:  9
  Vol.:  34
  Year:  2010
  Pages:   1485-1487
  Supported by:  IPM
  Abstract:
We determine the strong coupling constant s up to 4-loop in perturbative QCD. Testing QCD requires the measurement of s over ranges of energy scales. In this analysis, the value of s is determined from the unpolarized structure functions data points by minimizing the 2 function between the theory result and experimental data. Using perturbative QCD calculations from threshold corrections, we obtain s(M2 Z)= 0:11390:0020 at N3LO which is in good agreement with the very recently results from the inclusive jet cross section in pp collisions at ps=1.96 TeV.

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