Determination of the strong coupling constant using available experimental data

Atashbar Tehrani

doi:10.1088/1674-1137/34/9/079

Chinese Physics C> 2010, Vol. 34> Issue(9) : 1485-1487 DOI: 10.1088/1674-1137/34/9/079

Determination of the strong coupling constant using available experimental data

Atashbar Tehrani ^,

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Abstract：
We determine the strong coupling constant α_s up to 4-loop in perturbative QCD. Testing QCD requires the measurement of α_s over ranges of energy scales. In this analysis, the value of α_s is determined from the unpolarized structure functions data points by minimizing the χ² function between the theory result and experimental data. Using perturbative QCD calculations from threshold corrections, we obtain α_s(M_Z²)=0.1139±0.0020 at N³LO which is in good agreement with the very recently results from the inclusive jet cross section in pp collisions at √s=1.96 TeV.

References

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Atashbar Tehrani. Determination of the strong coupling constant using available experimental data[J]. Chinese Physics C, 2010, 34(9): 1485-1487. doi: 10.1088/1674-1137/34/9/079

Atashbar Tehrani. Determination of the strong coupling constant using available experimental data[J]. Chinese Physics C, 2010, 34(9): 1485-1487. doi: 10.1088/1674-1137/34/9/079 shu

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Received: 2010-02-08
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Determination of the strong coupling constant using available experimental data

Corresponding author: Atashbar Tehrani,

Received Date: 2010-02-08

Accepted Date: 1900-01-01

Available Online: 2010-09-05

Abstract:

We determine the strong coupling constant α_s up to 4-loop in perturbative QCD. Testing QCD requires the measurement of α_s over ranges of energy scales. In this analysis, the value of α_s is determined from the unpolarized structure functions data points by minimizing the χ² function between the theory result and experimental data. Using perturbative QCD calculations from threshold corrections, we obtain α_s(M_Z²)=0.1139±0.0020 at N³LO which is in good agreement with the very recently results from the inclusive jet cross section in pp collisions at √s=1.96 TeV.

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Determination of the strong coupling constant using available experimental data

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