“School of Particles”
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| Paper IPM / Particles / 11593 |
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| Abstract: | |||||
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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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