Hadronic single inclusive kt distributions inside one jet beyond MLLA

Abstract

The hadronic kt-spectrum inside one jet is determined including corrections of relative magnitude sqrtalphas with respect to the Modified Leading Logarithmic Approximation (MLLA), at and beyond the limiting spectrum (assuming an infrared cut-off Q0 = LambdaQCD and Q0 not = LambdaQCD). The agreement between our results and preliminary measurements by the CDF collaboration is impressive, much better than at MLLA, pointing out very small overall non-perturbative contributions.

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