Investigation of Power Corrections to Event Shape Variables measured in Deep-Inelastic Scattering

C.Adloff; et al; H1 Collaboration

Investigation of Power Corrections to Event Shape Variables measured in Deep-Inelastic Scattering

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arxiv hep-ex/9912052 v1 pith:CG5QI3NM submitted 1999-12-22 hep-ex

H1 Collaboration , C.Adloff , et al This is my paper · ORCID

classification hep-ex

keywords correctionspoweralphadatadeep-inelasticeventparameterscattering

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Deep-inelastic ep scattering data, taken with the H1 detector at HERA, are used to study the event shape variables thrust, jet broadening, jet mass, C parameter and two kinds of differential two-jet rate. The data cover a large range of the four-momentum transfer Q, which is considered to be the relevant energy scale, between 7 GeV and 100 GeV. The Q dependences of the mean values are compared with second order calculations of perturbative QCD applying power law corrections proportional to 1/Q^p to account for hadronization effects. The concept of power corrections is investigated by fitting simultaneously a non-perturbative parameter alpha_p and the strong coupling constant alpha_s.

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Second-order QCD corrections to event shape distributions in deep inelastic scattering
hep-ph 2019-09 accept novelty 7.0 of 10

The NNLO QCD corrections to DIS event shape distributions and their mean values are computed for the first time, reducing scale uncertainties and improving the description of H1 and ZEUS data.

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