Jet cross sections and $α s$ in deep inelastic scattering and photoproduction at HERA - High Energy Physics - ExperimentReport as inadecuate




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Abstract: Recent ZEUS measurements of inclusive-jet and dijet cross sections in neutralcurrent deep inelastic ep scattering at HERA are presented. The data correspondto more than a two-fold increase in statistics compared to previous studies.The cross sections are measured in the Breit frame, for boson virtualities ofQ^2 > 125 GeV^2, as functions of various kinematic and jet observables. Thedata are found to be well described by NLO QCD and have the potential toconstrain the gluon density in the proton. Two new extractions of the strongcoupling, alpha s, are also presented: the first is determined from theinclusive-jet neutral current DIS measurement presented here, while the secondis from a re-analysis of previously published data on inclusive jetphotoproduction. Both measurements are of competitive precision and inagreement with the world average.



Author: C. Gwenlan

Source: https://arxiv.org/



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