Measurement of Multijet Production in DIS and Determination of the Strong Coupling Constant

Physics – High Energy Physics – High Energy Physics - Experiment

Scientific paper

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4 pages, 2 figures, to appear in the proceedings of XIX International Workshop on Deep-Inelastic Scattering and Related Subjec

Scientific paper

Inclusive jet, dijet and trijet differential cross sections have been measured in neutral current deep-inelastic scattering for exchanged boson virtualities $150 < Q^2 < 15000$ GeV$^2$ with the H1 detector at HERA using an integrated luminosity of 351 pb$^{-1}}$. The multijet cross sections are presented as a function of $Q^2$, the transverse momentum of the jet $P_T$ (the mean transverse momentum for dijets and trijets) and the proton's longitudinal momentum fraction of the parton participating in the hard interaction $\xi$. The cross sections are compared to perturbative QCD calculations at next-to-leading order and the value of the strong coupling $\alpha_s(M_Z)$ is determined.

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