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Berlin 2005 – scientific programme

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T: Teilchenphysik

T 306: QCD I

T 306.10: Talk

Friday, March 4, 2005, 18:45–19:00, TU H2035

Jet production in DIS — •Wenbiao Yan — c/o DESY FH1, Notkestr. 85, 22607 Hamburg

Jet production is studied in the Breit frame in deep inelastic positron proton scattering over a large range of four-momentum transfers 150 < Q2 < 15000 GeV2 and transverse jet energies 7 < ET < 50 GeV. The analysis is based on data corresponding to an integrated luminosity of Lint ∼ 65 pb−1 taken in the years 1999-2000 with the H1 detector at HERA at a center-of-mass energy sqrt(s)=318 GeV. Dijet and inclusive jet cross sections are measured multi-differentially using the longitudinally invariant kT cluster algorithm. The results are compared to the predictions of perturbative QCD calculations in next-to-leading order in the strong coupling constant αs. The ratio R3/2 of the trijet to the dijet cross section as a function of Q2 is also shown.

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