Measurement of internal jet structure in dijet production in deep-inelastic scattering at HERA
Abstract
Internal jet structure in dijet production in deep-inelastic scattering is measured with the H1 detector at HERA. Jets with transverse energies ET,Breit > 5 GeV are selected in the Breit frame employing k⊥ and cone jet algorithms. In the kinematic region of ssquared momentum transfers 10 < Q2 ⪅ s 120 GeV 2 and Bjorken- x values 2 < 10 -4 ⪅ xBj ⪅ 8 × 10 -3, jet shapes and subjet multiplicities are measured as a function of a resolution parameter. Distributions of both observables are corrected for detector effects and presented as functions of the transverse jet energy and jet pseudo-rapidity. Dependences of the jet shape and the average number of subjets on the transverse energy and the pseudo-rapidity of the jet are observed. With increasing transverse jet energies and decreasing pseudo-rapidities, i.e. towards the photon hemisphere, the jets are more collimated. QCD models give a fair description of the data.
- Publication:
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Nuclear Physics B
- Pub Date:
- April 1999
- DOI:
- 10.1016/S0550-3213(99)00118-2
- arXiv:
- arXiv:hep-ex/9901010
- Bibcode:
- 1999NuPhB.545....3A
- Keywords:
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- High Energy Physics - Experiment
- E-Print:
- 18 pages, 6 figures, submitted to Nucl. Phys. B