The authors define a generalised-k_t jet algorithm family for DIS in the Breit frame, extending the prior p=0 case, and test its use for struck-quark jet identification and non-perturbative effects.
Measurement of Internal Jet Structure in Dijet Production in Deep-Inelastic Scattering at HERA
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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_perp and cone jet algorithms. In the kinematic region of squared momentum transfers 10 < Q2 <~ 120 GeV2 and x-Bjorken 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.
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A generalised-$k_t$ jet algorithm for Deep Inelastic Scattering
The authors define a generalised-k_t jet algorithm family for DIS in the Breit frame, extending the prior p=0 case, and test its use for struck-quark jet identification and non-perturbative effects.