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Diffractive jet production in deep inelastic e + p collisions at HERA

Schilling, Frank-Peter

German Title: Diffraktive Jet-Produktion in tief-inelastischer e + p-Streuung bei HERA

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Translation of abstract (English)

A measurement is presented of dijet and 3-jet cross sections in low-t diffractive deep-inelastic scattering interactions of the type ep->eXY, where the system X is separated by a large rapidity gap from a low-mass baryonic system Y. Data taken with the H1 detector at HERA, corresponding to an integrated luminosity of 18.0 pb-1, are used to measure hadron level single and double differential cross sections for 4<Q^2<80 GeV^2, x-pom<0.05 and pT-jet>4 GeV. The energy flow not attributed to jets is investigated. Viewed in terms of the diffractive scattering of partonic fluctuations of the photon, the data require the dominance of q-qbar-g over q-qbar states. The measurements are consistent with a factorising diffractive exchange with an intercept close to 1.2 and tightly constrain the dominating diffractive gluon distribution. Soft colour neutralisation models in their present form cannot simultaneously reproduce the shapes and the normalisations of the differential cross sections. Models based on 2-gluon exchange are able to reproduce the shapes of the cross sections at low x-pom values.

Document type: Dissertation
Supervisor: Eisele, Prof. Dr. Franz
Date of thesis defense: 15 February 2001
Date Deposited: 09 Mar 2001 00:00
Date: 2001
Faculties / Institutes: The Faculty of Physics and Astronomy > Institute of Physics
DDC-classification: 530 Physics
Controlled Keywords: Tiefinelastische Streuung, Hera, Elektron-Proton-Streuung, Starke Wechselwirkung, Diffraktionsstreuung
Uncontrolled Keywords: Elementarteilchenphysik , DESY , QuantenchromodynamikParticle Physics , Quantum Chromodynamics , Deep-Inelastic Scattering , DESY , HERA
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