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Showing 1 to 6 of 6 for “"Quantenchromodynamik"”.
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Hochenergiestreuung im Nichtperturbativen Vakuum der Quantenchromodynamik
Wir untersuchen Streuung in nichtperturbativer Quantenchromodynamik (QCD) f'ur gro'se invariante Schwerpunktenergie {sqrt s}. Unserer Analyse zugrunde liegt das Modell des Stochastischen Vakuums (MSV) von Dosch und Simonov und die nichtperturbative {s to infty}-asymptotische Formel Nachtmanns f'ur …
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A study of QCD processes at low momentum transfer in hadron-hadron collisions
This PhD thesis concerns the study of QCD soft processes (i.e. involving low transferred momentum) at hadron colliders. QCD (Quantum Chromodynamics) is the theory that describes the strong interactions of quarks and gluons. Since protons consist of quarks and gluons, a collision between them can be …
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Paarproduktion schwerer Quarks in e+ e- -Kollisionen: QCD-Strahlungskorrekturen für die Quark-Antiquark-Beiträge zur Ordnung alpha s 2
In this thesis the QCD corrections to second order in the strong coupling constant, i.e. to order alpha_s^2, for the process e^+ e^- -> Q Qbar are calculated. These are important contributions to the differential cross section of the reaction e^+ e- -> Q Qbar + X. The decay amplitude of a virtual …
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Korrekturen der schwachen Wechselwirkung zur hadronischen Topquark-Paarproduktion
This thesis presents the calculation of the Standard Model weak-interaction corrections of order alpha_s^2 alpha to hadronic top-quark pair production. The one-loop weak corrections to top antitop production due to gluon fusion and uark antiquark annihilation are computed. Also the order alpha_s^2 …