Standard Model Confronting New Results for epsilon'/epsilon

We analyze the CP violating ratio \epe=epsilon'/epsilon in the Standard Model in view of the new KTeV results. We review the present status of the most important non-perturbative parameters B_6, B_8, B_K and of the strange quark mass m_s. We also briefly discuss the issues of final state interactions and renormalization scheme dependence. Updating the values of the CKM parameters, of m_t and Lambda (MSbar) and using Gaussian errors for the experimental input and flat distributions for the theoretical parameters we find \epe substantially below the NA31 and KTeV data: \epe= (7.7^{+6.0}_{-3.5}) 10^{-4} and \epe= (5.2^{+4.6}_{-2.7}) 10^{-4} in the NDR and HV renormalization schemes respectively. A simple scanning of all input parameters gives on the other hand 1.05 10^{-4} < \epe < 28.8 10^{-4} and 0.26 10^{-4} < \epe < 22.0 10^{-4} respectively. Analyzing the dependence on various parameters we find that only for extreme values of B_6, B_8 and m_s and suitable values of CKM parameters and Lambda(MSbar), the ratio \epe can be made consistent with data. We analyze the impact of these data on the lower bounds for Im(V_{td}V_{ts}^*), Br(K_L to pi^0 nu barnu), Br(K_L to pi^0e^+e^-)_{dir} and on tan(beta) in the Two Higgs Doublet Model II.Comment: main latex-file, 4 figures and related latex files, 47 page

Hoehere Ordnungs QCD und QED Strahlungskorrekturen zu #DELTA#S=1 und #DELTA#B=1 nichtleptonischen, schwachen Zerfaellen

Nach einer Einfuehrung in das Konzept der effektiven Hamilton Operatoren fuer die schwache Wechselwirkung wird die existierende LO Renormierungsgruppen-Entwicklung von Wilson Koeffizienten auf NLO Niveau in QCD und QCD-QED erweitert. Fuer die Wilson Koeffizienten des effektiven #DELTA#S = 1 Hamilton Operators werden explizite numerische Werte unter Einschluss von NLO Beitraegen bei der Loesung der RG Gleichung angegeben. (orig./DG)After an introduction to the concept of the effective Hamiltonian operator for weak interactions, the dissertation explains the extension of the existing LO renormalization group development of Wilson's coefficients to the NLO level in QCD and QCD-QED. Explicit numerical values are given for Wilson's coefficients of the #DELTA#S = 1 effective Hamiltonian operator, which take into account the influence of NLO contributions in the equation for the renormalization groups. (orig./DG)SIGLEAvailable from TIB Hannover: H94B984 / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDEGerman