Beyond the Standard Model: Topics on Chiral Gauge Anomalies and on Neutrino Oscillations

Within the multi-folded research context of beyond the Standard Model physics, the author of this Ph. D. Thesis works on several different research lines: the study of low-energy Supersymmetry effects and of its underlying :flavor and GP-violating structures at the B factories, the exploration of extra-dimension scenarios through gravitational effects on ordinary matter and bulk fields, the development of anomaly cancellation mechanisms for gauge theories in D dimensions, with the study of their phenomenological implications, the discussion about new experimental facilities for testing the structure of the neutrino mass matrix. Not all of the material produced during the Ph. D. activity could be collected here, but the results in two of these fields have been selected: topics related to the cancellation of gauge anomalies and to the phenomenology of neutrino oscillations from artificial sources. As a result, this Thesis has a quite unusual structure: it is divided into two separate parts, which share the effort of Particle Physics to go beyond the Standard Model, but differ by the use of drastically different research techniques and strategies. Each of the two parts contains a brief introduction, which anticipates the main lines of the research program developed and the results obtained, is divided in Chapters and has a specific Bibliography.