U(1) textures and lepton flavor violation
Φόρτωση...
Ημερομηνία
Συγγραφείς
Gomez, M. E.
Leontaris, G. K.
Lola, S.
Vergados, J. D.
Τίτλος Εφημερίδας
Περιοδικό ISSN
Τίτλος τόμου
Εκδότης
Περίληψη
Τύπος
Είδος δημοσίευσης σε συνέδριο
Είδος περιοδικού
peer reviewed
Είδος εκπαιδευτικού υλικού
Όνομα συνεδρίου
Όνομα περιοδικού
Physical Review D
Όνομα βιβλίου
Σειρά βιβλίου
Έκδοση βιβλίου
Συμπληρωματικός/δευτερεύων τίτλος
Περιγραφή
U(1) family symmetries have led to successful predictions of the fermion mass spectrum and the mixing angles of the hadronic sector. In the context of the supersymmetric unified theories, they further imply a nontrivial mass structure for the scalar partners, giving rise to new sources of flavor violation. In the present work lepton flavor nontonserving_processes are examined in the context of the minimal supersymmetric standard model augmented by a U(1)-family symmetry. We calculate the mixing effects on the mu-->e gamma and tau-->mu gamma rare decays. All supersymmetric scalar masses involved in the processes are determined at low energies using two loop renormalization group analysis and threshold corrections. Further, various novel effects are considered and found to have important impact on the branching ratios. Thus, a rather interesting result is that when the seesaw mechanism is applied in the 12x12 sneutrino mass matrix, the mixing effects of the Dirac matrix in the effective light sneutrino sector are canceled at first order. In this class of models and for the case that soft term mixing is already present at the GUT scale, tau-->mu gamma decays are mostly expected to arise at rates significantly smaller than the current experimental Limits. On the other hand, the mu-->e gamma rare decays impose important bounds on the model parameters, particularly on the supersymmetric scalar mass spectrum. In the absence of soft term mixing at high energies, the predicted branching ratios for rare decays are, as expected, well below the experimental bounds. [S0556-2821(99)08809-8].
Περιγραφή
Λέξεις-κλειδιά
broken supersymmetric theories, neutrino mass matrices, number-nonconservation, unified theories, supergravity theories, yukawa couplings, gauge symmetries, standard model, string models, muon-number
Θεματική κατηγορία
Παραπομπή
Σύνδεσμος
<Go to ISI>://000080778900069
Γλώσσα
en
Εκδίδον τμήμα/τομέας
Όνομα επιβλέποντος
Εξεταστική επιτροπή
Γενική Περιγραφή / Σχόλια
Ίδρυμα και Σχολή/Τμήμα του υποβάλλοντος
Πανεπιστήμιο Ιωαννίνων. Σχολή Επιστημών και Τεχνολογιών. Τμήμα Βιολογικών Εφαρμογών και Τεχνολογιών