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2 years ago

On mass hierarchies in Orientifolds

On mass hierarchies in Orientifolds

Plan of the talk C•

Plan of the talk C• Introduction and motivation• D-brane realizations of the Standard Model• Mass matrix general forms• An interesting example• Hierarchies• ConclusionsSunday, July 5, 2009

Introduction and Motivation• One of the biggest puzzles of the Standard Model is the origin andhierarchy of masses and mixings.• The range of masses between the t-quark and the lightest neutrinospans 15 orders of magnitude!• Several mechanism have been proposed to explain (parts of) themass hierarchy in SM.Sunday, July 5, 2009• In this talk we want to:Talk of Leontaris- investigate the mechanism for the mass hierarchy in openstring models (aka orientifolds).- To establish the kind of the SM embeddings that canaccommodate such mechanism.

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