Monday, June 15, 2009 Special Physics Colloquium, 4:30 PM, 102 Allen Hall, PITT

Prof. Alexander Dolgov

University of Ferrara, INFN (Italy) and ITEP (Russia)

"Cosmic Antimatter"

Abstract:

I will present a review of possible scenarios of baryogenesis and will argue that a significant amount of cosmological antimatter can be an outcome of the good old baryogenesis mechanism(s). I will also discuss the sources of CP violation and various models that predict the amount of antimatter in the universe. Depending upon the scenario actually realized in nature, cosmological antimatter can form quite different types of astronomical objects which may be present even in our galaxy. I will consider phenomenological manifestation of such objects and will discuss the possibility of their observation with the existing and near-future cosmic missions.