Light-Front and 4-D Hadron Structures

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Date/Time:Wednesday, 14 Nov 2018 from 4:10 pm to 5:00 pm
Location:A401 Zaffarano Hall
Contact:James P. Vary
Phone:515-294-8894
Channel:College of Liberal Arts and Sciences
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Dr. Tobias Frederico, Instituto Technologia Aeronautica, Brazil, and Fulbright Scholar, Iowa State University, USA

The relativistic description of the structure of composite states can be either within the field theoretical framework of the 4D Bethe-Salpeter equations, defined in the Minkowski and Euclidean spaces, and also within the three-dimensional reduction to the light-front hyperplane, where the hadrons are eigenstates of the interacting mass operator. The relation between the Light-Front and 4D descriptions in Minkowski, Euclidean and in between, for the composite state will be discussed, resorting also to an integral representation of the Bethe-Salpeter amplitude. The discussion will be illustrated by examples of two-boson bound state and a quark-antiquark bound state forming a mock pion. The three-body problem will also be briefly addressed in the different descriptions.