International Workshop
"The Structure and Dynamics of Hadrons"
Hirschegg, Kleinwalsertal, Austria -
Information

Title:
Family Name:	Crede
First Name:	Volker
Gender:	male
E-Mail:	credefsu.edu
Affiliation for Badge:	Florida State University
Institute:
Address (Street):	Department of Physics
Postal Code, City:	32306
Country:	United States
Phone:	001 850 644-2423
Fax:	001 850 644-4478
Arrival Date:	January 16
Departure Date:	January 22
	1
Accommodation:	Waldemar-Petersen-Haus
Room Type:	Single room ( ~260-275 ¿ depending on room size )
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	nearby boarding house
Author(s):	Volker Crede
Institute(s):	Florida State University
Title of talk:	Recent Results in Baryon Spectroscopy
Abstract:	High-energy electrons and photons are a remarkably clean probe of hadronic matter, essentially providing a microscope for examining atomic nuclei and the strong nuclear force. For more than a decade, laboratories worldwide (Jefferson Lab, ELSA, MAMI, etc.) have accumulated data for such investigations, resulting in a number of surprising discoveries and contributing to our understanding of the nucleon, its underlying quark structure, and the dynamics of the strong interaction. The spectrum of excited nucleons can serve as an excellent probe of Quantum Chromodynamics (QCD), the fundamental theory of strong interactions. Since nucleons are complex systems of confined quarks, they exhibit the characteristic spectra of excited states. Highly excited nucleon states are sensitive to details of quark confinement which is poorly understood within QCD. Among many other things, a long-standing question in hadronic physics is whether the large number of so-called missing baryon resonances is realized in nature, i.e. experimentally not established baryon states which are predicted by quark models based on three constituent quark effective degrees of freedom. The current effort at facilities around the world studying the systematics of hadron spectra is to utilize highly-polarized frozen-spin (butanol) and deuterium targets in combination with polarized photon beams. These are important steps toward complete experiments that allow us to unambiguously determine the scattering amplitude in the underlying reactions and to identify resonance contributions.
Comment:

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