[Jlab-seminars] Today's 11am Seminar Canceled

[Douglas Higinbotham]

Due to the storms yesterday afternoon, our seminar speaker's flights were canceled and he was not be able to come today.

Best Wishes,
Douglas


----- Original Message -----
From: "Luci Collins" <lcollins at jlab.org>
To: jlab-seminars at jlab.org, "Luci Collins" <lcollins at jlab.org>
Sent: Thursday, June 13, 2013 9:35:17 AM
Subject: [Jlab-seminars] Physics Seminar


Physics Seminar 
Fri. June 14th 
11:00AM 
CEBAF Center AUD. 
Coffee & Cookies 10:45AM 

Willem Dickhoff 
Washington Univ. 

"INTERSECTION OF SOFT (LONG-RANGE) AND HARD (SHORT-RANGE) PROCESSES IN NUCLEI" 

The present understanding of the role of short- and long-range physics in determining proton properties near the Fermi energy for stable closed-shell nuclei has relied on data from the (e,e'p) reaction but is also supported by other experimental observations. Hadronic tools to extract such spectroscopic information are hampered by the lack of a consistent reaction description that provides unambiguous and undisputed results. The dispersive optical model (DOM), originally conceived by Claude Mahaux, provides a unified description of both elastic nucleon scattering and structure information related to single-particle properties below the Fermi energy. The DOM provides a framework in which nuclear reactions and structure data can be analyzed consistently to provide unambiguous spectroscopic information including its nucleon asymmetry dependence. An extension of the method to describe nuclear charge densities requires the introduction of non-local absorptive potentials which sheds new light on the treatment of nucleon distorted waves. The properties on ab initio non-local potentials provide further insight. The current DOM implementation can adequately describe the high-momentum spectral function extracted from JLab experiments. The implication for the importance of three-body nuclear forces is clarified. 













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