[Theory-seminars] Theory seminars next week

[Christopher Thomas]

Dear all,

We have two seminars next week:
* Monday (1pm, Oct 4th): Gerald Miller (Univ. of Washington)
* Wednesday (2pm, Oct 6th) cake seminar: Alfred Stadler (Lisbon)

Titles, abstracts and more details below.  *NOTE NEW REGULAR WEDNESDAY 
CAKE SEMINAR TIME OF 2PM*.

A complete list of upcoming theory seminars and talks from previous
seminars are available from:
http://www.jlab.org/~thomasc/seminars/


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Monday, Oct 4th
1pm (coffee at 12:45)
Room L104

*Transverse Charge Densities*

Gerald Miller
University of Washington

Electromagnetic form factors have long been used to probe the underlying 
charge and magnetization densities of hadrons and nuclei. 
However,traditional three-dimensional Fourier transform methods are not 
applicable for systems with constituents that move relativistically. The 
use of the transverse charge density is a new, rigorously defined way to 
analyze electromagnetic form factors of hadrons. This talk will discuss 
the following issues: what is a transverse charge density; how is one 
extracted one from experiments; the existing results for the nucleon and 
pion; what is the relationship with other observable quantities such as 
the proton Zemach radius and the shape of the proton; and, future 
prospects.


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Wednesday, Oct 6th
2pm
Room L104

*Electromagnetic three-nucleon form factors in the Covariant Spectator 
Theory*

Alfred Stadler
University of Lisbon

I will give a short overview of the basic features of the Covariant
Spectator Theory and its application to the two- and three-nucleon 
systems.  In this framework, pure one-boson-exchange models of the 
two-nucleon interaction have been found to be very successful in 
describing the two-nucleon data below the pion-production threshold. The 
three-nucleon binding energy is predicted correctly without additional 
three-nucleon forces. I will show first results for the electromagnetic 
three-nucleon form factors, which represents an important test of the 
Covariant Spectator Theory's ability to describe the structure of the 
three-nucleon bound states.

Cake Sponsor: Franz Gross

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Christopher, Hiroyuki and Vadim
JLab Theory Seminar Organizers


-- 
Christopher Thomas

Jefferson Laboratory
12000 Jefferson Avenue
Suite #1
Newport News
VA 23606
USA

Tel: +1 (757) 269 7453
Email: thomasc at jlab.org