[Jlab-seminars] Theory Center Seminar

[Mary Fox]

Theory Center Seminar
Wednesday, Dec. 3, 2014
2:00 p.m.
CEBAF Center, Room L102

Maria Piarulli
Old Dominion University

*Studies of Few-Nucleon EM Structure and Two-Nucleon Interactions in 
$\chi$EFT *

This presentation is divided in two parts. The first part deals with the 
study of the electromagnetic structure
of $A$=2 and 3 nuclei in chiral effective field theory ($\chi$EFT). 
Predictions for static properties and form
factors of the deuteron and trinucleons ($^3$He and $^3$H), by using 
two- and three-nucleon potentials,
charge and current operators derived in $\chi$EFT, are presented. The 
second part consists in constructing
a minimally nonlocal $\chi$EFT nucleon-nucleon ($NN$) potential up to 
next-to-next-to-next leading order
(N$^3$LO) in the chiral expansion, including nucleon and $\Delta$-isobar 
degrees of freedom. Three versions
of the this chiral potential up to N$^3$LO, corresponding to three 
different cutoffs, have been developed with
good fits to np and pp data up to $E_{\rm LAB}\leq 300$ MeV.
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