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Title: Nuclear electromagnetic charge and current operators in Chiral EFT

We describe our method for deriving the nuclear electromagnetic charge and current operators in chiral perturbation theory, based on time-ordered perturbation theory. We then discuss possible strategies for fixing the relevant low-energy constants, from the magnetic moments of the deuteron and of the trinucleons, and from the radiative np capture cross sections, and identify a scheme which, partly relying on {Delta} resonance saturation, leads to a reasonable pattern of convergence of the chiral expansion.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [5] ;
  1. Università del Salento
  2. Univ. Pisa
  3. Department of Physics and Astronomy, University of South Carolina, Columbia, SC
  4. Department of Physics, Old Dominion University, Norfolk, VA
  5. Old Dominion U., JLAB
Publication Date:
OSTI Identifier:
1092543
Report Number(s):
JLAB-THY-13-1709; DOE/OR/23177-2547
DOE Contract Number:
AC05-06OR23177
Resource Type:
Conference
Resource Relation:
Journal Name: Proceedings of Science; Journal Volume: CD12; Conference: CD 12, August 6 -10, 2012, Newport News, Virginia, USA
Research Org:
Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
Sponsoring Org:
USDOE Office of Science (SC)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS