Nuclear electromagnetic charge and current operators in Chiral EFT

Conference · Thu Aug 01 00:00:00 EDT 2013 · Proceedings of Science

OSTI ID:1092543

Girlanda, Luca ^[1]; Marcucci, Laura Elisa ^[2]; Pastore, Saori ^[3]; Piarulli, Maria ^[4]; Schiavilla, Rocco ^[5]; Viviani, Michele

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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

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.

• Research Organization: Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: AC05-06OR23177
• OSTI ID: 1092543
• Report Number(s): JLAB-THY-13-1709; DOE/OR/23177-2547
• Journal Information: Proceedings of Science, Vol. CD12; Conference: CD 12, August 6 -10, 2012, Newport News, Virginia, USA
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS