Effective Field Theory and Isospin Violation in Few-Nucleon Systems
I discuss the leading and subleading isospin--breaking three--nucleon forces in the chiral effective field theory framework. I have discussed the leading and subleading isospin-violating 3NFs. The leading contributions are generated by one- and two-pion exchange diagrams with their strength given by the strong neutron-proton mass difference. The subleading corrections are again given by one- and two-pion exchange diagrams, driven largely by the charged-to-neutral pion mass difference and also by the electromagnetic neutron-proton mass difference and the dimension two electromagnetic LEC f{sub 1}. In the future, these isospin-breaking forces should be used to analyze few-nucleon systems based on chiral EFT.
- Research Organization:
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
- Sponsoring Organization:
- USDOE Office of Energy Research (ER) (US)
- DOE Contract Number:
- AC05-84ER40150
- OSTI ID:
- 834195
- Report Number(s):
- JLAB-THY-04-290; DOE/ER/40150-2958; TRN: US0407040
- Resource Relation:
- Conference: 19th European Conference on Few-Body Problems in Physics, Groningen (NL), 08/2004; Other Information: PBD: 1 Aug 2004
- Country of Publication:
- United States
- Language:
- English
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