Nuclear axial currents in chiral effective field theory
Journal Article
·
· Physical Review C
- Old Dominion Univ., Norfolk, VA (United States)
- Univ. of Salento and INFN-Lecce, Lecce (Italy)
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Univ. of South Carolina, Columbia, SC (United States)
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States); Old Dominion Univ., Norfolk, VA (United States)
- INFN-Pisa, Pisa (Italy)
In this study, two-nucleon axial charge and current operators are derived in chiral effective field theory up to one loop. The derivation is based on time-ordered perturbation theory and accounts for cancellations between the contributions of irreducible diagrams and the contributions owing to nonstatic corrections from energy denominators of reducible diagrams. Ultraviolet divergencies associated with the loop corrections are isolated in dimensional regularization. The resulting axial current is finite and conserved in the chiral limit, while the axial charge requires renormalization. A complete set of contact terms for the axial charge up to the relevant order in the power counting is constructed.
- Research Organization:
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States); Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Nuclear Physics (NP)
- Grant/Contract Number:
- AC05-06OR23177; AC52-06NA25396; PHY1068305; PHY-1068305
- OSTI ID:
- 1237076
- Alternate ID(s):
- OSTI ID: 1234301; OSTI ID: 1248905
- Report Number(s):
- JLAB-THY-15-2139; DOE/OR/23177-3557; arXiv:1509.07039; LA-UR-15-27549; PRVCAN
- Journal Information:
- Physical Review C, Vol. 93, Issue 1; ISSN 2469-9985
- Publisher:
- APSCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Cited by: 58 works
Citation information provided by
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