Short-range nuclear forces in singlet channels
Journal Article
·
· Physical Review, C (Nuclear Physics)
Continuing our effort to build a consistent power counting for chiral nuclear effective field theory, we discuss the subleading contact interactions, or counterterms, in the singlet channels of nucleon-nucleon scattering, with renormalization group invariance as the constraint. We argue that the rather large cutoff error of the leading amplitude requires O(Q) of the low-energy approximation to be non-vanishing, contrary to Weinberg's original power counting. This, together with the ultraviolet divergences of two pion exchanges in distorted-wave expansion, leads to enhancement of the 1S0 counterterms and results in a pionless theory-like power counting for the singlet channels.
- 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:
- 1050192
- Report Number(s):
- JLAB-THY-12-1495; DOE/OR/23177-2011; arXiv:1202.4053; PRVCAN; TRN: US1204554
- Journal Information:
- Physical Review, C (Nuclear Physics), Vol. 86, Issue 2; ISSN 0556-2813
- Country of Publication:
- United States
- Language:
- English
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