Journal
PHYSICAL REVIEW C
Volume 85, Issue 3, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevC.85.034002
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Funding
- US Department of Energy [DE-AC05-06OR23177, DE-FG02-04ER41338]
- NSF [PHYS-0854912]
- Jefferson Science Associates, LLC under US Department of Energy [DE-AC05-06OR23177]
- U.S. Department of Energy (DOE) [DE-FG02-04ER41338] Funding Source: U.S. Department of Energy (DOE)
- Division Of Physics
- Direct For Mathematical & Physical Scien [0854912] Funding Source: National Science Foundation
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We discuss the subleading contact interactions, or counterterms, of the triplet channels of nucleon-nucleon scattering in the framework of chiral effective field theory, with S and P waves as the examples. The triplet channels are special in that they allow the singular attraction of one-pion exchange to modify Weinberg's original power-counting (WPC) scheme. With renormalization group invariance as the constraint, our power counting for the triplet channels can be summarized as a modified version of naive dimensional analysis in which, when compared with WPC, all of the counterterms in a given partial wave (leading or subleading) are enhanced by the same amount. More specifically, this means that WPC needs no modification in S-3(1)-D-3(1) and P-3(1), whereas a two-order enhancement is necessary in both P-3(0) and P-3(2)-F-3(2).
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