A momentum subtraction scheme for two-nucleon effective field theory

1998/09/22 by Thomas Mehen, Iain W. Stewart · 6 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph #nucl-th

paper · pdf · doi:10.1016/s0370-2693(98)01470-1

published as Phys.Lett. B445 (1999) 378-386 · 12 pages, 3 figs

arxiv created 1998/09/22 · openalex publication_date 1999/01/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We introduce a momentum subtraction scheme which obeys the power counting of Kaplan, Savage, and Wise (KSW), developed for systems with large scattering lengths, a. Unlike the power divergence subtraction scheme, coupling constants in this scheme obey the KSW scaling for all μ_R > 1/a. We comment on the low-energy theorems derived by Cohen and Hansen. We conclude that there is no obstruction to using perturbative pions for momenta p>m_π.

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• Scheming in dimensional regularization