We describe our method for deriving the nuclear electromagnetic charge and current operators in chiral perturbation theory, based on time-ordered perturbation theory. We then discuss possible strategies for fixing the relevant low-energy constants, from the magnetic moments of the deuteron and of the trinucleons, and from the radiative np capture cross sections, and identify a scheme which, partly relying on D resonance saturation, leads to a reasonable pattern of convergence of the chiral expansion.
Nuclear electromagnetic charge and current operators in Chiral EFT
GIRLANDA, Luca;
2012-01-01
Abstract
We describe our method for deriving the nuclear electromagnetic charge and current operators in chiral perturbation theory, based on time-ordered perturbation theory. We then discuss possible strategies for fixing the relevant low-energy constants, from the magnetic moments of the deuteron and of the trinucleons, and from the radiative np capture cross sections, and identify a scheme which, partly relying on D resonance saturation, leads to a reasonable pattern of convergence of the chiral expansion.File in questo prodotto:
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