Nucleon-to-Delta transition form factors in chiral effective field theory using the complex-mass scheme
Abstract
We calculate the form factors of the electromagnetic nucleon-to--resonance transition to third chiral order in manifestly Lorentz-invariant chiral effective field theory. For the purpose of generating a systematic power counting, the complex-mass scheme is applied in combination with the small-scale expansion. We fit the results to available empirical data.
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