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Alharazin, H.; Sun, B.-D.; Epelbaum, E.; Gegelia, J.; Meißner, U.-G.
The journal of high energy physics, 1/3, Letnik: 2024, Številka: 3Journal Article
A bstract The gravitational form factors of the transition from the proton to the ∆ + resonance are calculated to leading one-loop order using a manifestly Lorentz-invariant formulation of chiral perturbation theory. We take into account the leading electromagnetic and strong isospin-violating effects. The loop contributions to the transition form factors are found to be free of power-counting violating pieces, which is consistent with the absence of tree-level diagrams at the considered order. In this sense, our results can be regarded as predictions of chiral perturbation theory.
