Gravitational $p\to {\Delta }^{+}$ transition form factors in chiral perturbation theory

Abstract

The gravitational form factors of the transition from the proton to the ${\Delta }^{+}$ 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.

Comments: arXiv admin note: text overlap with arXiv:2209.01233