Chiral dynamics of/with unstable particles

Abstract

Abstract. We review the achievements of the project C.9. Topics addressed include the magnetic moment of the ρ-meson, elastic pion-nucleon scattering in various settings of chiral perturbation theory, the reaction πN → ππN as well as new directions in chiral perturbation theory.

Muon Capture on $$^3$$ 3 H

“…We do hope that, even in the present shape, our predictions will serve as an important benchmark. In the near future we plan to perform more complete calculations using the locally regularized chiral 2N potential [26,27], supplemented by the consistently regularized chiral 3N forces [28,29] and electroweak current operators [30].…”

The three-nucleon interaction in pionful and pionless effective field theory

“…The three-nucleon force is acknowledged since many decades as an important component of the nuclear interaction. This has been firmly established at the beginning of the current century, when very accurate models of the two-nucleon component of the nuclear interaction, describing thousands of scattering data with a 2 close to 1, became available, either in the form of phenomenological potentials, such as the AV18 [1] or the CD-Bonn [2], or derived within the chiral effective field theory (ChEFT) [3][4][5]. At the same time, accurate numerical methods were developed, which enabled the computation of light-nuclei binding energies from first principles, i.e.…”