English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

It was demonstrated in a series of papers employing unitarized chiralperturbation theory that the phenomenology of the scalar open-charm state, the$D_0^*(2300)$, can be understood as the interplay of two poles, correspondingto two scalar-isospin doublet states with different SU(3) flavor content.Within this formalism the lightest open charm positive parity states emerge asbeing dynamically generated from the scattering of the Goldstone-boson octetoff $D$ mesons, a picture that at the same time solves various problems thatthe experimental observations posed. However, in recent lattice studies of$D\pi$ scattering at different pion masses only one pole was reported in the$D_0^*$ channel, while it was not possible to extract reliable parameters of asecond pole from the lattice data. In this paper we demonstrate how thisseeming contradiction can be understood and that imposing SU(3) constraints onthe fitting amplitudes allows one to extract information on the second polefrom the lattice data with minimal bias. The results may also be regarded as ashowcase how approximate symmetries can be imposed in the $K$-matrix formalismto reduce the number of parameters.

Can the two-pole structure of the $D_0^*(2300)$ be understood from recent lattice data?