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 Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We discuss the compatibility between the quark-shell picture and themeson-nucleon scattering picture in large $N_c$ QCD for mixed symmetric $\ell$= 1 states previously analyzed by using a simple Hamiltonian includingoperators up to order $\mathcal{O}(N^0_c)$ defined in the standard ground statesymmetric core + excited quark procedure. Here we introduce a Hamiltonian oforder $\mathcal{O}(N^0_c)$ defined in a new approach where the separation ofthe system into two parts is not required. Three degenerate sets of states(towers) with the same quantum numbers as in the scattering picture and in thestandard procedure are obtained. Thus the 0 is equally achieved. Theeigenvalues of the presently chosen Hamiltonian also have simple analyticexpressions, depending linearly on the three dynamical coefficients enteringthe Hamiltonian. This reinforces the validity of the new approach which hadalready 0 described excited negative parity baryons in a large energy range.

Negative parity baryons in the $1/N_c$ expansion: the three towers of states revisited