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

The $\rho(770)$ vector resonance, its radial recurrences, and thecorresponding P-wave $\pi\pi$ phase shifts are investigated in an unquenchedquark model with all classes of relevant decay channels included, viz.pseudoscalar-pseudoscalar, vector-pseudoscalar, vector-vector, vector-scalar,axialvector-pseudoscalar, and axialvector-vector, totalling 26 channels. Two ofthe few model parameters are fixed at previously used values, whereas the otherthree are adjusted to the $\rho(770)$ resonance and the lower P-wave $\pi\pi$phases. Preliminary results indicate the model's capacity to reproduce thesephases as well as the $\rho$ mass and width. However, at higher energies thephase shifts tend to rise too sharply. A possible remedy is an extension of themodel so as to handle resonances in the final states for most of the includeddecay channels. Work in progress.

Unquenched quark-model calculation of excited $\rho$ resonances and P-wave $\pi\pi$ phase shifts