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

Applying the developed Bethe-Salpeter theory for dealing with resonance, weinvestigate the time evolution of molecular state composed of two vector mesonsas determined by the total Hamiltonian. Then exotic meson resonance$\chi_{c0}(3915)$ is considered as a mixed state of two unstable molecularstates $D^{*0}\bar{D}^{*0}$ and $D^{*+}D^{*-}$, and the mass and width forphysical resonance $\chi_{c0}(3915)$ are calculated in the framework ofrelativistic quantum field theory. In this actual calculation, we minutely showhow to obtain the correction for energy level of resonance and to exhibit thekey features of dispersion relation in an extended Feynman diagram. Thenumerical results are consistent with the experimental values.

Calculation of mass and width of unstable molecular state using the developed Bethe-Salpeter theory