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 have improved our previous variational method based constituent quarkmodel by introducing a complete set of 3-dimensional harmonic oscillator basesas the spatial part of the total wave function. To assess the validity of ourapproach, we compared the binding energy, thus calculated with the exact valuefor the hydrogen model. After fitting to the masses of the ground statehadrons, we apply our new method to analyze the doubly-heavy tetraquark states$qq'\bar{Q}\bar{Q'}$ and compared the result for the binding energies with thatfrom other works. We also calculated the ground state masses of $T_{sc}(ud\bar{s}\bar{c})$ and $T_{sb} (ud\bar{s}\bar{b})$ with $(I,S) = (0,1),(0,2)$. We found that $T_{bb} (ud\bar{b}\bar{b})$ and $us\bar{b}\bar{b}$, bothwith $(I,S) = (0,1)$, are stable against the two lowest threshold meson stateswith binding energies $-145$ MeV and $-42$ MeV, respectively. We further foundthat $T_{cb} (ud\bar{c}\bar{b})$ is near the lowest threshold. The spatialsizes for the tetraquarks are also discussed.

The Doubly-heavy Tetraquarks ($qq'\bar{Q}\bar{Q'}$) in a Constituent Quark Model with a Complete Set of Harmonic Oscillator Bases