| Autor: |
Yazıcı, E., Veli Veliev, E., Azizi, K., Sundu, H. |
| Zdroj: |
European Physical Journal Plus; Oct2013, Vol. 128 Issue 10, p1-8, 8p |
| Abstrakt: |
The strong-coupling constants among mesons are very important quantities as they can provide useful information on the nature of strong interaction among hadrons as well as the QCD vacuum. In this article, we investigate the strong vertices of the Ds*Dsη(′) and Bs*Bsη(′) in the framework of the QCD sum rule approach choosing the η or Ds( Bs) meson as an off-shell state. We obtain the results $$g_{D_s^* D_s \eta } = \left( {1.46 \pm 0.30} \right) GeV^{ - 1}$$ , $$g_{D_s^* D_s \eta '} = \left( {0.74 \pm 0.16} \right) GeV^{ - 1}$$ , $$g_{B_s^* B_s \eta } = \left( {5.29 \pm 1.06} \right) GeV^{ - 1}$$ and $$g_{B_s^* B_s \eta '} = \left( {2.29 \pm 0.48} \right) GeV^{ - 1}$$ for the strong-coupling constants under consideration, which can be checked in future experiments. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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