Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2003-09-23
Phys.Lett.B579:59-66,2004
Physics
High Energy Physics
High Energy Physics - Phenomenology
11 pages, 2 figures, using Revtex4
Scientific paper
10.1016/j.physletb.2003.10.102
We use the QCD sum rules to evaluate the form factors associated with the semileptonic decays of $D_s$ and $D$ mesons into $f_0(980)$. We consider the $f_0(980)$ meson as a quark-antiquark state with a mixture of strange and light components. The decay rates are evaluated in terms of the mixing angle. Using the same form factors to evaluate nonleptonic decays in the framework of the factorization approximation we conclude that the importance of the light quarks in $f_0(980)$ is not negligible.
Bediaga Ignacio
Navarra Fernando S.
Nielsen Marina
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