$D^* D_s K$ and $D_s ^* D K$ vertices in a QCD Sum Rule approach

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dc.creatorBracco, M. E.
dc.creatorCerqueira Jr., A.
dc.creatorChiapparini, M.
dc.creatorLozea, A.
dc.creatorNielsen, M.
dc.date2006-04-19
dc.date.accessioned2026-07-07T10:45:05Z
dc.date.available2026-07-07T10:45:05Z
dc.descriptionWe calculate the strong form factors and coupling constants of $ D^* D_s K$ and $D_s^* D K$ vertices using the QCD sum rules technique. In each case we have considered two different cases for the off-shell particle in the vertex: the ligthest meson and one of the heavy mesons. The method gives the same coupling constant for each vertex. When the results for different vertices are compared, they show that the SU(4) symmetry is broken by around 40%.
dc.description10 pages, 8 figures. Submitted to Phys. Lett. B
dc.identifierhttps://arxiv.org/abs/hep-ph/0604167
dc.identifierhttp://arxiv.org/abs/hep-ph/0604167
dc.identifierPhys.Lett.B641:286-293,2006
dc.identifierdoi:10.1016/j.physletb.2006.08.058
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/182810
dc.subjectHigh Energy Physics - Phenomenology
dc.title$D^* D_s K$ and $D_s ^* D K$ vertices in a QCD Sum Rule approach
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