Artículos de revistas
D*D rho vertex from QCD sum rules
Fecha
2011Registro en:
NUCLEAR PHYSICS A, v.852, n.1, p.127-140, 2011
0375-9474
10.1016/j.nuclphysa.2011.01.001
Autor
Rodrigues, Bruno Osório
Bracco, Mirian Enriqueta
Nielsen, Marina
Navarra, Fernando Silveira
Institución
Resumen
We calculate the form factors and the coupling constant in the D*D rho vertex in the framework of QCD sum rules. We evaluate the three-point correlation functions of the vertex considering D, rho and D* mesons off-shell. The form factors obtained are very different but give the same coupling constant: g(D*D rho) = 4.3 +/- 0.9 GeV(-1). (C) 2011 Elsevier B.V. All rights reserved.