Artículos de revistas
QCD sum rules for the production of the X(3872) as a mixed molecule-charmonium state in B meson decay
Fecha
2011Registro en:
PHYSICS LETTERS B, v.702, n.5, p.359-363, 2011
0370-2693
10.1016/j.physletb.2011.07.018
Autor
ZANETTI, C. M.
NIELSEN, Marina
MATHEUS, R. D.
Institución
Resumen
We use QCD sum rules to calculate the branching ratio for the production of the meson X(3872) in the decay B -> X(3872)K, assumed to be a mixture between charmonium and exotic molecular vertical bar c (q) over bar vertical bar vertical bar q (c) over bar vertical bar states with J(PC) = 1(++). We find that in a small range for the values of the mixing angle, 5 degrees <= theta <= 13 degrees, we get the branching ratio B(B -> XK) = (1.00 +/- 0.68) x 10(-5), which is in agreement with the experimental upper limit. This result is compatible with the analysis of the mass and decay width of the mode J/psi(n pi) and the radiative decay mode J/psi gamma performed in the same approach. (C) 2011 Elsevier B.V. All rights reserved.