Speaker
Mrs
Raquel Molina
(IFIC)
Description
We study the vector-vector interaction within the framework of the hidden gauge formalism for the channels with quantum numbers charm C=0 and strangeness S=0 in the energy region around 4000 MeV. By looking for poles in the complex plane we find three resonances that could be identified by the mass, width, and quantum numbers with the Y(3940), Z(3940), and X(4160), these poles appear with isospin I=0 and JPC=0++, 2++ and 2++, respectively. Whereas the Y(3940) and Z(3940) are coupled more strongly to D*D̅ *, the X(4160) is basically a Ds*D̅ s* molecular state. Another two extra resonances appear in our approach with I=0, 1 and JPC=1+-, 2++ which are not found in the PDG with masses M=3945, 3912 MeV and widths Γ=0, 120 MeV, respectively. In addition, the radiative decays of these hadrons will be mentioned.
Primary author
Mrs
Raquel Molina
(IFIC)
Co-author
Prof.
Eulogio Oset
(IFIC)
