Speaker
Dr
Marina Nielsen
(Universidade de São paulo)
Description
We determined the production cross sections of the X(3872) state in the reactions
DD→πX, D¯∗D→πX and D¯∗D∗→πX. We construct a formalism considering X as a molecular bound state of D¯0D∗0−c.c, D−D∗+−c.c and D−sD∗+s−c.c. To obtain the amplitudes related to these processes we have made use of effective field Lagrangians. We have evaluated the cross section for the reaction D¯∗D→πX, and find that the diagrams involving the XD¯∗D∗ vertex give a large contribution. We also estimate the XD¯∗D∗ coupling, which turns out to be 1.95±0.22. We then use it to obtain the cross section for the reaction D¯∗D∗→πX and find that, in this case too, the XD¯∗D∗ vertex is relevant. We also discuss the role of the charged components of X in the determination of the production cross sections.
Author
Dr
Marina Nielsen
(Universidade de São paulo)
Co-authors
Dr
Alberto Martinez Torres
(Universidade de São Paulo)
Dr
Fernando Navarra
(Universidade de Sao Paulo)
Dr
Kanchan Khemchandani
(Universidade de Sao Paulo,)
Dr
Luciano Abreu
(Universidade Federal da Bahia)
