Speaker
Miguel Angel Escobedo
(Technische Universität München)
Description
Computations with weakly-coupled plasmas and some lattice results suggest that the heavy quarkonium potential has an imaginary part that is important in order to study dissociation. This imaginary part is due to
the scattering with partons in the medium in a process called quasi-free dissociation. At temperatures much below dissociation another process that is known to be important is the gluo-dissociation. The aim of the talk is
to clarify in a perturbative framework the relation of the different expressions for the quarkonium cross-sections that can be found in the literature with the quarkonium thermal width. Finally, with the use of effective field theories we evaluate the quasi-free and gluo-dissociation cross-sections in a wide range of temperatures ranging from the binding energy to the dissociation temperature.
Primary author
Miguel Angel Escobedo
(Technische Universität München)
Co-authors
Antonio Vairo
(Technische Universität München)
Jacopo Ghiglieri
(McGill University)
Nora Brambilla
(Technische Universität München)
