Evolution equations for medium-induced QCD cascades and their solutions

Seminarium Zakładu Fizyki Teoretycznej
Prelegent i afiliacja: 
dr hab. Krzysztof Kutak, Instytut Fizyki Jądrowej PAN
śr., 2019-06-12 12:15
NCBJ, sala 404, Pasteura 7

I am going to discuss evolution equations for inclusive distribution of gluons as produced by jet traversing quark-gluon plasma. We reformulate the original equations in such a form that the virtual and unresolved-real emissions as well as unresolved collisions with medium are resumed in a Sudakov-type form factor. The resulting integral equations are then solved most efficiently with use of newly developed Markov Chain Monte Carlo algorithms implemented in a dedicated program called MINCAS. Their results for a gluon energy density are compared with an analytical solution and a differential numerical method. Some results for gluon transverse-momentum distributions are also presented. They exhibit interesting patterns not discussed so far in the literature, in particular a departure from the Gaussian behaviour - which does not happen in approximate analytical solutions.


                                                                                              Serdecznie zapraszamy,

                                               M. Kowal, W. Piechocki, J. Skalski, L. Szymanowski