Baryon stopping and quark gluon plasma production at RHIC and LHC [Elektronische Ressource] / von Konstantin Lyakhov

Baryon stopping andquark-gluon plasma productionat RHIC and LHCDissertationzur Erlangung des Doktorgradesder Naturwissenschaftenvorgelegt beim Fachbereich Physikder Johann Wolfgang Goethe–Universitat¨in Frankfurt am MainvonKonstantin Lyakhovaus Moskau (Russland)Frankfurt am Main 2008(D 30)vomFachbereichPhysikderJohannWolfgangGoethe–Universitat¨als Dissertation angenommenDekan ........................................Gutachter ........................................Datum der Disputation ........................................0.1. ABSTRACT iI dedicate this thesis to my mam Lyakhova Olga Vic-torovna0.1 abstractStrong chromofields developed at early stages of relativistic heavy-ion col-lisions give rise to the collective deceleration of net baryons from collidingnuclei. We have solved classical equations of motion for baryonic slabs un-der the action of time-dependent chromofield. We have studied sensitivityof the slab trajectories and their final rapidities to the initial strength anddecay pattern of the chromofield as well as to the back reaction of producedplasma. This mechanism can naturally explain significant baryon stoppingobserved at RHIC, an average rapidity losshδyi≈ 2. Using a Bjorken hydro-dynamical model with particle producing source we also study the evolutionof partonic plasma produced as the result of chromofield decay.