P. Christiansen

Quark Gluon Plasma and Color Glass Condensate at RHIC? The perspective from the BRAHMS experiment.

We review the main results obtained by the BRAHMS collaboration on the properties of hot and dense hadronic and partonic matter produced in ultrarelativistic heavy ion collisions at RHIC. A particular focus of this paper is to discuss to what extent the results collected so far by BRAHMS, and by the other three experiments at RHIC, can be taken as evidence for the formation of a state of deconfined partonic matter, the so called quark-gluon-plasma (QGP). We also discuss evidence for a possible precursor state to the QGP, i.e. the proposed Color Glass Condensate.

Transverse momentum spectra in Au+Au and d+Au collisions at s**(1/2) = 200-GeV and the pseudorapidity dependence of high p(T) suppression

We present spectra of charged hadrons from Au+Au and d+Au collisions at sqrt[s(NN)]=200 GeV measured with the BRAHMS experiment at RHIC. The spectra for different collision centralities are compared to spectra from p+(-)p collisions at the same energy scaled by the number of binary collisions. The resulting ratios (nuclear modification factors) for central Au+Au collisions at eta=0 and eta=2.2 evidence a strong suppression in the high p(T) region (>2 GeV/c). In contrast, the d+Au nuclear modification factor (at eta=0) exhibits an enhancement of the high p(T) yields. These measurements indicate a high energy loss of the high p(T) particles in the medium created in the central Au+Au collisions. The lack of suppression in d+Au collisions makes it unlikely that initial state effects can explain the suppression in the central Au+Au collisions.

Nordic consensus on treatment of undescended testes

Aim: To reach consensus among specialists from the Nordic countries on the present state‐of‐the‐art in treatment of undescended testicles.

On the evolution of the nuclear modification factors with rapidity and centrality in d + Au collisions at s(NN)**(1/2) = 200-GeV

We report on a study of the transverse momentum dependence of nuclear modification factors

Pseudorapidity distributions of charged particles from Au+Au collisions at the maximum RHIC energy

R_{dAu}

Charged meson rapidity distributions in central Au+Au collisions at s(NN)**(1/2) = 200-GeV

for charged hadrons produced in deuteron + gold collisions at

Nuclear stopping in Au + Au collisions at s(NN)**(1/2) = 200-GeV.

\sqrt{s_{NN}=\unit[200]{GeV}

Attraction of nonlocal dark optical solitons

, as a function of collision centrality and of the pseudorapidity (

Nuclear Stopping inAu+AuCollisions atsNN=200GeV

\eta = 0,1,2.2,3.2

Nonlinear Science at the Dawn of the 21st Century

) of the produced hadrons. We find significant and systematic decrease of