3rd International Conference on the Initial Stages in High-Energy Nuclear Collisions (InitialStages2016)

Session

Poster

Not scheduled

Grande Anfiteatro (Centro de Congressos, Instituto Superior Técnico, Alameda Campus)

39. Collective effects in pp from pQCD and hydro approach

Dr Guy Paic (Instituto de Ciencias Nucleares, UNAM)

Poster

The fact that small systems created in high multiplicities pp collisions exhibit features very similar to those encountered in heavy-ion collisions has provoked a number of phenomenological works aimed at explaining the observed results. In this work we will present the result of two models that are fundamentally different. One is Pythia 8 that has proved to be able to reproduce many...

53. Comparison of hydrodynamics with kinetic transport theory for pA and AA collisions

Kai Gallmeister (Goethe Universität Frankfurt)

Poster

The good agreement of calculations on the basis of dissipative hydrodnamics with the experimental data from p+A collisions seems to point to strong collective behavior and a fast thermalization. Neverthelesss, already for A+A collisions, large dissipative corrections are necessary. We examine by a direct comparison of hydrodynamic calculations with calculations performed with the partonic...

78. Correlations between mean transverse momenta

Vladimir Vechernin (St. Petersburg State University (RU))

Poster

The study of the correlations between observables in two separated rapidity windows separated in rapidity has been proposed [1] as a signature of the string fusion and percolation phenomenon, which is one of the collectivity effects [2] in ultrarelativistic heavy ion collisions. In this work we study the correlations between the values of mean-event transverse momentum...

24. Fluidity measure from effective field theory

Mr Miklós Horváth

Poster

We consider an effective field theory description of quasi-particle excitations aiming to associate the transport properties of the system with the spectral density of states. Tuning various properties of the many-particle correlations, we investigate how robust microscopic features are translated into the macroscopic observables like shear viscosity and entropy density. The liquid-gas...

19. Hadroproduction of phi-mesons in the Quark-Gluon String model

Prof. Carlos Merino (University of Santiago de Compostela)

Poster

We consider the experimental data on phi-meson production in
hadron-nucleon collisions for a wide energy region. The Quark-Gluon String
Model quantitatively describes the spectra of secondary phi, as well as
the ratios of phi/pi- and phi/K- production cross
sections.

79. Jet production in p-Pb collisions with ALICE

Boris Hippolyte (Institut Pluridisciplinaire Hubert Curien (FR))

Poster

Jets in Pb-Pb collisions are suppressed relative to the expectations from pp collisions. This is attributed to energy loss in the Quark-Gluon Plasma (QGP). However, to fully quantify the effects due to the hot QGP, we must first quantify the effects from cold nuclear matter. Originally it was believed that collisions of protons on lead nuclei provide access to cold nuclear matter effects in...

23. Modelling early quark production and color dynamics for heavy-ion collisions

Dr Daniil Gelfand (Vienna University of Technology)

Poster

We perform real-time lattice simulations of out-of-equilibrium quark production in non-Abelian gauge theory in 3+1-dimensions. Our simulations include the backreaction of quarks onto the dynamical gluon sector, which is particularly relevant for strongly correlated quarks.
We observe fast isotropization and universal behavior of quarks and gluons at weak coupling and establish a quantitative...

18. Mometum-space anisotropy in a rapidly expanding Quark-Gluon-Plasma

Vinod Chandra (IIT Gandhinagar, India)

Poster

Momentum-space anisotropy present during the space-time evolution of quark-gluon-plasma (QGP) produced in relativistic heavy-ion collisions may play crucial role in deciding the bulk and transport properties of the QGP. Such anisotropies can lead to Chromo-Weibel instability and responsible for turbulent Chromo-fields in RHIC. We shall highlight the relevance of such effects induced by the...

51. On the applicability of the Wigner functional approach to the description of far-from-equilibrium quantum fields.

Anna Radovskaia (Russian Academy of Sciences (RU))

Poster

We consider toy $\phi^4 $ -like model of quantum evolution of matter created at the early stages of ultrarelativistic heavy ion collisions.
With the aid of the Keldysh technique we derive systematic semiclassical expansion of the quantum field dynamics.
The Leading Order term of this expansion supports the well-known recipe for calculation of an observable -- averaging over initial...

84. QCD Flux tubes at finite temperature

Pedro Bicudo (IST Lisboa)

Poster

In this work, we show the flux tubes of the quark-antiquark and quark-quark at finite temperature, computed with pure gauge SU(3) lattice QCD. The chromomagnetic and chromoelectric fields are calculated above and below the deconfinement phase transition.

80. Repulsion of quark-gluon strings and flow harmonics in hadron collisions

Dr Grigori Feofilov (St. Petersburg State University (RU))

Poster

Color flux tubes (quark-gluon strings), formed at early stages of hadron- hadron collision, may overlap in case of sufficiently high densities and interact by repelling or attracting each other, depending on the direction of the color fluxes (V.A. Abramovsky, O.V. Kanchely, 1980). Thus, in the hypothesis of repulsive interaction, in case of opposite color fluxes, strings may acquire, before...

88. Shadowing effects in Glauber modelling of nucleus-nucleus collisions and the initial state through spectators and net charge

Sandeep Chatterjee (Variable Energy Cyclotron Centre)

Poster

We will discuss the effect of including shadowing due to leading nucleons on those
located in the interior in the standard two-component Glauber model of nucleus-nucleus
collisions. It will be shown that there is a much better agreement between model and data
for various observables after including shadowing effects. We will also discuss on a new
way for event shape engineering through...