Conveners
Small systems / Azimuthal anisotropies
- Marek Kowalski (Polish Academy of Sciences (PL))
Description
6 seminars, 20 min. each
In this talk we present the consequences of considering correlated constituents inside the proton on the initial state properties of p+p interactions at LHC energies [1,2]. The proton is modeled as a system of gluonic hot spots whose transverse positions are subjected to short-range repulsive correlations. We rely on a Monte Carlo Glauber approach with event-by-event fluctuations in the...
In late 2015, the ALICE collaboration recorded data from Pb-Pb collisions at the unprecedented energy of $\sqrt{s_{NN}}$ = 5.02 TeV as well as data from pp collisions
at the same energy, to be used as a reference for heavy-ions. In Pb-Pb collisions a strongly coupled Quark Gluon Plasma (QGP) is produced which gives rise to collective
phenomena whose signatures can be retrieved in final state...
The measurement of the four-particle cumulant and anisotropic flow coefficient for the second and third flow harmonic, $c_{2}\{4\}$ and $c_{3}\{4\}$, are presented using $pp$ data at $\sqrt{s}=5.02$ and $\sqrt{s}=13$ TeV, and $p+$Pb data at $\sqrt{s_{\text{NN}}}=5.02$ TeV. These measurements aim to assess collective nature of multi-particle production. While collectivity is well established in...
Long range azimuthal correlations are usually regarded as a signature of collectivity, and their discovery in high multiplicity pp collisions has
raised many questions concerning the possible mechanisms behind their creation.
In this talk, we will present the latest results of di-hadron correlations
obtained from pp collisions at $\sqrt{s} = 7$ TeV. We will show per trigger
yields of the...
Small system (p+p, p+A, d/He+A) collisions at RHIC and LHC
exhibit interesting azimuthal anisotropies, with explanations varying
from geometry coupled to final state interactions to glasma diagrams to
color recombination. The PHENIX experiment has extended many of these
observables, including multi-particle cumulants, to lower energies with
the d+Au beam energy scan at 19.6, 39.0, 62.4, and...
New multiparticle observables, which are called "Symmetric 2-harmonic 4-particle cumulants"(SC), were recently introduced in [1]. These quantify the correlation between event-by-event fluctuation of two different flow harmonics. Because the correlation between different order flow harmonics responds differently to the initial conditions or(and) $\eta/s$, SC provide strong constraints for the...
