Conveners
Collectivity and multiple-scattering: 1
- Korinna Zapp (Lund University)
Collectivity and multiple-scattering: 2
- Jasmine Therese Brewer (CERN)
Measurements of two-particle correlations in $pp$ collisions show the presence of long-range correlations along $\Delta\eta$ that are strikingly similar to those seen in heavy-ion collisions. In heavy-ion collisions, the long-range correlations are known to arise from the collective dynamics of the produced quark-gluon plasma (QGP). The similarity between the $pp$ and heavy-ion measurements...
Efforts to understand QGP signatures using perturbative QCD models have been an active field since the first observation of the near-side long-range two-particle correlations in p-p collisions at the LHC in 2010. On the other hand, tools like Monte Carlo event generators, particularly PYTHIA, have been quite successful at describing LEP physics and also p-p phenomenology. This surprise element...
We explore Glauber Monte Carlo predictions for the planned ultra-relativistic 16O+16O and p+16O collisions, as well as for collisions of 16O on heavy targets [1]. In particular, we present specific collective flow measures which are approximately independent on the hydrodynamic response of the system, such as the ratios of eccentricities obtained from cumulants with different numbers of...
Hydrodynamic expansion and jet quenching are responsible for the production of low and high transverse-momentum ($p_T$) particle in heavy-ion collisions, respectively. However, it is still a challenge to simultaneously describe hadron nuclear modification factor $R_{AA}$ and elliptic flow $v_2$, especially in the intermediate $p_T$ region of 2<$p_T$<10 GeV/c. In this talk, besides...
Measurements of two- and multi-particle angular correlations in DIS and photoproduction ep collisions at $\sqrt{s}=319$ GeV are presented as a function of charged particle multiplicity. The data were collected using the H1 detector at HERA. Since no long-range ridge structure is observed in the correlation functions over the full multiplicity range, upper limits of ridge yield are provided as...
The ALICE experiment studies the physics of strongly interacting matter, focusing on the properties of the Quark-Gluon Plasma (QGP). The relative production of strange hadrons with respect to non-strange hadrons in heavy-ion collisions was historically considered as one of the signatures of QGP formation. Recent results in proton-proton (pp) and proton-lead (p-Pb) collisions have revealed an...
Multi-particle correlations have been compelling tools to probe the properties of the Quark-Gluon Plasma (QGP) created in the ultra-relativistic heavy-ion collisions and the search for the QGP in small collision systems at the LHC. However, only very few of them are available and studied in theoretical calculations and experimental measurements, while the rest are generally very interesting,...
Polarization of Lambda hyperons, produced in relativistic heavy-ion collisions, has been discovered in 2017 by STAR experiment in the Beam-Energy Scan program at RHIC. The trends in the global Lambda polarization are in good agreement with hydrodynamic models. However, the transverse momentum dependence of polarization components in the out-of-plane direction and beam direction does not agree...
Local density fluctuation near the QCD critical point has been suggested to exhibit a power-law behavior which can be probed by an intermittency analysis on scaled factorial moment (SFM) in relativistic heavy-ion collisions.
In this talk, I will firstly review recent heavy-ion experimental results on the intermittency measurement from STAR, NA49 and NA61 collaborations. These results are...
In the relativistic heavy-ion collisions the mean transverse momentum ($[p_{T}]$) and anisotropic flow ($v_n$, n=2,3) have been found to be tightly correlated with the size and initial geometry eccentricity of the produced fireball, respectively. It provides a novel tool to image the deformation of the atomic nuclei at extremely short time scale ($<10^{-24}$s).
In this talk, we present...
