Conveners
WG3: High Multiplicities (small systems)
- Małgorzata Janik (Warsaw University of Technology)
- Carlota Andres (CPHT, École polytechnique)
WG3: High Multiplicities (small systems)
- Carlota Andres (CPHT, École polytechnique)
- Małgorzata Janik (Warsaw University of Technology)
WG3: High Multiplicities (small systems)
- There are no conveners in this block
WG3: High Multiplicities (small systems)
- There are no conveners in this block
WG3: High Multiplicities (small systems)
- Carlota Andres (CPHT, École polytechnique)
- Małgorzata Janik (Warsaw University of Technology)
In this work, we compute the double-inclusive gluon production cross-section within the framework of the dense-dilute Color Glass Condensate (CGC) approach. As a novelty, we provide the contribution accounting for the quantum correction in which the two gluons come from a single projectile source, thus giving renewed insights about a breaking of the accidental symmetry of the CGC, which...
Many new particles, mostly hadrons, are produced in high-energy collisions between atomic nuclei. The most popular models describing the hadron production process are based on the creation, evolution, and decay of resonances, strings, or quark-gluon plasma. The validity of these models is under vivid discussion, and it seems that a common framework for this discussion is missing. Here we...
The experimental observations of anisotropic flows in proton-proton and proton-nucleus collisions at RHIC and LHC energies has stimulated a big interest in these small systems due to the possible formation of short-lived droplets of quark-gluon plasma. We investigate the effects of nonequilibrium dynamics in relativistic proton-nucleus collisions by comparing a microscopic nonequilibrium...
We will give an overview of the progress in correlations and collectivity from the initial state point of view within the Color Glass Condensate effective theory.
The latest results on the high multiplicity and small system produced within the CMS Collaboration will be discussed.
This talk presents recent ATLAS measurements from small collision systems. A particular focus will be on studies of jet production in p+Pb collisions to search for the jet quenching phenomenon in small systems. Further, the measurement of longitudinal flow decorrelation in pp collisions will be discussed. This study provides information on the initial longitudinal dynamics in small collision...
In this talk, we present our ongoing work on the inclusion of string interactions, namely rope hadronization in heavy ion collisions, as an alternative to QGP. Rope hadronization, where strings in close proximity form higher-order colour multiplets, has been earlier observed to explain QGP-like effects in p-p collisions such as strangeness enhancement.
The main challenge involved in...
Measurements of charm and beauty production in proton-proton (pp) collisions are an important test of perturbative QCD calculations, based on the factorisation approach. Recent results of charm baryon-to-meson ratios in pp collisions at midrapidity have highlighted a significant enhancement of these ratios compared to measurements in e+e– collisions, suggesting that the fragmentation of charm...
I give an overview of recent theoretical work devoted to understanding the observations of collective behavior in small systems (p-p and p-A collisions, or peripheral A-A collisions). I discuss the progress made and some future prospects in relation to the two main facets of this issue, represented, respectively, by the initial state of the collisions and their subsequent dynamics. I highlight...
The collective behaviour, associated with the quark-gluon plasma formation in ultrarelativistic heavy-ion collisions, has been observed also in high-multiplicity collisions of small systems such as pp and p--Pb at the LHC. Using the data recorded with the ALICE experiment, thanks to its unique particle identification capability and the forward multiplicity detectors, it is possible to study...
On behalf of the ZEUS Collaboration.
Collective behaviour of final-state hadrons, and multiparton interactions are studied in high-multiplicity ep scattering at a centre-of-mass energy 𝑠√ = 318 GeV with the ZEUS detector at HERA. Two- and four-particle azimuthal correlations, as well as multiplicity, transverse momentum, and pseudorapidity distributions for charged- particle multiplicities...
