A5021237941- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Quantum Chromodynamics and Particle Interactions
- Statistical Mechanics and Entropy
- Cosmology and Gravitation Theories
- Material Properties and Processing
- Astro and Planetary Science
- Stellar, planetary, and galactic studies
- Composite Material Mechanics
- Electrochemical Analysis and Applications
- Nuclear reactor physics and engineering
- Quantum chaos and dynamical systems
- Metal Forming Simulation Techniques
- Advanced Electron Microscopy Techniques and Applications
- Analytical Chemistry and Sensors
- Cold Atom Physics and Bose-Einstein Condensates
- International Science and Diplomacy
- Advanced Thermodynamics and Statistical Mechanics
- Particle Detector Development and Performance
Heidelberg University
2025
Heidelberg University
2024-2025
University of Bergen
2019-2024
Heidelberg Institute for Theoretical Studies
2024
HUN-REN Wigner Research Centre for Physics
2019
Eötvös Loránd University
2017-2019
We explore the ability of a recently proposed jet substructure technique, Dynamical Grooming, to pin down properties Quark-Gluon Plasma formed in ultra-relativistic heavy-ion collisions. In particular, we compute, both analytically and via Monte-Carlo simulations, opening angle $\theta_g$ hardest splitting as defined by Grooming. Our calculation, grounded perturbative QCD, accounts for factorization time between vacuum-like medium-induced processes double logarithmic approximation. observe...
We revisit the picture of jets propagating in quark-gluon plasma. In addition to vacuum radiation, partons scatter on medium constituents resulting induced emissions. Analytical approaches including these interactions have traditionally dealt separately with multiple, soft, or rare, hard scatterings. A full description has so far only been available using numerical methods. achieve analytical control relevant scales and map out dominant physical processes phase space. To this aim, we extend...
The analysis of high-energy particle collisions is an excellent testbed for the non-extensive statistical approach. In these reactions we are far from thermodynamical limit. small colliding systems, such as electron-positron or nuclear collisions, number particles several orders magnitude smaller than Avogadro number; therefore, finite-size and fluctuation effects strongly influence final-state one-particle energy distributions. Due to simple characterization, description identified hadron...
A bstract Discriminating quark and gluon jets is a long-standing topic in collider phenomenology. In this paper, we address question using the Lund jet plane substructure technique introduced recent years. We present two complementary approaches: one where quark/gluon likelihood ratio computed analytically, to single-logarithmic accuracy, perturbative QCD, declusterings are used train neural network. For both approaches, either consider only primary or full clustering tree. The analytic...
A bstract In this work, we perform computations of inclusive jet, and semi-inclusive jet-hadron cross sections for minimum bias oxygen-oxygen collisions at RHIC LHC collision energies. We compute the no-quenching baseline jet nuclear modification factor R AA jet-, hadron-triggered factors I . do with state-of-the-art parton distribution functions (nPDFs), next-to-leading-order matrix elements, shower, hadronization. observe deviations from unity due to cold-nuclear matter effects, even...
We define a new strategy to scan jet substructure in heavy-ion collisions. The scope is multifold: (i) test the dominance of vacuum dynamics at early times, (ii) capture transition from coherent incoherent energy loss, and (iii) study elastic scatterings medium, which are either hard perturbative or soft responsible for thermalization. To achieve that, we analyze angular distribution hardest splitting, <a:math xmlns:a="http://www.w3.org/1998/Math/MathML"...
A bstract The steeply falling jet spectrum induces a bias on the medium modifications of observables in heavy-ion collisions. To explore this effect, we develop novel analytic framework to study quenched and its cumulative. We include many energy-loss-related effects, such as soft hard induced emissions, broadening, elastic scattering, fragmentation, cone size dependence, coherence effects. show that different observables, based spectrum, are connected, e.g., nuclear modification, shift,...
The gravitational interaction among bodies orbiting in a spherical potential leads to the rapid relaxation of orbital planes' distribution, process called vector resonant relaxation. We examine statistical equilibrium this for system with similar semimajor axes and eccentricities. extend previous model Roupas et al. (2017) by accounting multipole moments beyond quadrupole, which dominate radially overlapping orbits. Nevertheless, we find no qualitative differences between behavior respect...
A bstract In this work, we analyse the all-orders resummation structure of momentum sharing fraction, z g , opening angle, θ and relative transverse momentum, k t,g splitting tagged by Dynamical Grooming procedure in hadronic collisions. We demonstrate that their does non-exponentiate it is free clustering logarithms. Then, analytically compute probability distributions ( ) up to next-to-next-to-double logarithm accuracy (N 2 DL) narrow jet limit, including a matching leading order α s . On...
A new form of fragmentation function is presented here, motivated by earlier non-extensive studies jet fragmentation. We parametrized our Tsallis-like on pion spectra and compared it to the most common parametrizations. It shown that in agreement with parametrizations, furthermore, its scale evolution overlap better experimental data.
This paper is a write-up of the ideas that were presented, developed and discussed at fourth International Workshop on QCD Challenges from pp to AA, which took place in February 2023 Padua, Italy. The goal workshop was focus some open questions field high-energy heavy-ion physics stimulate formulation concrete suggestions for making progresses both experimental theoretical sides. gives brief introduction each topic then summarizes primary results.
In this work, we perform computations of inclusive jet, and semi-inclusive jet-hadron cross sections for minimum bias oxygen-oxygen collisions at RHIC LHC collision energies. We compute the no-quenching baseline jet nuclear modification factor $R_\mathrm{AA}$ jet-, hadron-triggered factors $I_\mathrm{AA}$. do with state-of-the-art parton distribution functions (nPDFs), next-to-leading-order matrix elements, shower, hadronization. observe deviations from unity due to cold-nuclear matter...
We investigate fluid-to-particle conversion using the usual Cooper-Frye approach but with more general local equilibrium distributions than Boltzmann or Bose/Fermi typically used. Even though we study ideal fluids (i.e., shear stress and bulk pressure are zero everywhere), find a suppression of elliptic flow (v2) at high transverse momenta (pT>1.5 GeV/c), relative to results obtained traditional distributions. The non-viscous shows qualitatively similar features well-known viscous v2; for...
We define a new strategy to scan jet substructure in heavy-ion collisions. The scope is multifold: (i) test the dominance of vacuum dynamics at early times, (ii) capture transition from coherent incoherent energy loss, and (iii) study elastic scatterings medium, which are either hard perturbative or soft responsible for thermalisation. To achieve that, we analyse angular distribution hardest splitting, $\theta_{\rm hard}$, above transverse momentum scale, $k_t^{\rm min}$, high-$p_t$ jets....
Randomly textured polycrystalline materials of constituents with highly anisotropic nature grains can be considered globally isotropic. In order to determine the isotropic properties, like elasticity or conductivity, we propose a theory for averaging coefficients corresponding tensors unifying Voigt's, Reuss' other self-consistent homogenization theories. We apply method elastic moduli untextured polycrystals arbitrary crystal structures, recovering experimental data high precision cubic...
We revisit the picture of jets propagating in quark-gluon plasma. In addition to vacuum radiation, partons scatter on medium constituents resulting induced emissions. Analytical approaches including these interactions have traditionally dealt separately with multiple, soft, or rare, hard scatterings. A full description has so far only been available using numerical methods. achieve analytical control relevant scales and map out dominant physical processes phase space. To this aim, we extend...
Away from the strictly soft and collinear limit of QCD radiation choice evolution scale in a parton shower algorithm is ambiguous several options have been implemented existing Monte Carlo event generators for proton-proton collisions. However, resulting space-time could result subtle differences depending on particular choice. In this work we quantify measurable consequences variable show how implications such propagates into jet quenching observables. We develop general variable, that...