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Devon Alexander Loomis (Los Alamos National Laboratory (US))23/06/2026, 19:40Poster presentation
The LHCb detector provides a unique environment for investigating spin dynamics and hadronization in high-energy collisions owing to its precise vertex reconstruction and advanced particle identification. Studies of baryon polarization in unpolarized proton-nucleus collisions probe how quark spins contribute to the final-state hadron, shedding light on parton spin transfer and fragmentation...
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Prof. Kyong Chol Han (Prairie View A & M University)23/06/2026, 19:40Poster presentation
We investigate the production of $\phi(1020)$ mesons and $\Omega(1672)$ baryons in central (0โ10\%) PbโPb collisions at $\sqrt{s_{NN}} = 5.02$ TeV at midrapidity ($|y|<0.5$), focusing on their transverse-momentum spectra, elliptic flow $v_{2}$, and nuclear modification factor $R_{AA}$. The study is performed within a hybrid hadronization framework that combines parton recombination and...
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Ankur Yadav (University of Bonn (DE))23/06/2026, 19:40Poster presentation
Oxygen-oxygen (OO) collisions offer a unique opportunity to investigate collectivity and signatures of the medium formed in a smaller collision system compared to the heavy-ion systems such as Pb--Pb. The elliptic flow coefficient $v_2$ is a key observable sensitive to the initial collision geometry and the subsequent evolution of the system. In this context, quarkonia, and in particular the...
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Ethan Fajardo (Graduate Student)23/06/2026, 19:40Poster presentation
Jet reconstruction in A+A collisions is challenging due to high particle multiplicities and energy loss from jet-medium interactions. Conventional reconstruction methods are often limited in efficiency, particularly for low-momentum jets. Wavelet-based approaches provide an event-by-event multiscale decomposition that separates localized jet-like structures from diffuse background while...
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Kuan Lu (Vanderbilt University)23/06/2026, 19:401Poster presentation
We present a novel measurement of in-jet azimuthal asymmetry in $\sqrt{s}=91.2\,\mathrm{GeV}$ $e^+e^-$ collisions, providing a precision vacuum reference and a controlled bridge to QGP-like collectivity. Using ALEPH data and validated simulations, we extract fully-unfolded, per-jet constituent Fourier harmonics $V_n$ ($n=1\text{-}3$) with respect to the jet axis. We compare the Winner-Take-All...
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Sungtae Cho23/06/2026, 19:40Poster presentation
We discuss anisotropic flow, or elliptic and triangular flow of the J/ฯ, ฯ(2S), and ฯc1(1P) in relativistic heavy ion collisions based on the coalescence model. Starting from the investigation on transverse momentum distributions of the above charmonium states, we calculate their elliptic and triangular flow when they are produced by quark recombination. By not only incorporating the Gaussian...
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Mr Jun Zhang (The University of Alabama)23/06/2026, 19:40Poster presentation
The speed of sound is a key parameter for characterizing equilibrium states. However, sound waves change their properties when propagating through rapidly evolving anisotropic media, such as the quark-gluon plasma created in heavy-ion collisions. This paper uses N = 4 Super-Yang-Mills theory to numerically study the time evolution of the speed and attenuation of sound modes along with the...
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Shuangyi Zhou (Vanderbilt University)23/06/2026, 19:40Poster presentation
Many modern jet clustering algorithms, such as the anti-$k_T$ algorithm, were proposed after LEP had concluded. This poses a unique opportunity and challenge for analyzing the archived $e^+e^-$ data from the LEP era. Jets are re-clustered with the $e^+e^-$ variant of the anti-$k_T$ algorithm across a wide range of resolution parameters, ranging from 0.1 to 1.2. As a clean test of jets and QCD...
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Surkhab Kaur23/06/2026, 19:40Poster presentation
We present a preliminary Bayesian parameter estimation study of Pb+Pb collisions at โsโโ = 5.02 TeV using the NuclearConfectionery framework, which combines Trento initial conditions, CCAKE 2.0 viscous hydrodynamics, BQSSampler particlization, and the SMASH hadronic afterburner. Gaussian Process Emulators trained on 176 design points were used to model charged-particle multiplicities, mean...
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Dr Biaogang Wu (Cyclotron Institute, Texas A&M University)23/06/2026, 19:401Poster presentation
We present a comprehensive transport study of bottomonium production in ultra-relativistic heavy-ion collisions, based on a semiclassical rate-equation framework embedded in a realistic (3+1)D viscous hydrodynamic description of the expanding quark-gluon plasma (QGP) [1]. The in-medium reaction rates are constructed from a nonperturbative $T$-matrix approach, constrained by lattice-QCD inputs...
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Ahsan Mehmood Khan (University of Science and Technology of China (CN))23/06/2026, 19:40Poster presentation
Precise and stable energy calibration of hadronic calorimeters is essential for reliable jet and energy measurements in high-energy nuclear collisions. In the sPHENIX experiment, the hadronic calorimeter (HCAL) consists of an inner (IHCal) and an outer (OHCal) section, composed of scintillating tiles interleaved with absorber plates and read out via wavelengthshifting fibers coupled to...
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Aahana Brahma (Georgia State University)23/06/2026, 19:40Poster presentation
Jet shape observables probe the internal structure of jets and are sensitive to differences between quark- and gluon-initiated radiation patterns, and thus they provide insight into the parton-to-jet fragmentation process. This poster presents a feasibility study of differential and integrated jet shapes in proton-proton collisions at a center-of-mass energy of 200 GeV, using...
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Khovesh Anthony Ramdin (Rutgers State Univ. of New Jersey (US))23/06/2026, 19:40Poster presentation
Jets have been used as an indirect probe to study the properties of the quark gluon plasma (QGP). Machine learning (ML) models are a useful means for performing studies in general because they can learn complex patterns and relationships from data without requiring explicit analytic solutions. This is particularly useful when it is difficult to obtain solutions using traditional methods, as is...
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Joonsuk Bae (Sungkyunkwan University (KR))23/06/2026, 19:401Poster presentation
Jets, collimated showers of particles originating from high-energy parton scatterings, are powerful probes of perturbative QCD. After an initial hard scatter, their evolution involves a perturbative shower followed by hadronization. As such, their internal structure provides sensitivity to the dynamics of QCD across a wide range of scales.
Using the upgraded Inner Tracking System (ITS2) and...
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Bruno Scheihing (KITP, University of California, Santa Barbara), Xiaojun Yao (University of Washington)23/06/2026, 19:401Poster presentation
The in-medium dynamics of quarkonium, bound states of heavy quark-antiquark pairs, is one of the few examples of physical processes that can be studied in heavy ion collisions where a frequency-dependent two-point function of the quark-gluon plasma (QGP) degrees of freedom may be probed directly. Traditional phenomenological calculations make the Markovian assumption of no memory effect in the...
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Jaehyeok Ryu (Pusan National University (KR))23/06/2026, 19:40Poster presentation
Jet substructure observables based on final-state hadrons provide sensitive probes of parton-shower evolution and hadronisation. The ALICE Collaboration has measured the transverse momentum fraction, $j_{\mathrm{T}}$, of charged-jet constituents in pp and p--Pb collisions at $\sqrt{s_{\mathrm{NN}}} = 5.02~\mathrm{TeV}$, both inclusively and differentially in the longitudinal momentum fraction,...
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Wooseok Ham (Sungkyunkwan University (KR))23/06/2026, 19:401Poster presentation
Jet quenching, the energy loss and modification of high-energy partons as they traverse a hot and dense medium, serves as a probe of the properties of the Quark-Gluon Plasma (QGP). While jet quenching has been observed in large systems, OO collisions provide an intermediate system, bridging the gap between pp and Pb-Pb collisions. This allows quantitative studies of the onset of jet quenching...
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Thomas Hardin23/06/2026, 19:40Poster presentation
Spatial correlation functions of quarkonia in the quark-gluon plasma are available from finite-temperature lattice-QCD with good precision. However, their interpretation in terms of microscopic spectral functions has been challenging due to numerical oscillations in the Fourier transform and the requirement of a reliable 3-momentum dependence. Utilizing the thermodynamic T-matrix, we first...
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Sara Garetti (Universitรฉ Paris-Saclay (FR))23/06/2026, 19:40Poster presentation
Quarkonium production in high-energy heavy-ion collisions is a key tool to study the production and the properties of the quark-gluon plasma (QGP), a state of matter in which quarks and gluons are no longer confined inside hadrons.
Charmonia are quarkonium bound states consisting of a charm and an anti-charm quark.
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Charmonium production in Pb--Pb collisions is sensitive to the quarkโgluon... -
Ramona Vogt23/06/2026, 19:401Poster presentation
This contribution presents a review of cold nuclear matter (CNM) effects in hadronโnucleus collisions, with a focus on hard probes such as DrellโYan pairs, heavy flavor, and quarkonium production. By examining yield modifications as functions of transverse momentum and rapidity, these studies aim to disentangle key QCD mechanisms, including gluon saturation, nuclear PDFs, and parton energy...
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Elaina Hillary Saltclah (Los Alamos National Laboratory (US))23/06/2026, 19:40Poster presentation
In heavy-ion collisions, collective phenomena in the hot and dense medium known as the QuarkโGluon Plasma (QGP) are probed through measurements of mean transverse momentum and azimuthal particle correlations. Similar correlation patterns observed in small collision systems raise questions about their origin, involving either final-state collective effects or initial-state parton correlations....
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Ms Isabella Danhoni23/06/2026, 19:40Poster presentation
Jets probe the quarkโgluon plasma at its earliest, most far-from-equilibrium stages, when the medium is strongly flowing and highly anisotropic. Medium-induced broadening is typically encoded in a single scalar transport coefficient, the jet quenching parameter $\hat q$, defined in the mediumโs local rest frame. This scalar description is tied to a specific local rest frame and a single...
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Yeonju Go (Brookhaven National Laboratory (US))23/06/2026, 19:402Poster presentation
Accurate modeling of the spaceโtime evolution of the quarkโgluon plasma (QGP) through relativistic hydrodynamics is essential for connecting initial-state fluctuations to final-state observables and for understanding interactions between hard probes and the evolving QGP in heavy-ion collisions. However, full hydrodynamic simulations are computationally intensive, posing major challenges for...
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Nicholas William Retan (Los Alamos National Laboratory (US))23/06/2026, 19:40Poster presentation
This contribution presents an innovative method for deuteron identification at LHCb. By exploiting time-of-flight measurements from the gaseous tracker located downstream of the LHCb magnet, distinct nuclear species, from deuterons to alpha particles, are clearly observed in fixed-target $pHe$ collisions, achieved via helium injection into the LHC beam pipe using the SMOG system. This...
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Emma Charlotte Ege (Goethe University Frankfurt (DE))23/06/2026, 19:40Poster presentation
Correlated electron-positron pairs (dielectrons) are a unique probe for studying the properties of the medium created in relativistic heavy-ion collisions. They are produced at all stages of the collision and leave the system without loss of information, as they do not interact strongly with the medium. However, at LHC energies, thermal dielectrons emitted in the early stages of the collision...
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Tucker Hwang (University of California Berkeley (US)), Tucker Hwang23/06/2026, 19:40Poster presentation
Energy-energy correlators (EECs) are energy-weighted cross-sections of particle pairs. They reflect QCD dynamics across the full scales of jet evolution by separating energy scales in the jet fragmentation through the angular distance of the particle pairs in the jet. Charged EECs probe the energy flux carried by pairs with the same or opposite electric charges. The interplay between energy...
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Dr Tanner Mengel (University of Colorado, Boulder)23/06/2026, 19:40Poster presentation
Measurements of dijet kinematic correlations in heavy ion collisions provide insight into the mechanisms of jet quenching by the quark-gluon plasma. The sensitivity to medium-induced modifications such as dijet $p_T$ asymmetries and angular decorrelations is expected to be enhanced at RHIC, due to the tighter initial kinematic correlations, compared to those at the LHC. This presentation...
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Dr Xin-Nian Wang (Lawrence Berkeley National Lab. (US)), Yu Fu (Duke university)23/06/2026, 19:40Poster presentation
The contribution of photon-gluon fusion to dijet production in deeply inelastic scattering is typically analyzed in the small-x regime, whereas photon-quark scattering dominates at large x. The transition between these regimes has received less attention. In this work, we calculate the leading-order and twist-four photon-gluon fusion contribution within a generalized high-twist framework for...
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Lipei Du (UC Berkeley / LBNL)23/06/2026, 19:40Poster presentation
The dynamical correlation of collective modes and jet quenching is a key open problem in the study of the quark-gluon plasma (QGP). In this contribution we propose a new analysis framework (arXiv: 2512.10265) for exploring dynamical soft--hard correlations in heavy--ion collisions, based on the $p_T$-differential radial-flow observable $v_0(p_T)$ that correlates different components of the...
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Takashi Hachiya (Nara Women's University (JP))23/06/2026, 19:40Poster presentation
The sPHENIX collaboration accumulated 75 $pb^{-1}$ of p+p data in 2024 during the TPC commissioning period. We are developing a novel track reconstruction method based on high-precision silicon vertexing detectors and calorimeters with the goal of pursuing measurements of $J/\psi$ production through its di-electron decay channel using the TPC commissioning dataset.
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In this poster, we describe... -
Shunsuke Kurita (Hiroshima University (JP))23/06/2026, 19:40Poster presentation
Heavy-flavor production measurements in protonโproton (pp) collisions offer stringent tests of perturbative quantum chromodynamics (pQCD) calculations and serve as an essential baseline for heavy-ion collisions studies. Azimuthal correlations of lepton pairs from heavy-flavor hadron decays are sensitive to heavyflavor production mechanisms and, ins heavy-ion collisions, to in-medium energy...
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Ghosoun Adawi (Georgia State University)23/06/2026, 19:40Poster presentation
The science mission of sPHENIX is to make precision measurements of heavy flavor,
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quarkonia, and jets to quantitatively determine the transport properties and micro-
scopic structure of the quarkโgluon plasma created at RHIC. Muon identification in
sPHENIX provides a clean, complementary probe to traditional heavy-flavor identifica-
tion methods, such as secondary vertex tagging and... -
Lorenzo Frosina (Sapienza Universita e INFN, Roma I (IT))23/06/2026, 19:40Poster presentation
The mass of heavy quarks modifies the pattern of QCD radiation inside jets by suppressing soft and collinear gluon emissions through the dead cone effect. In heavy-ion collisions, this mass-dependent effect provides a unique opportunity to probe the interplay between vacuum and medium-induced radiation. We present a Run 2 measurement of the substructure of charm-tagged jets in PbPb collisions...
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McKenna Sleeth (Vanderbilt University)23/06/2026, 19:40Poster presentation
Jets and their QCD emissions are an important topic for the study of parton evolution in the QGP. Quark jets can radiate photons during their parton shower process and so far, these fragmentation photons have remained unexplored during the study of Heavy-ion Collisions. These photons will allow us to explore the EM component of the parton shower in the presence of a medium, which is currently...
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Jackson Reeves Pybus (Los Alamos National Laboratory (US))23/06/2026, 19:40Poster presentation
Femtoscopic techniques provide unique insight into particle production mechanisms in hadronic collisions and into the interactions between short-lived hadrons. These measurements offer an indirect approach to hadron spectroscopy by constraining hadronโhadron interactions and possible bound or resonant states. The excellent momentum resolution of the LHCb detector makes it well suited for...
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Murad Sarsour23/06/2026, 19:40Poster presentation
The $\phi$ meson serves as a key probe for studying the quark-gluon plasma (QGP) due to its short lifetime and the weak interaction of its decay muons with the surrounding hadronic matter, making the $\phi\rightarrow \mu^+\mu^-$ decay channel particularly effective. As a pure $s\bar{s}$ state, the $\phi$ meson provides insight into strangeness enhancement and the mechanisms governing parton...
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Coleridge Faraday (University of Cape Town)23/06/2026, 19:40Poster presentation
We present the first perturbative quantum chromodynamics (pQCD) predictions for modifications to high-momentum particle yields in very light ion collisionsโ${}^{10}\mathrm{B}+{}^{10}\mathrm{B}$, ${}^{6}\mathrm{Li}+{}^{6}\mathrm{Li}$, ${}^{4}\mathrm{He}+{}^{4}\mathrm{He}$, and ${}^{3}\mathrm{He}+{}^{3}\mathrm{He}$โwith and without medium-induced energy loss. We find that our energy loss...
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Laurynette Griffin23/06/2026, 19:40Poster presentation
N-point energy correlators serve as a probe for the dynamics of the Quark-Gluon Plasma (QGP) by providing a map of the final-state particle energy flow. The measurement of jet substructure for low energy jets is complicated due to the impact of the underlying event. In this talk, we present a phenomenological study using Monte Carlo simulations focusing on the Whole Event Energy Correlator...
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Tanmay Pani (Rutgers University)23/06/2026, 19:401Poster presentation
Within jets originating from initial stages of hadron collisions, angular scales have been shown correlated with temporal and energy scales, giving insights into jet evolution from perturbative to non-perturbative quantum chromodynamic (p/npQCD) regimes. Contributions from pQCD interactions to jet substructure are isolated by grooming techniques, which minimizes npQCD effects by removing soft,...
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Ezra Lesser (Los Alamos National Laboratory)23/06/2026, 19:40Poster presentation
Jets produced in conjunction with heavy hadrons provide unique probes of the nonperturbative hadronization process. Heavy-flavor jets can be used to study the hadronization of heavy quarks into heavy-flavor hadrons. In addition, they can reveal how light hadrons are produced during heavy quark hadronization. These studies can be used to constrain the fragmentation functions that are used to...
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Jyotirmoy Roy23/06/2026, 19:40Poster presentation
Heavy quarks are invaluable in probing the bulk properties of the medium. Unfortunately, the interactions between heavy quarks and the light degrees of freedom of the medium are not amenable to a description in terms of perturbative calculations. To remedy this situation, we develop a framework (arXiv: 2510.13942) based on effective field theory to understand the interaction of the heavy quark...
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John Matthew Durham (Los Alamos National Laboratory)23/06/2026, 19:40Poster presentation
Heavy-flavor production studies at LHCb provide precise probes of hadronization in collision systems ranging from $\gamma$Pb interactions to semi-central PbPb collisions. Studies of heavy baryons and mesons containing two different heavy or strange valence quarks probe the interplay of statistical hadronization, coalescence, and multi-parton interactions. LHCb has capabilities to probe the...
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William Horowitz (University of Cape Town)23/06/2026, 19:40Poster presentation
We present predictions from a pQCD-based energy-loss formalism for the leading high-$p_T$ hadron observables $R_{AB}, v_2,v_3$ and $v_4$ in the small systems of pPb, dAu, OO, and NeNe. The energy-loss model is particularly well suited for the study of small systems as the formalism incorporates event-by-event hydrodynamic evolution of the medium's scattering centers, includes short path-length...
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Leonardo Lima Da Silva (Universidade de Sao Paulo (USP) (BR))23/06/2026, 19:40Poster presentation
The Monte Carlo event generator JEWEL (Jet Evolution With Energy Loss) provides a
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theoretical framework to simulate parton energy loss in a dense QCD medium such as the
QuarkโGluon Plasma (QGP). Traditionally, comparisons between theory and experiment
rely on global observables, including the nuclear modification factor $R_{AA}$ and the
dijet momentum imbalance $x_J$. In this work, we take... -
Mr Harvir Dhindsa (Vanderbilt University)23/06/2026, 19:40Poster presentation
Heavy-ion collisions produce a significant excess of low-$p_T$ direct photons that have a large $v_2$. Whether this strong direct photon signal can be explained by thermal photons radiated by the plasma depends critically on the value of the thermal photon emission rate. Building on published rate calculations from hadronic models, lattice QCD, perturbative QCD and holography, we...
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Ibrahim Abualrob (University of Houston (US))23/06/2026, 19:40Poster presentation
Energy-energy correlators (EECs), defined as energy-weighted two-particle correlations within jets as a function of angular separation, have emerged as powerful probes of jet substructure across multiple QCD scales. In vacuum, EECs exhibit a clear separation between perturbative dynamics at large angles and non-perturbative physics at small angles. In heavy-ion collisions, jets traversing the...
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Hyungjun Lee (Sungkyunkwan University (KR))23/06/2026, 19:40Poster presentation
Charmonia are bound states formed by a charm quark and its antiquark (๐๐ยฏ). The creation of the heavy charmโanticharm pair results from hard partonic scattering that can be described within perturbative QCD, whereas the subsequent hadronization into a bound state is governed by non-perturbative QCD dynamics. Therefore, the study of charmonium production provides a key probe of both...
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Christal Martin (University of Tennessee, Knoxville)23/06/2026, 19:40Poster presentation
Bayesian inference efficiently explores high-dimensional theoretical parameter spaces with direct comparisons to experimental data. We present progress towards an analysis framework integrating established tools to enable reproducible, precision calibration of theoretical models in order to ease these comparisons. We use the Rivet toolkit to evaluate theoretical predictions at design points...
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Thomas Boettcher (Indiana University (US))23/06/2026, 19:40Poster presentation
The measurement of prompt dilepton production at hadron colliders represents a key signature of the partonic structure of hadrons, quark-gluon plasma and of the preequilibrium. There exists no measurement at masses below 10~$\rm{GeV}/c$ and low transverse momentum at TeV collision energies due to the dominating background from semileptonic decays of charm and beauty hadrons. We present the...
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Nicholas Jindal (Ohio State University (US))23/06/2026, 19:40Poster presentation
Dielectron production can occur in ultraperipheral heavy ion collisions (UPCs) via the Breit-Wheeler process, in which the quasi-real photons from the heavy ion-induced electromagnetic fields interact to produce a low transverse momentum dielectron pair. This production is sensitive to the charge radius and nuclear shape of the atomic nucleus sourcing the photons. By comparing the momentum...
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Mina Savic (Univ. Illinois at Urbana Champaign (US))23/06/2026, 19:40Poster presentation
Light-ion collisions provide a controlled laboratory to test the path-length dependence of parton energy loss in a QCD medium whose transverse size is significantly smaller than in Pb+Pb, while maintaining high jet rates at the LHC. ATLAS recorded $\sim 8~\mathrm{nb}^{-1}$ of O+O and $\sim 1~\mathrm{nb}^{-1}$ of Ne+Ne data at $\sqrt{s_{\mathrm{NN}}}=5.36~\mathrm{TeV}$ in 2025. This poster...
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Hanpu Jiang (Columbia University)23/06/2026, 19:40Poster presentation
The sPHENIX detector at RHIC sampled with jet triggers $107\,\mathrm{pb}^{-1}$ of p+p collisions at $\sqrt{s}=200\,\mathrm{GeV}$ during the 2024 run, providing the first mid-rapidity hadronic calorimetry at RHIC for direct measurements of neutral-hadron contributions to jet energy. This poster reports the measurement of the inclusive jet production cross section as a function of transverse...
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Josef Bobek (CTU FNSPE)23/06/2026, 19:40Poster presentation
We report on the development of a state-of-the-art framework, the J-PHASE Generator with SUBA-Jet, which simulates partons and hadrons originating from hard scattering together with the evolution of the QGP and the hadronic phase, including the mutual interactions between the jet and the bulk medium and hadrons. The construction of the time-like parton shower and medium-induced radiative...
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Umair Ahmad (New Mexico State university)23/06/2026, 19:40Poster presentation
Calculations of jet quenching often estimate the fractional energy loss $$\epsilon$$ of jets using non-fluctuating mean-field theories, which are adequate for some applications but miss the effects of fluctuations. Previous studies have incorporated fluctuations by constructing a spectrum $$P(\epsilon)$$ using a Compound Poisson Distribution (CPD) built from independent, identical emissions....
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Christine Nattrass (University of Tennessee (US))23/06/2026, 19:40Poster presentation
Systematic comparisons between experimental measurements and theoretical models are essential for validating and improving event generators. Such comparisons offer stringent tests of the underlying physics and its implementation. The RIVET framework enables these studies through standardized and reproducible analysis routines that are directly aligned with published experimental results. ...
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Jordi Salinas San Martin23/06/2026, 19:40Poster presentation
The impact of the cold nuclear medium on hadronization remains an open problem. We introduce an Event-Generator framework for the Electron-Ion Collider that couples hard scattering dynamics and soft final-state interactions through eHIJING and SMASH, respectively. To study hadronization, we use time dependent cross-sections. We adopt a model-agnostic and physics-constrained approach using...
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Joshua Leon Konig (Goethe University Frankfurt (DE))23/06/2026, 19:40Poster presentation
Measurements of direct-photon production in heavy-ion collisions allow for unique insight into the spaceโtime evolution of the hot and dense medium. The absence of final-state interactions and the negligible in-medium path length of photons allows the measurement of photons produced in all stages of the collision. The measurement of photon Hanbury BrownโTwiss (HBT) correlations allows to...
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Jingyu Zhang (Vanderbilt University)23/06/2026, 19:40Poster presentation
The path toward a definitive characterization of the Quark-Gluon Plasma (QGP) requires a simultaneous, global analysis of all available jet modification data. The JETSCAPE Collaboration presents a landmark, curated dataset, the most comprehensive to date, that unifies the entirety of available jet and high transverse momentum hadron measurements from the LHC and RHIC programs into a common...
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Jinjoo Seo (Heidelberg University (DE))23/06/2026, 19:40Poster presentation
Quarkonium is a sensitive probe of the quarkโgluon plasma (QGP) created in ultra-relativistic heavy-ion collisions. In the QGP, color screening leads to the suppression of all charmonium states. However, the large charm production cross-section at LHC energies can also cause enhanced charmonium production at the phase boundary or (re-)generation throughout the QGP evolution. The interplay...
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Giyeong Kim (Inha University (KR))23/06/2026, 19:40Poster presentation
The ALICE experiment is designed to study the quark--gluon plasma (QGP) created in ultrarelativistic heavy-ion collisions. Heavy quarks, like charm and beauty, are produced in primary hard-scattering processes in the early stages of the collisions, and they experience the full space--time evolution of the system. Thus, they are unique probes to study the properties of the QGP. In addition, the...
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Jaeyoon Cho (Inha University (KR))23/06/2026, 19:40Poster presentation
Measurements of charm-hadron production provide a fundamental test of perturbative quantum chromodynamics (pQCD) calculations.
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The theoretical framework has been developed based on the QCD factorisation approach, where results from $\mathrm{e}^{+}\mathrm{e}^{-}$ or $\mathrm{e}^{-}$p collision systems were used to tune the calculations.
However, comprehensive investigations of charm-hadron... -
Changhwan Choi (Pusan National University (KR))23/06/2026, 19:40Poster presentation
The measurement of beauty-jet (b-jet) production in protonโproton (pp) collisions provides a stringent test of perturbative Quantum Chromodynamics (pQCD), owing to the large mass of the beauty quark, and serves as an essential baseline for b-jet studies in heavy-ion collisions. In particular, the excellent tracking and vertexing capabilities of the ALICE detector enable access to the low...
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Stefanie Mrozinski23/06/2026, 19:40Poster presentation
Direct photons provide a unique probe of the quarkโgluon plasma (QGP), as they are emitted throughout all stages of the collision and escape the medium without strong final-state interactions. Correlations of direct photons with low transverse momentum enable access to the spatio-temporal evolution of the emitting source via Hanbury BrownโTwiss (HBT) interferometry.
In this contribution,...
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jeongmyung kang (Sejong University)23/06/2026, 19:40Poster presentation
In relativistic heavy-ion collisions, jet quenching is a crucial phenomenon for understanding the interaction between hard-scattered partons and the hot, dense QCD medium known as the QuarkโGluon Plasma (QGP).
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Jet observables, which serve as sensitive tools to test both perturbative and non-perturbative QCD, are significantly modified in the presence of the QGP. In particular, the jet mass... -
Mr Muhammad Ibrahim Abdulhamid (Georgia State University)23/06/2026, 19:40Poster presentation
Jet substructure measurements are powerful tools for studying the fragmentation and hadronization processes in vacuum, as well as for quantifying jet quenching effects due to the quark gluon plasma in heavy ion collisions. In particular, jet mass is sensitive to virtuality of the initial hard scattering and has been used for quark- and gluon-initiated jet separation. Measurements of jet mass...
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Uttam Acharya (Vanderbilt University (US))23/06/2026, 19:40Poster presentation
Jet measurement in heavy ion collision is an important probe of Quark Gluon Plasma. Measurement of the jet nuclear modification in PbPb compared to PbPb collision can provide the insight into the jet quenching effect in Quark gluon plasma. In addition, the measurement of the jet spectra reconstructed using different distance parameter are of great interest to study the sensitivity of...
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Lucas Ferrandi (University of Mรผnster & University of Sรฃo Paulo)23/06/2026, 19:40Poster presentation
In this study, jets containing a J/$\psi$ among their constituents are identified, and ย the fragmentation function is defined as the longitudinal jet momentum fraction carried by the J/$\psi$ with respect to the jet. Measuring it provides insights into both quarkonium production and parton-shower dynamics, as well as the relation between these phenomena.
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ย ย The substantial upgrades of the... -
Emily Pottebaum (Yale University (US))23/06/2026, 19:40Poster presentation
The Lund jet plane (LJP) is an experimental observable that maps the emission pattern of a jet onto a phase space representation of QCD radiation. Selecting on specific regions of the LJP allows one to isolate perturbative and non-perturbative contributions to the multi-scale evolution of a jet, making the LJP a powerful tool for precision jet substructure measurements. The primary LJP is...
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Subhadip Pal (Czech Technical University in Prague)23/06/2026, 19:40Poster presentation
Measurements of heavy flavor production in proton-proton ($p+p$) collisions are critical for testing perturbative QCD (pQCD) calculations and serve as an essential baseline for studying nuclear matter effects in heavy-ion collisions. In this presentation, we will report on the production of $D^0$ and $D^*$ mesons in $p+p$ collisions at a center-of-mass energy of $\sqrt{s} = 510$ GeV, utilizing...
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Christopher Mc Ginn (Massachusetts Inst. of Technology (US))23/06/2026, 19:40Poster presentation
Measurements of hard probes in $e^{+}e^{-}$ collision data are essential components of parallel studies of hard probes in proton-proton and heavy-ion collisions as $e^{+}e^{-}$ collisions offer a true reference for such systems free from any hadronic initial state effects. Recently, a measurement of the two-point energy correlator using archived ALEPH e+e- data allowed the collinear and...
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Gianluca Usai (Universita e INFN, Cagliari (IT))23/06/2026, 19:40Poster presentation
The high-intensity beams from the CERN SPS, available across a wide energy range, provide a unique opportunity to explore the QCD phase diagram at high baryochemical potential $\mu_B$. The NA60+/DiCE experiment, proposed to collect data from heavy-ion collisions at the SPS starting in 2030, has strong potential to investigate this diagram via precision measurements of electromagnetic probes in...
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Isaac Long (University of Illinois Urbana-Champaign)23/06/2026, 19:40Poster presentation
Recent efforts at the Large Hadron Collider have opened up new possibilities in studying jet modification and how jets lose energy in different system sizes. From $^{208}Pb$ to $^{16}O$, we observe varying jet energy loss based on the system size. This work presents a modular energy loss treatment (MELT) [1] in the NuclearConfectionery, tuned to central $^{208}Pb$ data. In $PbPb$ collisions,...
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Matthias Kaminski23/06/2026, 19:40Poster presentation
The plasma generated in heavy ion collisions goes through different phases in its time evolution. While early times right after the collision are governed by far-from equilibrium dynamics, later times are believed to be well described by near-equilibrium dynamics. While the regimes of non-equilibrium are prohibitively complicated to describe within QCD, effective descriptions such as...
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Mayank Singh (Vanderbilt University)23/06/2026, 19:40Poster presentation
Heavy quarks are predominantly produced in the initial hard scatterings of relativistic heavy-ion collisions and therefore have direct access to the early stages of the collision event. We study the sensitivity of open heavy-flavor observables to the pre-equilibrium stage of the medium evolution in Pb+Pb collisions at $\sqrt{s_{NN}} = 5.02$ TeV. The space-time evolution of the bulk medium is...
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Sharelle Habah Yazzie (LANL)23/06/2026, 19:40Poster presentation
The LHCb experiment has pioneered a unique fixed-target program at the LHC, which has been upgraded for Run 3 with the new SMOG2 system. This device provides improved confinement of the gaseous target, resulting in a substantial increase in fixed-target luminosity. In addition, SMOG2 introduces for the first time the possibility to inject non-noble gases, thereby expanding the range of...
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Iftekhar Ahmed (University of Tennessee, Knoxville)23/06/2026, 19:40Poster presentation
The Monolithic Active Pixel Vertex Detector (MVTX) is the innermost tracking detector of the sPHENIX experiment at the Relativistic Heavy Ion Collider (RHIC) and essential for reconstructing short-lived charm and beauty hadrons. It consists of three concentric layers of detector material, utilizing the ALICE Pixel Detector (ALPIDE) ASIC. The detector covers a radial range from 2.5 cm to 4.5 cm...
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Rainer Fries (Texas A&M University)23/06/2026, 19:40Poster presentation
We have modified the X-SCAPE framework to create a Monte Carlo event generator which allows the computation of direct photon production in A+A collisions, and is well-tuned to the hadronic sector of nuclear collisions [1]. State-of-the-art rates for photon production from QGP and hadron matter have been implemented. Beyond that, our focus has been on the testing of two paradigms. One, argued...
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Arjun Srinivasan Kudinoor (Massachusetts Institute of Technology)23/06/2026, 19:40Poster presentation
Energy correlators have emerged as powerful jet substructure observables due to their ability to disentangle physics across scales, suppress soft contamination, and connect cleanly to underlying theory. While two-point correlators have received a lot of attention, higher-point correlators remain largely unexplored, in part because their evaluation is very computationally expensive in the...
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Haley Delgarito (LANL)23/06/2026, 19:40Poster presentation
In heavy-ion collisions, collective flow is thought to arise from the geometric overlap of the colliding nuclei, which generates pressure gradients within the medium. Thanks to the diverse fixed-target data samples collected by the LHCb experiment, it is possible to study the influence of nuclear geometry on final-state particle correlations by comparing targets with different shapes. This...
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Ryan James Hamilton (Yale University (US))23/06/2026, 19:40Poster presentation
Perturbative QCD calculations indicate that asymptotically free heavy quarks are less likely than lighter flavors to emit gluonic radiation at small angles, a phenomenon called the Dead Cone Effect (DCE). $D^0$-tagged jets at RHIC collider energies offer a near ideal regime to probe this effect, due to the kinematic suppression of gluon jets energetic enough to produce charm pairs--which are...
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Yu Fu (Duke university)23/06/2026, 19:40Poster presentation
Recent LHCb measurements (2410.18018) of the transverse momentum distribution of prompt $\psi$(2S) production in jets from $pp$ collision at the centre-of-mass energy of 13 TeV cannot be explained by fixed order NRQCD followed by naive PYTHIA shower. We use two different frameworks: Fragmenting Jet Functions + NRQCD and Gluon Fragmentation Improved PYTHIA to study the production of...
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Jorge Luis Dasilva Golan (Brookhaven National Laboratory)23/06/2026, 19:40Poster presentation
In this talk, I will discuss heavy-flavor probes from lattice QCD, focusing on the heavy-quark diffusion coefficient, the temperature-dependent heavy-quark (charm and bottom) masses, and the mean thermal velocity squared $\langle v^2\rangle$ of heavy-flavor degrees of freedom in the QGP.
The heavy-quark diffusion coefficient is obtained from lattice-QCD calculations inspired by Heavy Quark...
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Ms Pooja - (University of Jyvรคskylรค)23/06/2026, 19:40Poster presentation
The initial state in ultrarelativistic heavy-ion collisions is described by the Color-Glass Condensate (CGC) framework, where the collision of two colored glass sheets produces strong, coherent gluon fields known as the Glasma. The subsequent evolution of these classical colored fields is governed by the Classical Yang-Mills (CYM) equations. We study the growth of instabilities in expanding...
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Joรฃo A. Gonรงalves (LIP - IST)23/06/2026, 19:40Poster presentation
The modification of jets by interaction with the Quark Gluon Plasma has been extensively established through the comparison of observables computed for samples of jets produced in nucleus-nucleus collisions and proton-proton collisions. The presence of vacuum-like jets, jets that experienced little interaction with the Quark Gluon Plasma, in the nucleus-nucleus samples dilutes the overall...
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Mr Jorge Manuel Martรญnez Vera (Universitร di Torino & Universitat de Barcelona)23/06/2026, 19:401Poster presentation
The Open Quantum System (OQS) framework offers a method for calculating quarkonium observables during and after its propagation through a medium, under a fully quantum description. The QTRAJ code efficiently simulates the propagation of quarkonium in a medium when the latter sees quarkonium as a small color dipole $rT \ll 1$. While this limit is accurate for $\Upsilon(1S)$, its applicability...
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Rafet Kavak (Univ. Illinois at Urbana Champaign (US))23/06/2026, 19:40Poster presentation
The jet-radius dependence of the nuclear modification factor $R_{AA}$ probes how energy lost by partons in the quark-gluon plasma is redistributed in angle. Its interpretation, however, is entangled with the steeply falling jet spectrum and selection biases. This poster presents a comparative, data-driven study of radius-differential jet quenching in central (0-10%) Pb+Pb collisions at...
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Valerie Wolfe (Lehigh University)23/06/2026, 19:40Poster presentation
A photon encountering high density matter will probabilistically undergo pair production, resulting in a lepton-antilepton pair that can be detected to reconstruct the incident photon. This analysis uses proton-proton data collected by the sPHENIX detector to reconstruct conversion photons via the dielectron channel. Tracks are fitted to data collected by sPHENIXโs Time Projection Chamber...
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Xiaojun Yao (University of Washington)23/06/2026, 19:401Poster presentation
The interaction of jets with a droplet of QGP leads not only to modifications of the parton shower but also to modifications of the droplet itself, with both effects contributing to modifications of jets seen in a detector. Empirical determination of how the medium responds to the passage of a jet will add to what we know about the jet-medium interaction and will provide a unique window into...
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Gabriel Dale-Gau (Czech Technical University in Prague)23/06/2026, 19:40Poster presentation
Jet-medium interactions in heavy-ion collisions are expected to generate a characteristic hydrodynamic response consisting of a forward wake front and a backward diffusion wake. Direct observation of the depletion of soft hadrons behind the jet characteristic of the diffusion wake has proven difficult due to background and overlapping jet induced structures. Recent theory suggests that dijets...
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Belana Lubinski (Goethe University Frankfurt (DE))23/06/2026, 19:40Poster presentation
Low-mass dielectrons present an exceptional tool to deepen our understanding of the particle production in hadronic collisions. As they are produced during all stages and are unaffected by the strong interaction, they keep the information of their original production mechanism. This allows dielectrons to probe the soft regime of QCD which is often inaccessable otherwise.\
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At the Intersecting... -
Noah Koliadko23/06/2026, 19:40Poster presentation
An excellent probe for the thermalization of the QGP and its dynamics are heavy quarks, since they are created during the initial stages of the collision. If given enough time, these heavy quarks will thermalize with the QGP medium and follow its collective dynamics. The precise thermalization dynamics is hard to describe from first principles, especially at low momenta, since it is governed...
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Noah Applegate (Iowa State University)23/06/2026, 19:40Poster presentation
The sPHENIX detector at Brookhaven National Laboratoryโs Relativistic Heavy Ion Collider (RHIC) is a state-of-the-art jet and heavy flavor physics detector that includes hadronic calorimetry at mid-rapidity for the first time at RHIC. During the p+p $\sqrt{s}$ = 200 GeV run in 2024, 107 pb$^{โ1}$ of pp collisions were sampled using high $p_T$ jet triggers. The presence of the Quark Gluon...
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Mariia Mitrankova23/06/2026, 19:40Poster presentation
Foundation models are a generalized type of large language model (LLM) that are trained on large, diverse, unlabeled datasets and can perform a variety of downstream tasks. The success of LLMs in industry has motivated research into their application in scientific domains. High energy nuclear and particle physics experiments, such as sPHENIX, produce vast amounts of sparse, low-level data that...
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Cameron Dean (Massachusetts Inst. of Technology (US))23/06/2026, 19:40Poster presentation
Generative artificial intelligence (AI) has been transforming industry and science. sPHENIX, a new experiment at RHIC, has been at the cutting edge in adopting innovative generative AI to accelerate simulation, reconstruction, and analysis in a robust manner. In this talk we will highlight two recent works on diffusion-model-based, full-detector simulations of full-event heavy ion collisions...
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Benjamin Kimelman (Vanderbilt University)23/06/2026, 19:40Poster presentation
Soft particle production accompanying a hard scattering in proton-proton (p+p) collisions arises from a variety of sources, including multiple parton interactions, initial- and final-state radiation, and the color neutralization of the beam remnant. Quantifying the underlying event associated with a high energy jet provides sensitivity to these contributions and their interplay with the hard...
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Hao-Ren Jheng (Massachusetts Inst. of Technology (US))23/06/2026, 19:40Poster presentation
The sPHENIX experiment is a next-generation collider detector at RHIC that completed data taking in early 2026, collecting large data sets in 200 GeV p+p and Au+Au collisions. sPHENIX is designed to study rare jet and heavy flavor probes of the Quark-Gluon Plasma using full calorimetry and tracking. In addition to calorimeter-triggered events, a unique hybrid and 100% streaming readout scheme...
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Cesar Luiz Da Silva (Los Alamos National Laboratory (US))23/06/2026, 19:40Poster presentation
The production of strange hadrons in high-energy collisions offers valuable insight into hadronization, parton fragmentation, and nuclear effects. While strangeness enhancement has been associated to quark-gluon plasma formation in heavy-ion collisions, recent observations in small systems challenge conventional hadronization models. In this context, protonโnucleus collisions offer a valuable...
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Jiazhao Lin (Indiana University (US))23/06/2026, 19:40Poster presentation
The $\phi$ meson provides a unique probe of strange-quark dynamics in high-energy nuclear collisions. Its mass lies at the boundary between perturbative and nonperturbative QCD, making $\phi$-mseson production sensitive to both regimes. In heavy-ion collisions, $\phi$-meson production is particularly senstive to strange-quark coalescence in quark-gluon plasma. Owing to its zero net...
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Sukyung Kim (HADES)23/06/2026, 19:40Poster presentation
The High Acceptance Di-Electron Spectrometer (HADES) experiment has measured virtual photons in heavy-ion collisions as well as in protonand ion-induced reactions in the energy range of a few GeV. Thanks to the penetrating nature of electromagnetic probes, this allows to study thermal and microscopic properties of hadronic matter in the high netbaryon density and moderate temperature region...
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Abraham Thomas Holtermann (Massachusetts Inst. of Technology (US))23/06/2026, 19:40Poster presentation
Jet quenching phenomena in ultrarelativistic nucleusโnucleus collisions arise from the energy loss of high-energy partons propagating through the quarkโgluon plasma, leading to a suppression of high-$p_{\mathrm{T}}$ particle yields. While strong suppression has been observed in heavy-ion collisions, its dependence on the size of the nuclear system has not yet been systematically measured. We...
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Veronika Barbasova (Pavol Jozef Safarik University (SK))23/06/2026, 19:40Poster presentation
Resonance measurements in high-energy nuclear collisions require reliable extraction of signal yields in the presence of large combinatorial backgrounds (e.g. Event Mixing, Like-Sign). Both the background estimation technique and the invariant-mass fitting strategy can significantly influence the stability of the extracted signal and contribute to systematic uncertainties across a broad...
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Morgan Bailey Knuesel (Yale University (US))23/06/2026, 19:40Poster presentation
Jets are formed in the initial hard scattering of a collision and thus experience multiple scales of QCD processes. In proton-proton collisions, we may study how colored partons radiate and fragment using differential jet substructure, made possible by the ALICE detectorโs low-momentum reach and high-precision tracking. More specifically, by de-clustering the jet fragmentation history...
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Chathuranga Sirimanna23/06/2026, 19:40Poster presentation
Partonic interactions play a crucial role in understanding the spaceโtime evolution of the quarkโgluon plasma (QGP) formed in high-energy nuclear collisions. Early efforts to model these dynamics were pioneered by the Parton Cascade Model (PCM) [1, 2], which provided a microscopic description of -parton transport through pQCD derived hard scatterings. Since the PCM does not capture soft...
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Milan Stojanovic (Wayne State University)23/06/2026, 19:40Poster presentation
Collective effects have been observed in a variety of small collision systems; however, their physical origin remains an open question. Extending such studies to lower collision energies than those explored at the LHC is essential for discriminating among competing theoretical explanations. This work presents the first measurement of two-particle correlation functions in proton--proton...
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Xihe Han23/06/2026, 19:40Poster presentation
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Ying Shan Zhao (Shang Hai Jiao Tong University)Poster presentation
A strong classical color field, known as the glasma, is generated in the earliest stage of relativistic heavy-ion collisions and can significantly influence the momentum and spin dynamics of hard probes such as quarks and jets. Most existing studies based on the classical equations of motion in a background Yang-Mills field, such as Wong equations, may not capture the full range of effects,...
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Luobing Wang (University of Science and Technology of China (CN))Poster presentation
The nature of the high invariant mass region ($M_{K^{+}K^{-}} > 1.1~\mathrm{GeV}/c^{2}$) in coherent $K^{+}K^{-}$ photoproduction in ultra-peripheral heavy-ion collisions (UPCs) has remained an unresolved question in physics. Previous ALICE measurements have shown non-trivial structures in this region, but the underlying production mechanisms are still under debate. The relative...
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Kaifeng ShenPoster presentation
As one of the potential candidates for dark matter, the dark photon ($\rm{A}^{'}$) could act as a mediator between dark matter particles, analogous to the photon ($\gamma$) in the Standard Model. The dark photon could be detected through its kinetic mixing with the QED photon, with the strength of this coupling suppressed by a factor labeled $\epsilon$. This allows dark photons to be produced...
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