The Ⅷ-th International Conference on the Initial Stages of High-Energy Nuclear Collisions : Initial Stages 2025

7 Sept 2025, 09:00 → 12 Sept 2025, 17:00 Asia/Taipei

The 8th International Conference on the Initial Stages in High-Energy Nuclear Collisions (Initial Stages 2025) will take place in Taipei, Taiwan, from September 7 to 12, 2025.

 

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The initial Stages 2025 conference (第八屆國際高能核子對撞初始階段會議) is organized by National Central University, MIT, RIKEN, and Nara Women's University. This conference will bring together experts to discuss the latest experimental results from the Large Hadron Collider (LHC) and the Relativistic Heavy Ion Collider (RHIC). The program will cover recent advancements in theoretical tools aimed at predicting and interpreting phenomena observed in experiments and plans for future experimental facilities, including the Electron-Ion Collider (EIC) and Facility for Antiproton and Ion Research (FAIR).

 

Key topics of focus will include:

 

• Partonic structure of protons and nuclei 
• Physics at low-x and gluon saturation   
• The initial stages and nuclear structure in heavy-ion collisions 
• Collective dynamics from small to large systems 
• New theoretical techniques at large and small coupling 
• New facilities: DIS and hadronic experiments 
  
  

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Key Dates and Deadlines：

Registration and Payment Deadlines：
- Regular Registration and Payment	by July 30, 2025
- Late Registration and Payment	from July 31, 2025
- Cancellation and Reimbursement	July 31, 2025
- Final Registration	August 22, 2025
Support Application Deadlines for Early-Career Researchers：
- Support Application Deadline	July 10, 2025
- Acceptance Notification for Support	July 16, 2025
Abstract Submission Deadline：	April 27, 2025
Dates of the Conference：
- Lectures for Early-Career Researchers	September 7, 2025
- Initial Stages 2025	September 8–12, 2025

InitialStages2025_Poster.jpg

Sunday 7 September

09:00 → 09:30 Registration: IS2025 early-career researcher lectures

09:30 → 12:00 Initial Stages 2025 early-career researcher lectures

Convener: Dr Yang-Ting Chien (Georgia State University)

09:30 Initial state and early time dynamics

A general introduction to initial stages.

QA form: https://forms.gle/oY7fWBQddVQfTmso9

Speaker: Hidetoshi Taya (Keio University)

20250906HT-IS2025.pdf

20250906HT-IS2025.pptx

ECR_lectures_QAForm.pdf

QA Form

10:30 Coffee break

11:00 Partonic structure of protons and nuclei

More specific about the very first stage of IS

QA form: https://forms.gle/oY7fWBQddVQfTmso9

Speaker: Carlos Albert Salgado Lopez (Universidade de Santiago de Compostela (ES))

ECR_lectures_QAForm.pdf

IS2025_CAS.key

IS2025_CAS.pdf

QA Form

12:00 → 13:30 Lunch

13:30 → 17:00 Initial Stages 2025 early-career researcher lectures

Convener: Dr Yang-Ting Chien (Georgia State University)

13:30 Formation of the quark-gluon plasma

A more specific talk covering the processes towards QGP

QA form: https://forms.gle/oY7fWBQddVQfTmso9

Speaker: Chiho Nonaka

ECR_lectures_QAForm.pdf

IS2025_nonaka.pdf

QA Form

14:30 Coffee break

15:00 PDFs and initial stages in the EIC era

A more general, summary talk with the synergy towards EIC science

QA form: https://forms.gle/oY7fWBQddVQfTmso9

Speaker: Wen-Chen Chang (Academia Sinica (TW))

20250630_TIDC_SummerSchool_wchang.pdf

ECR_lectures_QAForm.pdf

QA Form

16:00 Coffee break

16:10 Recitation

QA form: https://forms.gle/oY7fWBQddVQfTmso9

Speakers: Carlos Albert Salgado Lopez (Universidade de Santiago de Compostela (ES)), Chiho Nonaka, Hidetoshi Taya (Keio University), Wen-Chen Chang (Academia Sinica (TW)), Dr Yang-Ting Chien (Georgia State University)

ECR_lectures_QAForm.pdf

QA Form

Monday 8 September

08:20 → 09:00 Registration: Initial Stages 2025

09:00 → 10:30 Plenary session: 1

Convener: John Lajoie (Oak Ridge National Laboratory)

09:00 Opening of Initial Stages 2025

Opening of Initial Stages 2025

Speaker: Chia-Ming Kuo (National Central University (TW))

20250908_IS2025.pdf

09:10 ALICE Highlights

ALICE overview on soft probes

Speaker: Sushanta Tripathy (Lund University (SE))

ALICEHighlights_IS_08092025.pdf

09:35 ALICE results with small systems and light ions

ALICE overview on hard probes

Speaker: Jan Fiete Grosse-Oetringhaus (CERN)

JFGO8p.pdf

10:00 Overview of the ATLAS experiment at LHC

Overview of the ATLAS experiment at LHC.

Speaker: Brian Andrew Cole (Columbia University (US))

ATLAS_Overview_IS2025_v8.pdf

10:30 → 11:00 Coffee break

11:00 → 12:30 Plenary session: 2

Convener: Anne Marie Sickles (Univ. Illinois at Urbana Champaign (US))

11:00 Overview of the CMS experiment at LHC

This talk will present an overview of the CMS experiment at the LHC.

Speaker: Dr Gian Michele Innocenti (Massachusetts Inst. of Technology (US))

Innocenti_IS2025_CMSOverviewFinal.pdf

11:30 Overview of the LHCb experiment at LHC

This will be an experimental overview of the LHCb at LHC.

Speaker: Saverio Mariani (CERN)

Mariani_IS2025-4.pdf

12:00 Overview of the STAR experiment at RHIC

This is an overview of the STAR experiment at RHIC.

Speaker: Andrew Tamis (Yale University)

InitialStages_STARSummary_Tamis_v9.pdf

12:30 → 14:00 Lunch

14:00 → 15:30 Plenary session: 3

Convener: You Zhou (Niels Bohr Institute (DK))

14:00 Overview of PHENIX experiment at RHIC

The Relativistic Heavy Ion Collider (RHIC) has been in operation since 2001, contributing significantly to the study of strong interactions and nuclear matter under extreme conditions. The PHENIX experiment, operated from 2001 to 2016, has collected a comprehensive dataset that continues to yield impactful results in initial stages of nucleus collisions. These measurements have provided critical insights into the properties of the quark-gluon plasma (QGP), cold nuclear matter (CNM) effects also in small collision systems, and the structure and dynamics of quarks and gluons within polarized protons. And there have been systematic measurements of the EM probes (direct photons), Jets (or high pT hadrons), and heavy flavor probes. The direct photon yields showed interesting dN/dy dependence from the small systems to the large systems. The identified particle productions would shed light on particle production in both soft and hard sectors, which would cross-check and understand results primarily coming from hard and EM processes.
In this presentation, identified charged-hadron invariant pT and mT spectra, nuclear-modification factors and particle ratios, in p + Al, 3He +Au, and Cu + Au collisions at sqrt(s_NN) = 200 GeV and in U+U collisions at sqrt(s_NN) = 193 GeV measured by PHENIX are shown. And the physics interpretations including collective flow aspects for those measurement are presented. The values of freeze-out temperatures and average collective velocities have been obtained. It should also be noted that v2 flow values and pi0 productions in those various collision systems, have been measured by the PHENIX. These findings highlight the ongoing contributions of PHENIX experiment at RHIC to advancing our understanding of strong interactions and the nuclear matter.

Speaker: Susumu Sato

0908_2025_InitialStage_Phenix_v021.pdf

14:30 Overview of the sPHENIX experiment at RHIC

This is an overview of the sPHENIX experiment at RHIC.

Speaker: Blair Daniel Seidlitz (Columbia University (US))

sPHENIX_BSeidlitz_IS25.pdf

15:00 Many-body fragmentation of the initial state

Speakers: Christian Bierlich, Christian Bierlich (Lund University (SE))

CBierlich-is2025.pdf

15:30 → 16:00 Coffee break

16:00 → 17:30 Plenary session: 4

Convener: Dr Yang-Ting Chien (Georgia State University)

16:00 Recent Development in Initial State Modeling and challenges in incoorportating higher-order QCD corrections

Speaker: Oscar Garcia-Montero (Universität Bielefeld)

IS2025_OG-M.pdf

16:25 What constraints do experimental data impose on Monte Carlo models of the initial state?

Speaker: Katarina Krizkova Gajdosova (Czech Technical University in Prague (CZ))

IS2025_KKG_final.pdf

16:50 Physics Insights into the Initial State from Global Bayesian Analyses

Speaker: Prof. Matthew William Luzum (University of São Paulo)

LuzumIS.pdf

17:10 Bayesian Constraints on Initial-State Models in the Earliest Stages of the Collision

Speaker: Xiang-Yu Wu (McGill University)

IS2025_xyw_v6.pdf

18:00 → 21:00 Reception

19:00 → 20:00 IAC meeting

19:00 → 21:00 Poster presentations

19:00 Investigating non-perturbative QCD mechanisms in pp collisions via forward-backward correlations

Speaker: Mr Rohit Agarwala (Bodoland University)

IS2025_poster_rohit_agarwala.pdf

19:01 Real-Time Detection of QGP Signatures in the CBM Experiment using Convolutional Neural Networks

Speakers: Prof. Ivan Kisel (Johann-Wolfgang-Goethe Univ. (DE)), Ivan Kisel (GSI - Helmholtzzentrum fur Schwerionenforschung GmbH (DE))

Real_Time_Detection_of_QGP_Signatures_poster_v2.pdf

19:02 First jet results from the ATLAS Oxygen-Oxygen program

Speaker: Matthew Caleb Hoppesch (University of Illinois at Urbana-Champaign)

IS2025_Poster_Hoppesch.pdf

19:03 Enhancing Experimental Plot Retrieval with Large Language Models

Speaker: Fish Yu (Institute for Information Industry)

Enhancing-Experimental-Plot-Retrieval-with-Large-Language-Models.png

IS2025 Document Chatbot (Access Account: PDFis2025)

19:04 Lattice computation of the Collins-Soper kernel using complex directional Wilson lines

Speaker: Wayne Morris (National Yang Ming Chiao Tung University)

is2025poster.pdf

19:05 ART25: global extraction of unpolarised TMD distributions

Speaker: Valentin Moos (NYCU)

VMoosPoster_V0.pdf

19:06 Direct calculation of Parton Distribution Functions in Minkowski space

Speaker: Manuel Schneider (NYCU)

ManuelSchneider_DirectCalculationOfPartonicFunctionsInMinkowskiSpace.pdf

19:07 Search for the Chiral Magnetic Effect by Event Shape Engineering Differentially in Invariant Mass in Au+Au Collisions at √s_NN = 200 GeV from STAR

Speaker: Han-Sheng Li

IS_poster_han_sheng_li_v3_0.pdf

19:08 Dimuon production in DIS with charm-mass effects

Speaker: Sami Yrjänheikki (University of Jyväskylä)

initial_stages_2025_poster_yrjanheikki.pdf

19:09 Matching the dipole picture with collinear factorization

Speaker: Magnus Bertilsson

IS25_Poster-8.pdf

19:10 Thermoelectric-induced electric field in magnetized and evolving quark-gluon plasma

Speaker: Kamaljeet Singh (Indian Institute of Technology Indore (IN))

POSTER_Initial_stages_2025.pdf

19:11 Hadronic scattering effects on Λ polarization in relativistic heavy ion collisions

Speaker: HAESOM Sung

IS2025.pdf

19:12 Impact of α-clustered nuclear density profiles on medium anisotropy in p-O and p-C collisions at the LHC

Speaker: Aswathy Menon K R (Indian Institute of Technology Indore (IN))

IS2025-Poster-AswathyMenon.pdf

19:13 Nuclear deformation in high-energy heavy-ion collisions using Bayesian analysis

Speaker: Eri Miyoshi (Hiroshima Univ.)

intial_stage_miyoshi_v2.pdf

19:14 Application of (3+1)D Glasma Simulation to Au-Au Collisions at √s_NN= 200$ GeV: Eccentricity, and Angular Momentum

Speaker: Dr Hidefumi Matsuda (Zhejiang University)

IS2025_HM.pdf

19:15 Extending the fluid-dynamic description to the initial state

Speaker: Andreas Kirchner

IS_2025_poster.pdf

19:16 Recovery of malfunctioning data transfer of readout in sPHENIX-INTT detector

Speaker: TOMOKI HARADA

sPHENIX_IS25_Poster_Tomoki.pdf

19:17 sPHENIX measurement of underlying event production in p+p collisions at 200 GeV

Speaker: Emma McLaughlin

sPHENIX_IS25_Emma_final.pdf

19:18 Performance of sPHENIX Intermediate silicon tracker

Speaker: Ryotaro Koike (Kyoto Universuty)

sPHENIX_IS25_Poster_PerformanceOfsphenixIntt_RyotaroKoike.pdf

19:19 Studies of long-range two-particle correlations in proton-proton collisions with sPHENIX

Speaker: Yuko Sekiguchi (RIKEN)

sPHENIX_IS25_Poster_Yuko_v7.pdf

19:20 Measurements of the proton-to-pion production ratio as a function of the distance from the jet axis in pp collisions at √s = 13.6 TeV and Pb--Pb collisions at √s_NN = 5.36 TeV with ALICE

Speaker: Yuto Nishida (University of Tsukuba (JP))

IS2025poster_nishida_final.pdf

19:21 Measurements of electro weak-boson production via electrons in pp collisions at √s= 13.6 TeV with ALICE

Speaker: Subaru Ito (University of Tsukuba (JP))

InitialStagesPosterSubaruIto-07.pdf

19:22 Detectors calibration for spin physics analysis of sPHENIX experiment

Speaker: TAKAHIRO KIKUCHI (Rikkyo university)

sPHENIX_IS25_Poster_Template_print.pdf

19:23 Diffusion of Charm Quarks and the Search of QCD Critical Point

Speaker: Kangkan Goswami (Indian Institute of Technology Indore)

IS 2025.pdf

19:24 Exploring strangeness enhancement feature in proton-proton collisions at the LHC with event shape classifiers

Speaker: Raghunath Sahoo (Indian Institute of Technology Indore (IN))

StrangenessvsEventShape-IS2025.pdf

19:25 Spin-alignment of quarkonia in a thermal rotating medium

Speaker: Bhagyarathi Sahoo (Indian Institute of Technology Indore (IN))

IS2025-Bhagyarathi.pdf

19:26 Towards a systematic characterization of the dynamics of heavy quarks in quark-gluon plasma

Speakers: Bruno Scheihing (KITP, University of California, Santa Barbara), Bruno Sebastian Scheihing Hitschfeld (Massachusetts Inst. of Technology (US)), Bruno Sebastian Scheihing Hitschfeld (Massachusetts Institute of Technology)

Initial_Stages_2025_Poster-2.pdf

19:27 Decoding nuclei production mechanism at the LHC through deuteron-nucleon correlation studies

Speaker: Sushanta Tripathy (Lund University (SE))

NucleiBalance_IS_Sushanta_v1.pdf

Tuesday 9 September

08:20 → 09:00 Registration: Initial Stages 2025

09:00 → 10:30 Plenary session: 5

Convener: Mr Po-Ju Lin (National Central University (TW))

09:00 Status of the global analysis of nuclear PDF and future experimental priorities

Speaker: Aleksander Kusina

kusina_InitialStages2025.pdf

09:30 New constraints on nuclear structure and their interplay with final-state effects

Speaker: Cristian Baldenegro (Massachusetts Inst. of Technology (US))

InitialStages2025Cristian_v5.pdf

10:00 Calculations of transport coefficients

Speaker: Ms Isabella Danhoni

initial_stages.key

initial_stages.pdf

10:30 → 11:00 Coffe break

11:00 → 12:30 Plenary session: 6

Convener: Yuji Goto (RIKEN (JP))

11:00 How do we obtain definitive evidence of gluon saturation and the CGC?

Speaker: Dr Heikki Mäntysaari (University of Jyväskylä)

IS2025_plenary_evidence_of_CGC-5.pdf

11:20 What is the role of color coherence and gluon saturation effects in Monte Carlo simulations of small and large collision systems?

Speaker: Peter Christiansen (Lund University (SE))

christiansen_monte_carlo_animated.pdf

11:40 Initial-State-Driven Spin and Polarization Effects

Speaker: Di-Lun Yang (Institute of Physics, Academia Sinica)

IS2025_DLYang_v2.pdf

12:00 Status of global and toroidal vorticity studies

Speakers: Mike Lisa (Ohio State University (US)), Mike Lisa (Ohio State University (US))

Lisa-InitialStages.pptx

12:30 → 14:00 Lunch

14:00 → 16:00 Parallel session: 1

Convener: Prabhat Ranjan Pujahari (Indian Institute of Technology Madras (IN))

14:00 Charged particle production at mid and forward rapidities from small to large collision systems with ALICE

Speaker: Marta Urioni (Universita e INFN Trieste (IT))

IS_mult_v3.pdf

14:20 sPHENIX measurements of bulk properties of Au+Au collisions

Speaker: Cheng-Wei Shih (National Central University)

IS2025_Bulk_CW_v4_1.pdf

14:40 Reconstructed Jets and Jet Substructure in 200 GeV p+p/p+Au/d+Au Collisions with PHENIX

Speaker: John Lajoie (Oak Ridge National Laboratory)

Jets and Jet Substructure in 200 GeV p+p, p+Au, d+Au Collisions with PHENIX rev4.pdf

Jets and Jet Substructure in 200 GeV p+p, p+Au, d+Au Collisions with PHENIX rev4.pptx

15:00 sPHENIX measurements of jet and isolated photon production in p+p collisions at RHIC

Speakers: Daniel Lis, Daniel Lis

is2025_DanielLis_v4.pdf

15:20 Probing the initial state with dijets in pPb collisions at 8.16 TeV with CMS

Speaker: Vipul Pant (University of Illinois Chicago (US))

IS2025_talk.pdf

15:40 Jet and heavy-flavor jet production in ultraperipheral proton-proton and PbPb collisions with CMS and TOTEM

Speaker: Jordan Lang (Massachusetts Institute of Technology)

InitialStages2025_CMS_JordanLang_PhotonuclearAndHardDiffraction.pdf

InitialStages2025_CMS_JordanLang_PhotonuclearAndHardDiffraction_v2.pdf

14:00 → 16:00 Parallel session: 2

Convener: Clemens Werthmann (Ghent University)

14:00 The Imprint of Preequilibrium in Jet Flow and Suppression

Speaker: Adam Takacs (Heidelberg University)

AdamTakacs_IS2025.pdf

14:20 Universal behaviour in 3+1D Full Relativistic Boltzmann in terms of Knudsen number and opacity

Speaker: Vincenzo Nugara

Nugara_is25_new.pdf

14:40 Studying Collectivity in High-Multiplicity Proton-Proton Collisions with Viscous Anisotropic Hydrodynamics

Speaker: Shujun Zhao

IS25VAH.pdf

15:00 Rapidity-dependent QGP equilibration in QCD kinetic theory

Speaker: Luyao Fabian Zhou (ITP Heidelberg)

Fabian_Zhou_IS25_v2.pdf

15:20 Anisotropic flow in small collision systems from a hybrid approach

Speaker: Lucas Constantin

Lucas_Constantin_IS25_NEW_VERSION.pdf

Lucas_Constantin_IS25.pdf

15:40 Beyond Hydrodynamics: Modeling Early-Time Dynamics and Collective Flow in Small Systems with CoMBolt-ITA

Speaker: Seyed Farid Taghavi (Technische Universitaet Muenchen (DE))

IS2025-Taghavi_01.pdf

14:00 → 16:00 Parallel session: 3

Convener: Aleksander Kusina

14:00 Parton structures in deep inelastic scattering with quantum computing

Speaker: Wenyang Qian (University of Santiago de Compostela)

Qian_IS2025.pdf

14:20 Signals for fluctuating constituent numbers in small systems

Speaker: Andreas Kirchner

Taipeh_IS_talk_Andreas_Kirchner.pdf

14:40 New parton distributions of the real photon.

Speaker: Madhav Chithirasreemadam

IS2025_madhav.pdf

15:00 Rapid adiabatic hydrodynamization and a generalized picture of attractors in kinetic theory

Speaker: Rachel Steinhorst (Massachusetts Institute of Technology)

Initial_Stages_2025.pdf

15:20 Yoctosecond imaging of the shape of Xe-129 at the Large Hadron Collider

Speaker: Govert Hugo Nijs (CERN)

is2025.pdf

15:40 (3+1)D event-by-event pre-equilibrium dynamics in heavy-ion collisions

Speaker: Dr Jie Zhu (Bielefeld University)

KoMPoST_3D_Jie.pdf

16:00 → 16:30 Coffee break

16:30 → 18:10 Parallel session: 4

Convener: Cameron Dean (Massachusetts Inst. of Technology (US))

16:30 J/ψ polarization measurement with ALICE at the LHC energies

Speaker: Bhagyarathi Sahoo (Indian Institute of Technology Indore (IN))

IS2025-Bhagyarathi.pdf

16:50 Upsilon production and polarization measurements in pp collisions with ALICE

Speaker: Kshitish Kumar Pradhan (IIT Indore)

Kshitish-IS2025.pdf

17:10 Associated production of charm mesons in pp collisions with ALICE

Speaker: Andrea Tavira (Université Paris-Saclay (FR))

AndreaTaviraGarcia_InitialStages_v3.pdf

17:30 sPHENIX measurement of open-charm baryon-to-meson ratios in p+p collisions at RHIC

Speaker: Michael Joseph Peters (Massachusetts Inst. of Technology (US))

Peters_HF_IS2025.pdf

17:50 Fraction of B-meson decays in J/ψ yields in p+p Collisions at √s = 200 GeV measured by the PHENIX detector at RHIC

Speaker: Rachid Nouicer

PHENIX_IS2025_Rachid_Nouicer_F.pdf

PHENIX_IS2025_Rachid_Nouicer_F.pptx

16:30 → 18:10 Parallel session: 5

Convener: Kenta Shigaki (Hiroshima University (JP))

16:30 Measurements of J/Ψ and impact of coincident photon induced processes in ultra-peripheral Pb+Pb collisions at TeV with the ATLAS detector

Speaker: Peter Alan Steinberg (Brookhaven National Laboratory (US))

Steinberg_IS2025_v3b.pdf

16:50 Exploring the dense gluonic matter via charmonium and bottomonium photoproduction in Ultra Peripheral Collisions at CMS

Speaker: Yu-Chen (Janice) Chen (Massachusetts Institute of Technology)

IS2025_CMSQuarkonia_JaniceChen_v4.pdf

17:10 Probing gluonic matter with photoproduction of vector mesons in ultraperipheral collisions at CMS

Speaker: Ms Pranjal Verma (Indian Institute of Technology Madras (IN))

IS_VM_Slides.pdf

17:30 Study of Entanglement Enabled Spin Interference in peripheral Au+Au collisions with coherently photoproduced mesons in the STAR experiment

Speaker: Dr Leszek Krzysztof Kosarzewski (Ohio State University)

IS2025_EESI_hadr_LK_2025.9.9_v4.pdf

17:50 Investigating Entanglement Enabled Spin Interference in photonuclear ρ0→π+π- and γγ→π+π- in Au+Au collisions at STAR

Speaker: Samuel Corey (Ohio State University)

IS_HLbyL_final.pdf

16:30 → 18:10 Parallel session: 6

Convener: Dr Heikki Mäntysaari (University of Jyväskylä)

16:30 Glasma Role in Jet Quenching Effects

Speaker: Pablo Guerrero Rodríguez (Instituto Galego de Física de Altas Enerxías (IGFAE))

PGuerrero_IS2025.pdf

16:50 Entanglement-Driven Correlations: A New Window into Early-Time QCD Dynamics

Speaker: James Daniel Brandenburg (Ohio State University (US))

IS_2025_jdb_clean.pdf

17:10 From JIMWLK to CSS

Speaker: Prof. Michael Lublinsky

talk_Taipei.pdf

17:30 Exploring the nuclear structure at the TeV energy scale using reverse engineering

Speaker: You Zhou (Niels Bohr Institute (DK))

YouZhou_IS2025.pdf

17:50 Small systems with JEWEL and Trajectum

Speaker: Isobel Kolbe (University of the Witwatersrand (ZA))

Small systems with JEWEL and Trajectum

Small systems with JEWEL and Trajectum

Wednesday 10 September

08:30 → 09:00 Registration: Initial Stages 2025

09:00 → 10:40 Parallel session: 7

Convener: Raghunath Sahoo (Indian Institute of Technology Indore (IN))

09:00 Experimental discovery of the nuclear shape phase transition and nuclear structure on ultrashort timescales at the LHC with ALICE

Speaker: Maxim Virta (University of Jyväskylä)

IS2025_slides_MV.pdf

09:20 Probing Nuclear Structure and Parton Dynamics Using Jets with ATLAS

Speaker: Matthew Caleb Hoppesch (University of Illinois at Urbana-Champaign)

IS2025_Talk_Hoppesch.pdf

09:40 Top-Quark and Jet Probes of nPDFs with the ATLAS Experiment

Speaker: Benjamin Jacob Gilbert (Lawrence Livermore Nat. Laboratory (US))

Slides_IS25_nPDF_UpcJets_TopQ.pdf

10:00 Investigating nuclear shape effects in the Breit-Wheeler process through U+U UPCs at STAR

Speaker: Nicholas Jindal (Ohio State University (US))

njindal_IS2025_v_inf.pdf

10:20 Measurement of the Hard Exclusive π0 Muoproduction at COMPASS

Speaker: Mr Po-Ju Lin (National Central University (TW))

2025_InitialStages_pjlin.pdf

09:00 → 10:40 Parallel session: 8

Convener: Yuko Sekiguchi (RIKEN)

09:00 Recent flow and correlation measurements in large and small collision systems with ATLAS

Speakers: Somadutta Bhatta (Tata Inst. of Fundamental Research (IN)), Somadutta Bhatta (Stony Brook University (US))

IS2025_Somadutta_v2.pdf

09:20 QCD collectivity and searching for strangeness enhancement in photonuclear collisions and high-multiplicity jets at CMS

Speaker: Prabhat Ranjan Pujahari (Indian Institute of Technology Madras (IN))

PRP-IS2025.pdf

09:40 Probing collectivity with multiparticle and charge-dependent correlations in small systems at CMS

Speaker: Rohit Kumar Singh (Indian Institute of Technology Madras (IN))

Initial Stages 2025 final.pdf

10:00 Probing the Neutron-Skin Effect with Charged--Hadron Ratios in Pb--Pb Collisions at √sNN = 5.36 TeV with ALICE

Speaker: Bong-Hwi Lim (University of Tokyo (JP))

20250901_IS2025_NeutroSkin_BHLim.pdf

10:20 Studies of the nuclear initial state and early EM fields in PbPb with measurements of top quark pair production and Z boson dimuon decays at CMS

Speaker: Andre Govinda Stahl (CERN)

Initial Stages 2025.pdf

09:00 → 10:40 Parallel session: 9

Convener: Di-Lun Yang (Institute of Physics, Academia Sinica)

09:00 Next-to-leading order dilepton production from the pre-equilibrium

Speaker: Mika Spier

MikaSpierInitialStages.pdf

09:20 Quantum Evolution and Gluon Emission of Dressed Quarks in a SU(3) Colored Background

Speaker: Meijian Li (University of Santiago de Compostela)

IS2025_MeijianLi.pdf

09:40 Thermalization in $\phi^4$ theory via quantum computing

Speaker: Iván Cuntín Broullón (IGFAE)

CuntinBroullonIvan_IS25Talk2.pdf

CuntinBroullonIvan_IS25Talk.pptx

10:00 Nonperturbative particle production and evolution in the dynamic Glasma

Speaker: Nicholas Benoit (Hiroshima University)

IS2025_Benoit.pdf

10:20 Observation of Universal Expansion Anisotropy from Cold Atoms to Hot Quark-Gluon Plasma

Speaker: Fuqiang Wang (Purdue University (US))

fqwang_IS2025.pdf

10:40 → 11:10 Coffee break

11:10 → 12:30 Parallel session: 10

Convener: Yi Chen (Vanderbilt University (US))

11:10 The first measurement of two-particle correlation function with W-boson-pair events using archived ALEPH data at 183-209 GeV

Speaker: Tzu-An Sheng (Massachusetts Inst. of Technology (US))

is2025_tzuan_sheng.pdf

11:30 Quantifying the role of strangeness in baryon production mechanisms through angular correlations in pp collisions at 13.6 TeV with ALICE

Speaker: Shirajum Monira (Warsaw University of Technology (PL))

IS2025_angular_correlations_of_strange_baryons_monira.pdf

11:50 Probing strangeness enhancement in proton-proton collisions using rapidity correlations among a ϕ meson and a strange hadron with ALICE

Speaker: Stefano Cannito (Universita e INFN Trieste (IT))

IS2025_SCannito.pdf

12:10 Femtoscopic correlations between heavy and light flavor hadrons in heavy-ion collisions by STAR

Speaker: Yi Yang (Academia Sinica (TW))

IS_2025_Priyanka_final.pdf

11:10 → 12:30 Parallel session: 11

Convener: Satoshi Yano (Hiroshima University (JP))

11:10 SMOG: a high-density gas target at the LHCb experiment

Speaker: Chiara Lucarelli (CERN)

IS25.pdf

11:30 FoCal - ALICE forward calorimeter upgrade

Speaker: Takashi Hachiya (Nara Women's University (JP))

IS2025_FOCAL_hachiya_v5.pdf

IS2025_FOCAL_hachiya_v5.pptx

11:50 Measurement of pion structure with Sullivan process and ePIC ZDC ECal development

Speaker: Chia-Yu Hsieh (Academia Sinica (TW))

20250911_intialStage_SullivanProcessAndZDC_17mins.pdf

12:10 Target jet substructure

Speaker: Meng-Hsiu Kuo

InitialStates2025.pdf

11:10 → 12:30 Parallel session: 12

Convener: Dana Avramescu (University of Jyväskylä)

11:10 Initial stage jet momentum broadening in a Light-Front Hamiltonian approach

Speaker: Carlos Lamas (IGFAE-USC)

Slides_IS.pdf

11:30 Tracing early time dynamics through high energy probes

Speaker: Dr Souvik Priyam Adhya (Institute of Physics of the Czech Academy of Sciences)

IS_25_souvikadhya.pdf

11:50 Equilibration and Hydrodynamic Onset in Small and Large Systems.

Speaker: Cendikia Abdi (Hiroshima University)

Initial Stages 2025 Abdi.pdf

12:10 Inferring the initial condition for the BK evolution at next-to-leading order accuracy

Speaker: Carlisle Aurabelle Casuga

casuga_is2025.pdf

12:30 → 18:00 Excursion

Thursday 11 September

08:30 → 09:00 Registration: Initial Stages 2025

09:00 → 10:30 Plenary session: 7

Convener: Dr Maya Shimomura (Nara Women's University (JP))

09:00 How does low energy nuclear structure influence initial conditions in high-energy heavy-ion collisions?

Speaker: Christopher Plumberg (Pepperdine University)

Plumberg_IS2025.pptx

09:20 Imaging Shapes of Atomic Nuclei in Heavy-ion Collisions and effect of sub-nucleonic fluctuations: what can we learn uniquely from HIC?

Speaker: Dr Wilke Van Der Schee (CERN)

Talk_Taipei25final.pdf

Talk_Taipei25final.pptx

09:40 New developments in direct constraints of the speed of sound and equation of state in HIC

Speaker: Gabriel Soares Rocha (Vanderbilt University)

IS2025-Gabriel_Soares_Rocha-v3.pdf

IS2025-Gabriel_Soares_Rocha-v3.pptx

10:05 Predictions and interpretation for O-O and p-O collisions and other small collision systems

Speakers: Aleksas Mazeliauskas, Dr Aleksas Mazeliauskas (Heidelberg University (DE))

Mazeliauskas_IS2025_update.pdf

10:30 → 11:00 Coffee break

11:00 → 11:30 Plenary session: 8

Convener: Dieter Roehrich (University of Bergen (NO))

11:00 What have we learned from the light ion program at RHIC and LHC?

Speaker: Giacomo Graziani (INFN, Sezione di Firenze (IT))

graziani_LightIons_IS_v2.pdf

11:30 → 12:30 New results with light ions

Convener: Dieter Roehrich (University of Bergen (NO))

11:30 Nuclear modification of π0 production in O-O collisions with ALICE

Speaker: Nicolas Strangmann (Goethe University Frankfurt (DE))

Pi0ROO_IS_Strangmann.pdf

11:50 Revealing the Bowling-Pin Geometry of Ne via O+O and Ne+Ne Collisions with ATLAS

Speaker: Aman Dimri (Stony Brook University (US))

IS_2025_Final.pdf

12:10 Characterizing initial and final state effects in O-O collisions at CMS

Speaker: Austin Alan Baty (University of Illinois Chicago)

Baty_InitialStages_OONeNe_v6.pdf

12:30 → 14:00 Lunch

14:00 → 15:30 Plenary session: 9

Convener: Carlos Albert Salgado Lopez (Universidade de Santiago de Compostela (ES))

14:00 Emergence of hydrodynamic behavior in far-from-equilibrium strongly interacting systems

Speaker: Clemens Werthmann (Ghent University)

IS25_Werthmann.pdf

14:30 Thermalization at Weak and Strong Coupling: Status and recent developments

Speakers: Bruno Sebastian Scheihing Hitschfeld (Massachusetts Institute of Technology), Bruno Sebastian Scheihing Hitschfeld (Massachusetts Inst. of Technology (US))

Talk-IS-v4-NEW.pdf

15:00 Pre-Equilibrium and Early-Time Jet Momentum Broadening and HQ diffusion

Speaker: Dana Avramescu (University of Jyväskylä)

da_is25.pdf

15:30 → 16:00 Coffee break

16:00 → 17:10 Plenary session: 10

Convener: Olga Evdokimov (University of Illinois Chicago (US))

16:00 Can we disentangle collectivity-like signals by separating few-scattering effects from QGP formation?

Speaker: Eero Aleksi Kurkela (University of Stavanger (NO))

Kurkela-IS-2025.pdf

16:25 What have we learned about the minimal condition for flow-like signal from ee to AA collisions?

Speaker: Yi Chen (Vanderbilt University (US))

20250911_FlowSmallSystem_IS2025_YiChen_v16.pdf

16:50 Theoretical overview of jet quenching and heavy quark diffusion signal in small systems

Speaker: Dr Andrey Sadofyev (LIP, Lisbon)

IS2025_AS.pdf

IS2025_AS.pptx

17:10 → 18:10 Panel discussion: On the Theoretical and Experimental Validity of the CGC–Glasma–Kinetic–Hydrodynamic Framework: Challenges and Perspectives

Speakers: Joao Lourenco Henriques Barata, Wei Li (Rice University (US))

25_IS.pdf

19:00 → 22:00 Banquet

The banquet hall on the 5th floor of the Humble House Taipei

Friday 12 September

09:00 → 10:30 Plenary session: 11

Convener: Peter Alan Steinberg (Brookhaven National Laboratory (US))

09:00 How can future experiments at EIC and LHC help resolve open questions in UPC physics? (How does the UPC help with EIC program)

Speaker: Kazuhiro Watanabe (Tohoku University)

IS2025_Watanabe.pdf

09:30 What have UPCs taught us about small-x, saturation physics and initial conditions of heavy-ion collisions?

Speaker: Wenbin Zhao (Wayne State University)

Wenbin_Zhao_IS2025.pdf

10:00 Experimental measurements in UPCs and constraints on the initial stages

Speaker: Sruthy Jyothi Das (University of Illinois Chicago (US))

sjdas_20250912_IS2025.pdf

10:30 → 11:00 Coffee break

11:00 → 12:30 Plenary session: 12

Convener: Sasha Milov

11:00 What can we learn from jet measurements in small and large systems for the initial stages

Speaker: Anne Marie Sickles (Univ. Illinois at Urbana Champaign (US))

sickles_091225.pdf

11:30 What can we learn from heavy flavor measurements in small and large systems for the initial stages

Speaker: Cameron Dean (Massachusetts Inst. of Technology (US))

HF_what_can_we_learn_CDean_20250912.pdf

12:00 Emergent many-body dynamics at its limits: from ultracold atoms to high-energy collisions

Speaker: Giuliano Giacalone

Giacalone_IS25.pdf

12:30 → 14:00 Lunch

14:00 → 15:30 Plenary session: 13

Convener: Taku Gunji (University of Tokyo (JP))

14:00 LHC future projects: LHeC and LHCspin

Speaker: Pasquale Di Nezza (INFN e Laboratori Nazionali di Frascati (IT))

LHeC LHCspin IS2025.pdf

14:30 Status of EIC and EIF, and what they can teach us about the initial stages of heavy ion collisions

Speaker: Olga Evdokimov (University of Illinois Chicago (US))

2025_IS_Evdokimov - final.pdf

15:00 Overview of the ePIC experiment at EIC

This is an overview of the ePIC experiment at EIC.

Speaker: Carlos MUNOZ CAMACHO

IS2025.pdf

15:30 → 16:00 Coffee break

16:00 → 17:00 Plenary session: 14

Convener: Itaru Nakagawa (RIKEN)

16:00 Direct calculation of Partonic Functions in Minkowski space

Speaker: Manuel Schneider (NYCU)

ManuelSchneider_flashTalk_initialStages2025.pdf

16:10 sPHENIX measurement of underlying event production in p+p collisions at 200 GeV

Speaker: Emma McLaughlin

IS25_flashtalk_Emma.pdf

16:20 Dynamics of Heavy Quarks in Quark-Gluon Plasma towards a systematic characterization

Speaker: Bruno Scheihing (KITP, University of California, Santa Barbara)

flashTalk-Bruno_Scheihing.pdf

16:30 Remarks on the initial stages

Speaker: Carlos Albert Salgado Lopez (Universidade de Santiago de Compostela (ES))

IS2025_Remarks.pdf

16:40 Next Initial Stages

Speaker: Dr Heikki Mäntysaari (University of Jyväskylä)

IS27_presentation.pdf

16:50 Closing

Speaker: Chia-Ming Kuo (National Central University (TW))