IV Hot QCD Matter Conference 2026

Contribution List

11. $K^{*0}$ meson production using a multiphase transport model at RHIC BES energies

Mr Pranjal Barik (Indian Institute of Science Education and Research (IISER) Berhampur)

Collectivity and Bulk Dynamics from Small to Large Collision Systems

Poster Presentation

Short-lived resonances such as the $K^{*0}$ provide a sensitive probe of the evolution of the medium created in relativistic heavy-ion collisions, owing to their decay, rescattering, and regeneration during the hadronic phase. In this work, we investigate the production and collective flow of $K^{*0}$ mesons in Au+Au collisions at $\sqrt{s_{\mathrm{NN}}}=19.6$, 14.5, and 7.7 GeV using a...

57. A lattice study of spin interactions between heavy quarks in the quark gluon plasma

Swagatam Tah (The Institute of Mathematical Sciences)

Heavy Flavor and Quarkonia

Oral Presentation

I will talk about the extraction of the spin-dependent relativistic correction to the non-perturbative potential between a heavy quark-antiquark pair in the quark gluon plasma using lattice techniques. We first analytically derive the spin-dependent potential in terms of Wilson-line correlators with color-magnetic field insertions and show that it contains an imaginary part in the hard-thermal...

47. An Information-Theoretic Search for the QCD Critical Point Using Net-Proton Fluctuations

Dr Nirbhay Kumar Behera (Central University of Tamil Nadu)

QCD phase diagram, Lattice QCD, and Neutron Stars

Poster Presentation

Searching for the Quantum Chromodynamics (QCD) critical point remains a major objective of relativistic heavy-ion collision experiments. Conventional fluctuation analyses primarily rely on ratios of cumulants of conserved charges, which can exhibit sign changes, cancellations among different orders, and sensitivity to competing non-critical backgrounds. In this work, we develop an...

10. Anisotropic hadronic rescattering and its impact on $K^{*0}$ yield, and polarization observable

Kadambini Menduli (Indian Institute of Science Education and Research, Berhampur)

Collectivity and Bulk Dynamics from Small to Large Collision Systems

Poster Presentation

Short-lived hadronic resonances serve as sensitive probes of the evolution of the hadronic phase in relativistic heavy-ion collisions. Among them, the $K^{*0}$ meson, with a lifetime of about $4$ fm/$c$, is particularly sensitive to hadronic rescattering and regeneration occurring between chemical and kinetic freeze-out.

In this work, we investigate the anisotropic suppression of...

37. Baryon–antibaryon $v_1^{\mathrm{even}}$ splitting with multiplicity and net-proton binning

Aradhana Panday (IISER Berhampur)

Collectivity and Bulk Dynamics from Small to Large Collision Systems

Oral Presentation

We investigate the rapidity-even component of directed flow, $v_1^{\mathrm{even}}$, for identified hadrons, with particular emphasis on the splitting between baryons and anti-baryons. We demonstrate that this observable is sensitive to the mechanism of baryon stopping. To explore this sensitivity, we construct event ensembles based on two variables: the conventional event multiplicity and the...

73. Bayesian Uncertainty Refinement of Masses and Decay Widths for Excited $N$ Baryons

Rani Rohit (Institute of Advanced Research, Gandhinagar, Gujarat)

QCD phase diagram, Lattice QCD, and Neutron Stars

Poster Presentation

We calculate the masses and decay widths of the excited N baryons. Our calculated masses of the 2S and 1P states are close to the experimental observations of N(1440) and N(1520), respectively. To further improve the reliability of our results, we implement Bayesian uncertainty refinement, and the optimized mass values for both states lie within the ranges reported by the PDG. Moreover, our...

54. Beyond the Distribution Function: How Viscosity Shapes QGP Observables

Dr V Sreekanth (Amrita Vishwa Vidyapeetham, Coimbatore, India)

Jets in hot and dense QCD matter

Oral Presentation

We investigate viscous effects on heavy-quark (HQ) transport and thermal dilepton production in an evolving quark gluon plasma (QGP) using the Chapman-Enskog (CE) framework up to second order in gradients. Employing temperature and shear-stress profiles from causal dissipative relativistic hydrodynamics, we compare the CE results with those from Grad’s 14-moment approximation. For HQ...

22. Bose–Einstein condensation and spin polarization of rho mesons in rotating hadronic matter

Kshitish Kumar Pradhan (IIT Indore)

QCD phase diagram, Lattice QCD, and Neutron Stars

Poster Presentation

The possibility of Bose–Einstein condensation (BEC) of vector mesons provides an interesting avenue for exploring quantum phenomena in strongly interacting matter under extreme conditions. We investigate the condensation of $\rho$ (spin-1) mesons in a rotating hadronic medium, considering the substantial vorticity generated in non-central heavy-ion collisions. Rotation modifies the...

43. Centrality- and $p_{\mathrm{T}}$-differential anisotropic ($v_{2}$, $v_{3}$) flow with (multi)strange hadrons in OO and NeNe collisions with the CMS detector

Bismita Behera (Indian Institute of Technology Madras (IN))

Collectivity and Bulk Dynamics from Small to Large Collision Systems

Poster Presentation

(Multi)strange hadrons are expected to decouple from the system earlier than
non-strange hadrons and therefore experience reduced interactions during the
late-stage hadronic rescattering. In this measurement, we present the
centrality- and $p_{\mathrm{T}}$-differential elliptic ($v_{2}$) and triangular
($v_{3}$) flow of strange and multistrange hadrons, including
$K^{0}_{\mathrm{S}}$,...

32. Charm quark transport and thermalization in a non-Markovian medium

Monisha Nair (IIT Goa)

Heavy Flavor and Quarkonia

Oral Presentation

Heavy quarks serve as valuable probes of the quark–gluon plasma owing to their early production and subsequent interaction with the evolving medium. In this talk, we present our recent study of charm-quark transport within the Langevin and Fokker–Planck frameworks, incorporating memory effects through an exponentially decaying memory kernel. We discuss the extraction of heavy-quark transport...

45. Charm–strange tetraquark spectroscopy and coupled-channel threshold dynamics near the T ∗ cs0 (2870)

Chetan Lodha

Heavy Flavor and Quarkonia

Poster Presentation

We study the open-charm sectors $cs\bar q\bar q$ and $cq\bar s\bar q$ in a Cornell-type diquark--antidiquark framework and examine $DK$--$D^*K^*$ dressing of the compact $cs\bar q\bar q$ scalar associated with $T_{cs0}^{*}(2870)^0$. The corrected $[cq][\bar s\bar q]$ partition places the axial--axial $cq\bar s\bar q$ spectrum below the $[cs][\bar q\bar q]$ spectrum and produces the observed...

56. Chemical non-equilibrium and shear induced cavitation in the early stage of heavy-ion collisions

Ms Lakshmi J. Naik (Amrita Vishwa Vidyapeetham, Coimbatore)

Initial state and Non-Equilibrium Dynamics

Poster Presentation

We study the shear viscosity induced cavitation in the Quark-Gluon Plasma (QGP) incorporating transverse expansion alongside chemical non-equilibrium dynamics. Chemical non-equilibrium is incorporated through parton fugacities, whose evolution is coupled to causal viscous relativistic hydrodynamics within the Gubser geometry. Using phenomenological temperature-dependent shear viscosity...

5. Chiral critical behavior and strength of U(1)_A symmetry breaking in (2+1)-flavor QCD with Möbius domain-wall fermions

Jishnu Goswami (Bielefeld University)

QCD phase diagram, Lattice QCD, and Neutron Stars

Oral Presentation

Determining the order of the QCD chiral transition in the massless limit remains an important open problem in finite-temperature QCD. The critical behavior near this transition is also closely related to the strength of anomalous (U(1)_A) breaking. Möbius domain-wall fermions provide good control over chiral symmetry at finite cutoff and the correct axial-anomaly structure in the continuum...

18. Chiral Crossover and Chemical Freeze-out in Rotating Hadron Gas System

Nandita Padhan (NIT Durgapur)

QCD phase diagram, Lattice QCD, and Neutron Stars

Oral Presentation

We investigate the effect of global rotation on the chiral crossover transition and chemical freeze-out of strongly interacting matter within the hadron resonance gas (HRG) framework. We extend the conventional formulation of the renormalized chiral condensate to a rotating hadronic medium and determine the corresponding pseudo-critical temperature. We find that rotation suppresses the...

64. Cold nuclear matter (CNM) effects and charmonium production from LHC to FAIR: a unified description

Sourav Kanti Giri (Department of Atomic Energy (IN))

Heavy Flavor and Quarkonia

Poster Presentation

Charmonia, the bound states of a charm quark (c) and its antiquark ($\bar{c}$), are dissociated in a deconfined medium through color Debye screening and hard partonic collisions. Charmonium suppression is therefore regarded as a diagnostic probe of quark-gluon plasma (QGP) formation in relativistic heavy-ion collisions. A rigorous interpretation of their suppression pattern induced by the hot...

21. Collectivity in pp and Pb-Pb Collisions: Mean $p_{\rm{T}}$ and Elliptic Flow of Resonances with ALICE

Mr Hirak Kumar Koley (Jadavpur University (IN))

Collectivity and Bulk Dynamics from Small to Large Collision Systems

Oral Presentation

Hadronic resonances serve as sensitive probes of late-stage rescattering and regeneration effects in heavy-ion and small-system collisions. Unlike long-lived hadrons, resonances decay on timescales that overlap with the hadronic phase itself, making their measured yields and kinematic properties directly sensitive to the interplay between regeneration (leads to enhancement) and rescattering...

63. Collisional Energy Loss of Heavy Quarks in a Ansiotropic and Collisional Quark Gluon Plasma

Sarthak Satapathy (NISER)

Heavy Flavor and Quarkonia

Poster Presentation

In this work we have made an attempt to compute the collisional energy loss of heavy fermions and subsequently heavy quarks in a anisotropic and collisional quark gluon plasma. We have included anisotropy by following the Romatschke-Srickland construction of the distribution function where the non-equilibrium deformation is controlled by an anisotropy parameter. For the inclusion of collisions...

34. Connecting Initial-State Geometry to Anisotropic Flow and Radial Expansion

Adarsh A Nair

Collectivity and Bulk Dynamics from Small to Large Collision Systems

Poster Presentation

Relativistic heavy-ion collisions offer a unique opportunity to explore the collective dynamics of strongly interacting matter produced under extreme conditions. The momentum-space distribution of particles in the final state carries information about the initial collision geometry, subsequent hydrodynamic evolution, and freeze-out dynamics. In this work, we study the transverse-momentum...

70. Conservation-orthogonal observables for long-range correlations in small collision systems

Dr Sunil Jaiswal (Wayne State University)

Collectivity and Bulk Dynamics from Small to Large Collision Systems

Poster Presentation

Long-range correlations observed in high-multiplicity p+p and p+Pb collisions exhibit features similar to those measured in heavy-ion collisions, where they are commonly associated with hydrodynamic collective response. Before extending this interpretation to smaller systems, however, correlations that can arise without hydrodynamic evolution must be quantified. Exact global conservation...

49. Constraining QGP Medium Evolution from Jet Energy Loss within Statistical Framework

Sally Rodrigues (Mukesh Patel School of Technology Management and Engineering)

Jets in hot and dense QCD matter

Oral Presentation

Jets produced in heavy-ion collisions provide valuable probes of the quark–gluon plasma (QGP) and its space-time evolution. In this work, we employ a Bayesian statistical framework based on Markov Chain Monte Carlo (MCMC) sampling to investigate the energy loss of quark and gluon initiated jets propagating through an expanding QGP medium. The energy loss probability distributions are modeled...

7. Dipolar flow of identified hadrons at mid-rapidity using transport models.

Abhisek Praharaj (Indian Institue of Science Education and Research, Berhampur)

Collectivity and Bulk Dynamics from Small to Large Collision Systems

Poster Presentation

In relativistic heavy-ion collisions, the rapidity-even component of directed flow, $v_1^{\rm even}$, is driven predominantly by event-by-event fluctuations and dipolar asymmetries in the initial state [1,2]. Hydrodynamic studies indicate that $v_1^{\rm even}$ is sensitive to the baryon deposition profile, particularly at lower collision energies [3]. Therefore, measurements of $v_1^{\rm...

82. Directed flow across collision systems at RHIC energy: from scaling violation to the onset of collectivity

Kishora Nayak

Electromagnetic probes

Oral Presentation

Directed flow ($v_1$) is generated early in heavy-ion collisions and is sensitive to the tilted initial geometry, the hard–soft asymmetry in particle production, baryon transport, and the response of the medium. We present a systematic study of $v_1$ in symmetric O+O, Cu+Cu, Zr+Zr, Ru+Ru, Au+Au, and U+U collisions at $\sqrt{s_{NN}} = 200$ GeV using the string-melting AMPT model, including its...

71. EFT for QCD at finite T and isospin chemical potential

Rishi Sharma

QCD phase diagram, Lattice QCD, and Neutron Stars

Oral Presentation

Two flavour QCD with identical $u$ and $d$ quark masses and non-zero isospin chemical potential, $\mu^I$, is free from the sign problem for vanishing baryon chemical potential ($\mu_B=0$). Chiral Effective Field Theory ($\chi$EFT) at low temperature predicts a transition to a pion condensed phase at $\mu^I=m_\pi/2$ and predicts the shape of the phase boundary in the $T-\mu^I$ plane [1]. Its...

69. Electromagnetic probes of minijet-medium interplay in heavy-ion collisions

Soham Banerjee (National Institute of Science Education and Research, India)

Electromagnetic probes

Oral Presentation

We investigate direct photon and dilepton production in a concurrent minijet-hydrodynamics framework that consistently incorporates event-by-event initial-state fluctuations and dynamical minijet-medium interactions. Produced in initial hard scatterings, minijets thermalize more slowly than the bulk medium and persist into the hydrodynamic stage, where they deposit energy and momentum into the...

68. Emergent Chiral-Spin Symmetry from Lattice QCD

Sudipta Mondal (Indian Institute Of Science)

QCD phase diagram, Lattice QCD, and Neutron Stars

Poster Presentation

We investigate the possible emergence of chiral-spin symmetry, $SU(2)_\mathrm{CS}$, in hot QCD using lattice simulations with [$N_f = 2+1$ fermions] at temperatures [$T \approx 1.2$–$3\,T_\mathrm{pc}$]. Chiral-spin symmetry has been proposed as an approximate emergent symmetry of QCD in an intermediate-temperature regime above the chiral crossover and may shed light on the nature of strongly...

61. Evolution of Parton Energy Loss Across Collision Systems

Dr Bithika Karmakar (Czech Technical University in Prague)

Jets in hot and dense QCD matter

Oral Presentation

Light-ion collisions provide a unique opportunity to investigate the transition between small and large collision systems and to explore the onset of jet quenching. Following the dedicated O+O and Ne+Ne runs at the LHC in 2025, recent measurements by ALICE and CMS have established evidence for parton energy loss in O+O collisions, motivating detailed theoretical studies. In this study, we...

78. Explainable Machine Learning for PDF Sensitivity Mapping in Deep Inelastic Scattering at the EIC

Maitreyee Mukherjee (Thapar University, Patiala, Punjab)

Machine Learning and AI for High Energy Nuclear Physics

Poster Presentation

Deep Inelastic Scattering (DIS) at the future Electron-Ion Collider (EIC) will provide high-precision access to the partonic structure of nucleons and nuclei over a wide range of Bjorken-(x) and (Q^2). Therefore, precise knowledge of parton distribution functions (PDFs) and their uncertainties is essential to exploit the full QCD potential of the EIC.

In this work we study an explainable...

25. Exploring Exotic Hadronic States through Theoretical Studies of Spectroscopy and Strong Decays

Hardik Rathod (Sardar Vallabhbhai National Institute of Technology)

Heavy Flavor and Quarkonia

Poster Presentation

Understanding the nature of exotic hadronic states requires a combined investigation of their spectroscopy and decay behavior. This study will examine tetraquark candidates as hadronic molecules, describing the interaction between their constituent mesons through a Yukawa potential supplemented by one-boson exchange. The resulting bound-state solutions will provide predictions for molecular...

4. Exploring QCD matter at finite baryon chemical potential: A Deep Learning Approach

Kangkan Goswami (Indian Institute of Technology Indore)

Machine Learning and AI for High Energy Nuclear Physics

Poster Presentation

We investigate the thermodynamic and transport properties of the quark-gluon plasma at finite baryon chemical potential within a deep-learning-assisted quasi-particle model. The temperature and baryon chemical potential-dependent effective masses of partons are estimated using residual neural networks trained on lattice QCD results for the equation of state. Further, mass-regularization...

17. Formulation of Relativistic Spin hydrodynamics

Mr Samapan Bhadury (IISER Berhampur)

Collectivity and Bulk Dynamics from Small to Large Collision Systems

Oral Presentation

The global spin polarization of $\Lambda$-hyperons about the global angular momentum of the non-central relativistic heavy ion collision experiments has been explained successfully under the assumption of equilibrated spin degrees of freedom, where polarization is induced from thermal vorticity. However, the explanation for the observed longitudinal spin polarization is non-trivial. In...

55. From Gibbs to Maxwell: Exploring Hybrid Stars with Intermediate Equations of State

KHUSHBU ZALA

QCD phase diagram, Lattice QCD, and Neutron Stars

Poster Presentation

Hybrid neutron stars offer a promising platform to investigate the possible emergence of deconfined quark matter at supersaturation densities. The hadron-to-quark phase transition within hybrid neutron stars is commonly described by the Gibbs and Maxwell constructions of the equation of state. The two prescriptions respectively correspond to the limiting cases of vanishing and very large...

62. Gluon Wigner Distributions with Transverse Polarizations

Dr Vikash Kumar Ojha (SVNIT Surat)

Physics Opportunities in ep and eA Collisions: From HERA to the EIC

Oral Presentation

We present gluon Wigner distributions at non-zero skewness within the dressed-quark model using light-front wave functions. We focus on configurations involving transverse polarization of the gluon and/or the target and derive analytical expressions for the corresponding Wigner distributions in the boost-invariant longitudinal coordinate, $\sigma$. The resulting distributions exhibit a...

24. Heavy flavor systems in phenomenological models

Dr Ajay Kumar Rai (Sardar vallabhbhai National Institute of Technology-Surat)

Heavy Flavor and Quarkonia

Oral Presentation

The decay properties of $B_c$, charmonium $(c\bar{c})$, and bottomonium $(b\bar{b})$ systems are investigated within a screened potential model. The screening effects are incorporated to obtain the corresponding mass spectra and wave functions. Various decay channels are analyzed in terms of their decay widths and branching fractions. The results are compared with available theoretical and...

72. Heavy-Flavor Spin Polarization: From Initial Magnetic Fields to Fireball Geometry

Dr SOURAV DEY (TIFR, MUMBAI)

Heavy Flavor and Quarkonia

Oral Presentation

We investigate the rotational Brownian motion of heavy quarks in the QCD medium as a framework to study spin polarization of open heavy-flavor hadrons in relativistic heavy-ion collisions. We derive analytical expressions for vector and tensor polarization, corresponding to baryon spin polarization and vector meson spin alignment, respectively. Heavy quarks, produced in early hard scatterings,...

30. Heavy-quark momentum diffusion in the semi-QGP

Diwakar Gaur (Indian Institute of Technology Gandhinagar)

Heavy Flavor and Quarkonia

Poster Presentation

The momentum diffusion coefficient controls the Langevin dynamics of heavy quarks in the Quark Gluon Plasma (QGP). The perturbative calculations assume a trivial Polyakov loop, i.e., a fully deconfined QGP. However, RHIC and LHC probe the temperature windows where the Polyakov loop is significantly below unity, a regime termed the semi-QGP. To address this, we use the Holonomous Hard Thermal...

36. High energy thermal photons from chirally imbalanced QGP

SOURAV DUARI

Electromagnetic probes

Oral Presentation

We compute the thermal photon production rate from a chirally asymmetric quark gluon plasma. We estimate the hard part from scattering of chiral quarks and demonstrate the cutoff independence of the total thermal photon emission rate. This is achieved by combining the hard with the soft contribution evaluated using the Braaten-Pisarski method of hard thermal loop perturbation theory. It is...

19. Higher-Order Cumulants of Mean Transverse Momentum and Elliptic Flow as Tests of Collective Dynamics

Tribhuban Parida (IISER Berhampur)

Collectivity and Bulk Dynamics from Small to Large Collision Systems

Oral Presentation

Correlations between event-by-event mean transverse momentum, $[p_T]$, and elliptic flow, $v_2$, reflect how fluctuations in the initial state influence the final particles produced in heavy-ion collisions. We calculate higher-order mixed cumulants of these observables using relativistic viscous hydrodynamics and compare them with event-by-event predictors constructed from the initial entropy...

23. Identified-hadron production and transverse fragmentation in $e^{+}e^{-}$ collisions at the $Z$ pole with DELPHI

Sunny Kumar Singh (IIT Bombay)

Physics Opportunities in ep and eA Collisions: From HERA to the EIC

Oral Presentation

Identified-hadron measurements in $e^{+}e^{-}$ collisions provide a clean environment for studying parton fragmentation and hadronization, without the partonic initial-state structure, beam remnants, and underlying-event activity characteristic of hadronic collisions. This analysis uses the particle-identification capabilities of DELPHI, combining TPC $dE/dx$ and RICH information making it...

39. In-Medium Modification of Quarkonium States in a Hot Quark–Gluon Plasma

Dr Ajay Kumar Rai (Sardar vallabhbhai National Institute of Technology-Surat), DIPESH YADAV (SARDAR VALLABHBHAI PATEL NATIONAL INSTITUTE OF TECHNOLOGY SURAT(SVNIT)))

Heavy Flavor and Quarkonia

Poster Presentation

We study the behavior of quarkonium states in a hot quark–gluon plasma using a temperature-dependent complex potential. The real part of the potential describes the screening of the interaction in the medium, while the imaginary part accounts for thermal effects that give rise to the decay width. The radial Schrödinger equation is solved numerically at different temperatures to obtain the...

27. Interpreting Graph Neural Networks for Quark-Gluon Jet Tagging

Sunny Kumar Singh (IIT Bombay)

Machine Learning and AI for High Energy Nuclear Physics

Oral Presentation

Quark vs Gluon jet tagging is a key handle on the colour-charge dependence of jet quenching. Machine-learning (ML) taggers such as ParticleNet by now outperform classifiers built from standard QCD observables. However, what these networks learn remains an area of active investigation. Recent studies of their internal representations reveal structures closely correlated with constituent...

48. Investigating collectivity and quantum number conservation with strange--baryon balance function in small collision systems at LHC energies

Yash Patley (IIT- Indian Institute of Technology (IN))

Collectivity and Bulk Dynamics from Small to Large Collision Systems

Oral Presentation

This work presents the first measurement of the $\Lambda\Lambda$ balance functions (BFs) in OO and Ne-Ne collisions at $\sqrt{s_{\rm NN}} = 5.36$ TeV and pp collisions at $\sqrt{s} = 5.36$ TeV and $\sqrt{s} = 13.6$ TeV as a function of charged-particle multiplicity. The BF ($B^{\alpha\beta}$) is defined as the conditional probability of finding a particle $\alpha$ whose quantum numbers are...

13. Investigating light nuclei production in relativistic heavy-ion collisions

Arun Kumar Yadav (Department of Atomic Energy (IN))

Collectivity and Bulk Dynamics from Small to Large Collision Systems

Poster Presentation

The production of light (anti-)nuclei in ultra-relativistic heavy-ion
collisions is often refered to as "snowballs in hell" puzzle: these loosely
bound states are not expected to survive a thermal medium whose
temperature exceeds their per-nucleon binding energy by roughly two
orders of magnitude. We employ a state-of-the-art hybrid thermal-
coalescence approach in which...

29. Isothermal compressibility and speed of sound in magnetized symmetric nuclear matter with broken scale invariance

Dr Pallabi Parui (Saha Institute of Nuclear Physics, 1/AF Bidhannagar, Kolkata, 700064, India)

QCD phase diagram, Lattice QCD, and Neutron Stars

Poster Presentation

The thermodynamical properties of magnetized nuclear matter at finite temperature and baryon chemical potential are studied within an effective model approach incorporating the QCD trace anomaly effect. The presence of magnetic field induces anisotropic structure in the energy momentum tensor due to the broken rotational invariance. The study exhibits a phase transition through the sudden...

66. J/ψ spectral properties and charm quark transport in the quark-gluon plasma

Prasanta Murmu (Indian Institute of Technology Bhilai)

Heavy Flavor and Quarkonia

Oral Presentation

In this work, we investigate the thermal spectral properties of the heavy quark (mainly charm quark) sector in heavy ion collision (HIC) physics by using a finite-temperature field-theoretical framework. Spectral representation, made by one loop self-energy with charm and anti-charm thermal propagators, in the low invariant mass can be associated with the HIC phenomena like charm diffusion in...

51. M-SHIVA 1.0: A Relativistic Resistive Magnetohydrodynamic Framework for Heavy-Ion Collisions and Electromagnetic Energy Transfer in QGP

Krishanu Sengupta (National Institute of Science Education and Research)

Electromagnetic probes

Oral Presentation

Relativistic heavy-ion collisions generate strong electromagnetic fields that interact with the conducting quark-gluon plasma (QGP), motivating a description based on relativistic resistive magnetohydrodynamics (RRMHD). We present M-SHIVA 1.0, a finite-volume RRMHD framework designed for heavy-ion collision studies. The coupled 14-equation system is evolved using an HLL shock-capturing scheme...

79. Magnetic rotational effects on QCD matter across crossover

Ms Sushree Ipsita Sahoo (Bhabha Atomic Research Center, Mumbai)

QCD phase diagram, Lattice QCD, and Neutron Stars

Poster Presentation

It is well established from the first principle lattice QCD calculations that, at low baryon chemical potential, the transition from the confined hadronic phase to the deconfined partonic phase is not a simple first or second-order phase transition but rather a smooth crossover. The crossover is characterized by rapid and continuous changes in thermodynamic observables, such as the pressure,...

53. Mass Dependence of $B_c$-Meson Transition Form Factors and Decay Observables in Heavy-Flavor Decays

Mr Shashank Verma (Sardar Vallabhbhai National Institute of Technology, Surat)

Heavy Flavor and Quarkonia

Poster Presentation

The $B_c$ meson provides a useful laboratory for investigating heavy-quark dynamics and weak decays involving two heavy flavors. In this work, we study the dependence of the $B_c\to\eta_c$ and $B_c\to J/\psi$ transition form factors and corresponding decay observables on the $B_c$-meson mass. The $B_c$ mass is obtained within a semi-relativistic potential-model framework using Hydrogenic and...

75. Mass Spectra of Triply Heavy Baryons in a Relativistic Flux Tube Framework

Pooja Jakhad

Heavy Flavor and Quarkonia

Poster Presentation

Using the relativistic flux tube model with spin-dependent interactions, we present a systematic investigation of the mass spectra of triply heavy baryons. In this framework, the baryon is treated within a heavy-diquark–heavy-quark configuration, where two heavy quarks form a compact diquark connected to the remaining heavy quark through a rotating string-like flux tube. Spin–spin, spin–orbit,...

60. Mass Spectroscopy and decay properties of Strange Baryon

Mr HIMANSHU BISHT

Heavy Flavor and Quarkonia

Poster Presentation

This study aims to systematically investigate the mass spectroscopy and decay properties of
strange baryons. This work presents a systematic investigation of the spectroscopy and decay
behaviour of strange hadrons within the framework of constituent quark models and Regge
trajectory formalism. The masses of ground and excited states are calculated and analysed
through Regge trajectories in...

9. Measurement of $K^{*0}$ and $K^{*\pm}$ Resonances Production in Au+Au Collisions at RHIC BES-II

Mr Pranjal Barik (Indian Institute of Science Education and Research (IISER) Berhampur)

Collectivity and Bulk Dynamics from Small to Large Collision Systems

Poster Presentation

Isospin symmetry, one of the fundamental symmetries underlying the strong interaction, predicts similar production rates of charged and neutral kaons in high-energy collisions. However, recent measurements by the NA61/SHINE Collaboration indicate an excess production of charged over neutral kaons, suggesting significant isospin symmetry breaking that challenges the expectation, and the...

6. Measurement of $K^{*0}$ Resonance Production in Au+Au Collisions at $\sqrt{s_{NN}}=3$ GeV

Kadambini Menduli (Indian Institute of Science Education and Research, Berhampur)

Collectivity and Bulk Dynamics from Small to Large Collision Systems

Oral Presentation

Short-lived resonances such as $K^{*0}$ serve as sensitive probes of the hadronic phase in relativistic heavy-ion collisions, as their yields can be significantly modified by in-medium rescattering and regeneration. At lower collision energies ($\sqrt{s_{NN}} \sim 3\text{-}5$ GeV), the extracted chemical and kinetic freeze-out temperatures are found to be closer to each other, potentially...

81. Measurements of Quarkonia in RUN 3 with ALICE at the LHC

Dhananjaya Thakur (IIT(BHU), Varanasi)

Heavy Flavor and Quarkonia

Poster Presentation

The production and azimuthal anisotropy of heavy quarkonia in ultrarelativistic heavy-ion collisions serve as powerful diagnostics of the thermodynamic and transport properties of the quark–gluon plasma (QGP). While production yields are governed by the interplay between color screening and deconfinement-induced recombination, the elliptic flow coefficient ($v_{2}$) offers severe constraints...

77. Momentum-Resolved Long-Range Correlations in High-Multiplicity Jets

Anuraag Rathore (Indian Institute of Technology Mandi - IIT-Mandi (IN))

Jets in hot and dense QCD matter

Poster Presentation

Recent CMS measurements of high-multiplicity jets in pp collisions at centre of mass energy 13 TeV have revealed an enhancement of jet-frame elliptic anisotropy at large charged-particle multiplicity. This study investigates the momentum-scale and longitudinal structure of these correlations using PYTHIA8 simulations of anti-kT, R=0.8, high-pT jets. Two-particle correlations are constructed in...

46. Multiple (multi-)strange hadron production, baryon-to-meson ratio and nuclear modification factor in OO and NeNe collisions with CMS

Arunima Swain (Indian Institute of Technology Madras (IN))

Collectivity and Bulk Dynamics from Small to Large Collision Systems

Poster Presentation

Measurements of (multi-)strange hadrons over a wide transverse momentum range may provide particularly strong evidence for the existence of a thermalized partonic state of matter in heavy-ion collisions. We present first measurements of transverse momentum spectra, mean pT, baryon-to-meson ratios and nuclear modification factor for the (multi-)strange hadrons such as $K^{0}_{S}$, $\Lambda$,...

14. Performance and Characterization of Indigenously Developed p-Type Silicon Pad Sensors for the ALICE FoCal Upgrade

Arun Kumar Yadav (Department of Atomic Energy (IN))

Advanced Detector Technologies and Instrumentation in High Energy Physics

Oral Presentation

The Forward Calorimeter (FoCaL) is a planned upgrade of the ALICE experiment at the CERN LHC, designed to measure primarily direct photons, neutral mesons, and jets at forward rapidities. These measurements will probe the gluon distributions in protons and nuclei at very small Bjorken-x, where non-linear QCD effects such as gluon saturation are expected to emerge. The electromagnetic part of...

41. Photon Observables as Probes of Nuclear Structure and Collective Dynamics in Heavy-Ion Collisions

Amit Paul (Variable Energy Cyclotron Centre (VECC), Kolkata)

Electromagnetic probes

Oral Presentation

Photons produced in relativistic heavy-ion collisions provide a clean probe of the hot and dense medium, as they are emitted throughout its space-time evolution and are largely unaffected by final-state interactions. While early studies focused mainly on the initial temperature, photon observables now offer insights into the initial geometry, collective dynamics, and space-time evolution. In...

1. Probing $\alpha$-cluster compactness through collective flow in TeV-scale light-ion collisions

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

Collectivity and Bulk Dynamics from Small to Large Collision Systems

Oral Presentation

Recent measurements of $^{16}\rm O$--$^{16}\rm O$ and $^{20}\rm Ne$--$^{20}\rm Ne$ collisions at the CERN Large Hadron Collider provide a new opportunity to investigate the emergence of collective behaviour in hot QCD matter produced in relativistic collisions. The collective expansion of the quark–gluon plasma (QGP) is known to be sensitive to the initial geometry and deformations of the...

3. Probing Charm Hadronisation through Baryon-Meson and Strangeness-Sensitive Flow Measurements at CMS.

Mr Diwakar Singh Yadav (Indian Institute of Technology Madras (IN))

Heavy Flavor and Quarkonia

Oral Presentation

The hadronisation of charm quarks within the Quark-Gluon Plasma (QGP) provides a unique laboratory to study non-perturbative QCD dynamics and the collective evolution of the medium. We present new measurements from the CMS experiment utilising lead-lead (PbPb) collision data. We report the first CMS measurement of the elliptic flow (v_2) of the prompt Lambda_c baryon using the high-statistics...

52. Probing Collective Dynamics with Radial Flow in O+O and Ne+Ne Collisions

Mr Kaiser Shafi (Indian Institute of Science Education and Research, Berhampur)

Collectivity and Bulk Dynamics from Small to Large Collision Systems

Oral Presentation

Collisions of light nuclei at the Large Hadron Collider (LHC) provide a unique opportunity to investigate the collective dynamics and initial-state properties of strongly interacting matter in relatively small collision systems. In this work, we study the production of charged particles and collective flow in O+O and Ne+Ne collisions at 5.36 TeV. We first validate our framework by reproducing...

74. Probing initial state of Heavy ion collisions using \(\mathrm{D^0}-\mathrm{ \bar D^0}\) correlations

Jay Solanki (Indian institue technology indore)

Heavy Flavor and Quarkonia

Poster Presentation

Ultrarelativistic heavy-ion collisions provide a unique environment for studying strongly interacting matter under extreme conditions and the formation of the quark–gluon plasma (QGP). The collision begins from a highly non-equilibrium initial state, where strong gluonic fields may be present during the pre-equilibrium glasma stage. Since heavy quarks are produced predominantly at very early...

35. Probing Jet-Quenching Effects in Small Collision Systems via High-$p_{\mathrm{T}}$ Di-Hadron Correlations

Mintu Haldar (Bose Institute (IN))

Jets in hot and dense QCD matter

Poster Presentation

Jet-quenching, the suppression of high-$p_{\mathrm{T}}$ partons traversing the hot and dense QCD medium, is a key signature of quark-gluon plasma (QGP) formation in heavy-ion collisions. Whether an analogous effect persists in small collision systems at LHC and whether it is dense and extended enough to modify hard probes, remains an open and interesting question. The recent LHC oxygen-oxygen...

20. Probing the evolution of light-ion collisions with resonances in ALICE

Sarjeeta Gami (National Institute of Science Education and Research (NISER) (IN))

Jets in hot and dense QCD matter

Oral Presentation

Light-ion collisions at the LHC provide an opportunity to study the evolution of strongly interacting matter between small and large collision systems. The 2025 LHC run delivered, for the first time, pO, OO, and Ne--Ne collisions, enabling systematic studies of particle production and medium effects over a broad range of event activity.

In this contribution, new measurements of...

8. Probing the hadronic phase through baryonic hadronic resonance production with ALICE

Dr Nasir Mehdi Malik (IISER Berhampur)

Collectivity and Bulk Dynamics from Small to Large Collision Systems

Oral Presentation

Baryonic resonances are highly sensitive observables for understanding the late-stage dynamics and particle production mechanisms in high-energy collisions. Because their lifetimes (≈ 12.6 fm/c for the Λ(1520) and ≈ 21.7 fm/c for the Ξ(1530)0) are of the same order as the lifespan of the hadronic phase, they provide a unique window into re-scattering and regeneration effects. This work...

59. Probing the role of color reconnection in the radial-flow observable $v_{0}(p_{\rm T})$ in pp collisions at $\sqrt{s} = 13.6$ TeV with PYTHIA8

Mr Rohit Agarwala (Department of Physics, Bodoland University)

Collectivity and Bulk Dynamics from Small to Large Collision Systems

Poster Presentation

Color reconnection (CR) in PYTHIA8 is known to generate flow-like effects in small collision systems [1], yet its impact on the $p_{\rm T}$-differential radial-flow observable $v_{0}(p_{\rm T})$ has remained unexplored. Using the PYTHIA8 model, we study the effect of CR mechanism on the $v_{0}(p_{\rm T})$ observable in pp collisions at $\sqrt{s} = 13.6$ TeV. The inclusive $v_{0}(p_{\rm T})$...

16. Probing thermal and geometric fluctuations of the QGP initial state with spectra-flow correlations

Dr Rupam Samanta (Institute of Nuclear Physics (IFJ, PAN), Poland)

Collectivity and Bulk Dynamics from Small to Large Collision Systems

Oral Presentation

We introduce a new observable, $v_{02}(p_T)$, which correlates the hadron transverse-momentum spectrum with the squared elliptic flow $v_2^2$. It is constructed in analogy with the recently measured $v_0(p_T)$, which correlates the spectrum with the event-wise mean transverse momentum $[p_T]$. As a three-particle correlation, $v_{02}(p_T)$ is substantially less sensitive to nonflow than...

15. Quark Spin Precession Induced Hadron Polarization in Heavy-Ion Collisions

Dr Captain Rituraj Singh (National Institute of Science Education and Research, India)

Heavy Flavor and Quarkonia

Poster Presentation

We investigate quark spin precession as a probe of the magnetic field produced in heavy-ion collisions (HICs). The magnetic field induces Larmor precession of quarks, while the opposite charges of quarks and antiquarks result in characteristic charge-dependent spin rotations. We demonstrate this mechanism through polarization splitting between $\Lambda$ and $\bar{\Lambda}$ hyperons and extend...

31. Quark-interchange estimates of the $P_c(4440)^+$ and $P_c(4457)^+$ decays into $\Sigma_c^*(2520)\bar D$

Mr Vandan Patel (Sardar Vallabhbhai National Institute of Technology Surat, Gujarat, India)

Heavy Flavor and Quarkonia

Poster Presentation

The narrow $P_c(4440)^+$ and $P_c(4457)^+$ structures lie close to the $\Sigma_c\bar D^$ threshold and are widely discussed as $S$-wave hadronic molecules, but their spin ordering remains unresolved. We investigate the complementary open-charm transitions $P_c(4440/4457)^+\to\Sigma_c^(2520)\bar D$, considering the $J^P=3/2^-$ assignment separately for each resonance. Since $\Sigma_c^*(2520)$...

67. Quarkonia and Heavy Quark dynamics in QGP via Open Quantum Systems

Vyshakh B R (Tata Institute of Fundamental Research)

Heavy Flavor and Quarkonia

Oral Presentation

We present our study of non-Markovian effects on the evolution of quarkonia and heavy quarks in the QGP using the framework of open quantum systems. For quarkonia, we set up a general non-Markovian master equation to describe their evolution in the medium, without assuming the quantum Brownian regime. We quantify the effect of the hierarchy between the binding energy and the medium...

76. Radiation-Induced Degradation and Defect-Aware TCAD Modeling of 4H-SiC LGADs

Mr Jaideep Kalani (Tata Institute of Fundamental Research (IN))

Advanced Detector Technologies and Instrumentation in High Energy Physics

Oral Presentation

4H-SiC Low-Gain Avalanche Detectors (LGADs) are promising for precision timing applications in high-radiation environments because of their wide bandgap, high critical electric field, and low leakage current. In this work, we use Silvaco Victory TCAD to study the effects of radiation-induced defects on the performance of 4H-SiC LGADs.

The study focuses on distinguishing the contributions of...

42. Regge Trajectory Analysis of $B$ and $B_s$ Mesons

Juhi Oudichhya (SVNIT Surat)

Heavy Flavor and Quarkonia

Poster Presentation

In recent years, the experimental study of bottom mesons has attracted considerable attention due to the observation of several new excited states. In this work, we systematically investigate the mass spectra of the $B$ and $B_s$ mesons within the framework of Regge phenomenology. Assuming the existence of quasi-linear Regge trajectories, various relations among the Regge slopes, intercepts,...

38. Relativistic Flux Tube Description of Heavy-Heavy Meson Spectroscopy Using the Lagrange Mesh Method

Mr V.G. Prajapati (Sardar Vallabhbhai National Institute Of Technology)

Heavy Flavor and Quarkonia

Poster Presentation

We investigate the spectroscopy of heavy-heavy mesons within the relativistic flux tube (RFT) framework using a semirelativistic Hamiltonian incorporating a linear confining interaction and a Coulomb-like one-gluon-exchange contribution. The spin-independent bound-state problem is solved numerically in momentum space using the Lagrange mesh method (LMM), providing an efficient treatment of the...

40. Spin relaxation of heavy quarks from momentum diffusion in the quark-gluon plasma

Ankit Kumar (Indian Institute of Technology Gandhinagar)

Heavy Flavor and Quarkonia

Oral Presentation

Heavy-quark spin dynamics in the quark-gluon plasma provides a potential probe of the interaction between heavy quarks and the medium. We develop a stochastic framework in which the random momentum kicks responsible for heavy-quark diffusion also induce spin rotation through Thomas precession. Starting from the Thomas-Bargmann-Michel-Telegdi equation and a Langevin equation for heavy-quark...

44. Study of azimuthal anisotropy and transverse profile of ρ⁰ vector meson in photonuclear collisions with CMS

Man Singh (Indian Institute of Technology Madras (IN))

Electromagnetic probes

Poster Presentation

The |t| dependence of coherent $\rho^0$ photoproduction probes the transverse structure of the interaction and exhibits diffractive dip structures related to saturation effects. Under s-channel helicity conservation, photon polarization is transferred to the vector meson, leading to a $\cos(2\phi)$ modulation of its decay distribution. Since either nucleus can emit the photon, the two...

80. Study of Quarkonium in Hot QCD medium with NRQCD corrected interquark potential

Sandeepan Sahoo (IIT Gandhinagar)

Heavy Flavor and Quarkonia

Poster Presentation

The heavy quark-antiquark potential in quarkonium becomes increasingly Debye-screened with rising temperature and acquires an imaginary part due to Landau damping. Due to its complex in a thermal QGP medium, the quarkonia develop a finite width which eventually cause the dissociation of the bound state at a certain temperature as well create finite survival probabilities for the state. Since...

33. System-Size Dependence of Charged-Particle Multiplicity and Elliptic Flow in Pb+Pb and O+O Collisions.

Sairik Kanti Ghosh (IISER Berhampur)

Collectivity and Bulk Dynamics from Small to Large Collision Systems

Poster Presentation

The study of charged-particle production and collective flow in relativistic heavy-ion collisions provides important insight into the properties and space-time evolution of strongly interacting matter. In this work, we investigate the pseudorapidity dependence of charged-particle multiplicity and elliptic flow in Pb+Pb collisions at $\sqrt{s_{NN}}=5.02$ TeV and O+O collisions at...

58. The sphaleron and axion production rates in QCD at high temperatures

Sayak Guin (The Institute of Mathematical Sciences)

Initial state and Non-Equilibrium Dynamics

Oral Presentation

We have discussed our new lattice results for the sphaleron rate calculated within a thermal effective field theory of soft SU(N) gluons whose momenta are below the magnetic scale, where $N=2,3$, for a wide range of temperatures spanning from $0.6$ to $10^{15}$ GeV at sufficiently large volumes. We have shown that our result for the sphaleron rate matches the parametric estimate at very high...

26. Thermal photons production from QGP at finite baryon density

Dr Nilanjan Chaudhuri (Variable Energy Cyclotron Centre)

Electromagnetic probes

Poster Presentation

We report the first analytic proof that the intermediate momentum cutoff separating hard and soft contributions to thermal photon production cancels exactly at finite quark chemical potential, previously confirmed only numerically. We identify and resolve an inconsistency in an earlier attempted closed-form hard contribution, thereby arriving at a well-behaved, closed-form, cutoff-independent...

83. Thermodynamics and Isentropic Evolution of QCD Matter at Finite Baryon Denisty and Magnetic Field

Sanjeebani Biswal (Homi Bhabha National Institute, Mumbai)

QCD phase diagram, Lattice QCD, and Neutron Stars

Poster Presentation

Understanding the thermodynamic evolution of strongly interacting matter requires an equation of state connecting hadronic and partonic degrees of freedom. The transition between hadronic and partonic phases at very small baryon chemical potential is known to be smooth crossover. To map this region we construct a hybrid equation of state by pressure interpolation between an ideal hadron...

65. Transverse Shower Profile Analysis for Photon Identification in the ALICE FoCal Detector

Subham Paul (IISER Tirupati)

Machine Learning and AI for High Energy Nuclear Physics

Poster Presentation

High-energy particle collisions at the LHC produce prompt photons, which carries clean information about the partons, quarks and gluons, inside the colliding protons or nuclei. The dominant contamination in any such measurement comes from neutral pions ($\pi^0$), which decay into two photons which are boosted so close together that they strike the detector at a very mimimum distance
and...

28. Understanding Baryon Stopping and Baryon Diffusion from Baryon-AntiBaryon Elliptic Flow Splitting

Ms Priya Priya (Indian Institute of Science Education and Research, Berhampur)

Collectivity and Bulk Dynamics from Small to Large Collision Systems

Poster Presentation

At lower collision energies, baryon stopping becomes increasingly important, resulting in a baryon-rich medium and pronounced baryon-antibaryon differences in the collective flow coefficients, particularly $v_1$ and $v_2$. A quantitative description of these splittings requires a realistic treatment of the initial net-baryon distribution. While hydrodynamic models with finite baryon density...

12. Utilizing the Boltzmann Transport Equation (BTE) and $q$-Weibull distribution to study the Nuclear Modification Factor

Rohit Gupta (Kashi Naresh University, Bhadohi)

Jets in hot and dense QCD matter

Poster Presentation

One of the primary goals of ongoing and upcoming particle physics experiments is the study of QCD matter created under extreme condition of temperature and energy density called Quark Gluon Plasma (QGP). Among several possible signatures of QGP formation, most prominent one is the nuclear modification factor. A proper parameterization scheme is required to systematically study the behavior of...

2. Vector Meson Photoproduction in Ultraperipheral PbPb Collisions at CMS

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

Electromagnetic probes

Poster Presentation

Photon-induced vector meson production in ultraperipheral heavy-ion collisions (UPCs) offers a unique and powerful probe of the gluon distribution in nuclei. Coherent vector meson photoproduction in UPCs of lighter species such as the $\rho0$ and $\phi$ serves as a powerful tool for investigating the gluon structure of nuclei at small Bjorken-$x$, accessing lower energy scales with potential...

50. Viscous Effects on Heavy-Quark Collisional Energy Loss in a Weakly Magnetized QGP

Tanmay Mondal (National Institute of Science Education and Research)

Heavy Flavor and Quarkonia

Oral Presentation

Heavy quarks are produced early in heavy-ion collisions and probe the entire evolution of the quark–gluon plasma. In non-central collisions, this medium is both viscous and permeated by a magnetic field that falls in the weak-field regime (eB ≪ T²) during the QGP stage. In this talk, we examine how viscous corrections and a weak magnetic field jointly affect the soft collisional energy loss of...