Publications (49)
Evolution of pion HBT radii from RHIC to LHC -- Predictions from ideal hydrodynamics
Evan Frodermann, Rupa Chatterjee, Ulrich Heinz
We present hydrodynamic predictions for the charged pion HBT radii for a range of initial conditions covering those presumably reached in Pb+Pb collisions at the LHC. We study cent…
Correlation between initial spatial anisotropy and final momentum anisotropies in relativistic heavy ion collisions
Sanchari Thakur, Sumit Kumar Saha, Pingal Dasgupta +2
The particle momentum anisotropy () produced in relativistic nuclear collisions is considered to be a response of the initial geometry or the spatial anisotropy of the…
Enhancement of thermal photon production in event-by-event hydrodynamics
Rupa Chatterjee, Hannu Holopainen, Thorsten Renk +1
Thermal photon emission is widely believed to reflect properties of the earliest, hottest evolution stage of the medium created in ultra-relativistic heavy-ion collisions. Previous…
Characterization of relativistic heavy-ion collisions at the Large Hadron Collider through temperature fluctuations
Sumit Basu, Rupa Chatterjee, Bastanta K. Nandi +1
We propose to characterize heavy-ion collisions at ultra-relativistic energies by using fluctuations of energy density and temperature. Temperature fluctuations on an event-by-even…
Influence of initial state fluctuations on the production of thermal photons
Rupa Chatterjee, Hannu Holopainen, Thorsten Renk +1
Inhomogeneities in the initial QCD matter density distribution increase the production of thermal photons significantly compared to a smooth initial-state-averaged profile in the r…
Elliptic flow of thermal photons and formation time of quark gluon plasma at RHIC
Rupa Chatterjee, Dinesh K. Srivastava
We calculate the elliptic flow of thermal photons from Au+Au collisions at RHIC energies for a range of values for the formation time but fixed entropy (or particle rapidity…
Triangular flow of thermal photons from an event-by-event hydrodynamic model for 2.76A TeV Pb+Pb collisions at LHC
Rupa Chatterjee, Dinesh K. Srivastava, Thorsten Renk
We calculate the triangular flow parameter of thermal photons from an event-by-event ideal hydrodynamic model for central collisions of Pb nuclei at …
Mean free path of photons in relativistic heavy ion collisions
Jajati K. Nayak, Rupa Chatterjee
Electromagnetic probes, such as photons and dileptons, play a key role in diagnosing the initial temperature of the hot and dense quark-gluon plasma (QGP) matter created in relativ…
Production and anisotropic flow of thermal photons in collision of -clustered carbon with heavy nuclei at relativistic energies
Pingal Dasgupta, Rupa Chatterjee, Guo-Liang Ma
The presence of -clustered structure in the light nuclei produces different exotic shapes in nuclear structure studies at low energies. Recent phenomenological studies suggest…
Longitudinal asymmetry in heavy ion collisions at RHIC
Sanchari Thakur, Sumit Kumar Saha, Sk Noor Alam +2
The longitudinal asymmetry arises in relativistic heavy ion collisions due to fluctuation in the number of participating nucleons. This asymmetry causes a shift in the center of ma…
Electroweak Physics: Summary
Rupa Chatterjee
Electroweak probes are potential tool to study the properties of the hot and dense strongly interacting matter produced in relativistic nuclear collisions due to their unique natur…
Initial Temperature and Extent of Chemical Equilibration of Partons in Relativistic Collision of Heavy Nuclei
Dinesh K. Srivastava, Rupa Chatterjee, Munshi G. Mustafa
We emphasize that a knowledge of energy and entropy densities of quark gluon plasma - a thermalized de-confined matter, formed in relativistic heavy ion collisions fixes the format…
Directed flow of photons in Cu+Au collisions at RHIC
Pingal Dasgupta, Rupa Chatterjee, Dinesh K. Srivastava
Event-by-event fluctuations in the positions of nucleons in two colliding identical nuclei can lead to non-uniform initial energy density distribution on the transverse plane. In a…
Formation Time of QGP from Thermal Photon Elliptic Flow
Rupa Chatterjee, Dinesh K. Srivastava
We show that the transverse momentum dependent elliptic flow of thermal photons is quite sensitive to the initial formation time () of Quark Gluon Plasma (QGP) for…
Effect of initial-state nucleon shadowing on the elliptic flow of thermal photons
Pingal Dasgupta, Rupa Chatterjee, Sushant K. Singh +1
Recently the effect of nucleon shadowing on the Monte-Carlo Glauber initial condition was studied and its role on the centrality dependence of elliptic flow () and fluctuation…
Dynamics of Hot QCD Matter 2024 -- Bulk Properties
Prabhakar Palni, Amal Sarkar, Santosh K. Das +44
The second Hot QCD Matter 2024 conference at IIT Mandi focused on various ongoing topics in high-energy heavy-ion collisions, encompassing theoretical and experimental perspectives…
Elliptic flow of thermal dileptons in relativistic nuclear collisions
Rupa Chatterjee, Dinesh K. Srivastava, Ulrich W. Heinz +1
We calculate the transverse momentum and invariant mass dependence of elliptic flow of thermal dileptons for Au+Au collisions at the Relativistic Heavy Ion Collider. The system is…
Thermal photons as a sensitive probe of -cluster in C+Au collisions at the BNL Relativistic Heavy Ion Collider
Pingal Dasgupta, Guo-Liang Ma, Rupa Chatterjee +3
Different orientations of -clustered carbon nuclei colliding with heavy ions can result in a large variation in the value of anisotropic flow. Thus, photon flow observables fro…
Time Evolution of Thermal Photon Elliptic Flow
Rupa Chatterjee, Dinesh K. Srivastava, Ulrich Heinz
Elliptic flow of thermal photons has a great potential to explore the early time dynamics and evolution of Quark Gluon Plasma. dependent temporal contours for photon spectra…
Dynamics of Quark Gluon Plasma and Interference of Thermal Photons
Dinesh K. Srivastava, Rupa Chatterjee, Somnath De
The quantum statistical interference between identical particles emitted from a completely chaotic source is expected to provide valuable input for the space time description of th…
Equation of state of strongly interacting matter: spectra for thermal particles and intensity correlation of thermal photons
Somnath De, Dinesh K. Srivastava, Rupa Chatterjee
We find that an equation of state for hot hadronic matter consisting of all baryons having GeV and all mesons having GeV, along with Hagedorn resonances in therma…
Anisotropic flow of thermal photons at RHIC and LHC
Rupa Chatterjee, Pingal Dasgupta, Dinesh K. Srivastava
We calculate elliptic and triangular flow parameters of thermal photons using an event-by-event hydrodynamic model with fluctuating initial conditions at 200A GeV Au+Au collisions…
Transport Dynamics of Parton Interactions in pp Collisions at LHC Energies
Dinesh K. Srivastava, Rupa Chatterjee, Steffen A. Bass
We investigate the transport dynamics of partons in proton-proton collisions at the Large Hadron Collider using a Boltzmann transport approach, the parton cascade model. The calcul…
Spectra and elliptic flow of thermal photons from full overlap U+U collisions at RHIC
Pingal Dasgupta, Rupa Chatterjee, Dinesh K. Srivastava
We calculate spectra and elliptic flow for tip-tip and body-body configurations of full overlap uranium-uranium (U+U) collisions using a hydrodynamic model with smooth initia…
A Reanalysis of Single Photon Data at CERN SPS
Charles Gale, Rupa Chatterjee, Dinesh K. Srivastava +1
We reanalyze the WA98 single photon data at CERN SPS by incorporating several recent developments in the study of prompt and thermal photon production from relativistic heavy ion c…
Collision centrality and dependence of the emission of thermal photons from fluctuating initial state in ideal hydrodynamic calculation
Rupa Chatterjee, Hannu Holopainen, Thorsten Renk +1
Fluctuations in the initial QCD matter density distribution are found to enhance the production of thermal photons significantly in the range 2 \leq pT \leq 4 GeV/c compared to a s…
Bottom Production in Collisions at Large Hadron Collider Energies using Parton Cascade Model
Rupa Chatterjee, Dinesh K. Srivastava
We study the production of bottom quarks in collisions at Large Hadron Collider energies using previously developed parton cascade model to explore the impact of Landau Pomera…
Interference of thermal photons from quark and hadronic phases in relativistic collisions of heavy nuclei
Dinesh Kumar Srivastava, Rupa Chatterjee
We explore the intensity correlations for thermal photons having 2 GeV/, for central collisions of heavy nuclei at RHIC and LHC energies. These photons get competing c…
Ratio of photon anisotropic flow in relativistic heavy ion collisions
Rupa Chatterjee, Pingal Dasgupta
The dependent elliptic and triangular flow parameters of direct photons are known to be dominated by thermal radiations. The non-thermal contributions dilute the photon aniso…
Thermal photon at LHC from fluctuating initial conditions
Rupa Chatterjee, Dinesh K. Srivastava, Thorsten Renk
We calculate the triangular flow parameter of thermal photons for 0--40\% central collisions of Pb nuclei at LHC using an event-by-event hydrodynamic model with fluctuating i…
Specific Heat of Matter Formed in Relativistic Nuclear Collisions
Sumit Basu, Sandeep Chatterjee, Rupa Chatterjee +2
We report the excitation energy dependence of specific heat (\cv) of hadronic matter at freeze-out in Au+Au and Cu+Cu collisions at the Relativistic Heavy Ion Collider energies by…
Zeroing in on the initial state -- tomography using bulk, jets and photons
Thorsten Renk, Rupa Chatterjee, Kari J. Eskola +2
One of the unsolved problems in the current 'standard model' of heavy ion physics is the apparent rapid thermalization of QCD matter in the pre-equilibrium stage. While it is chall…
Azimuthal flow of decay photons in relativistic nuclear collisions
Biswanath Layek, Rupa Chatterjee, Dinesh K. Srivastava
An overwhelming fraction of photons from relativistic heavy ion collisions has its origin in the decay of and mesons. We calculate the azimuthal asymmetry of the decay…
Initial state and evolution of hot and dense medium produced in isobaric collisions at 200A GeV at RHIC
Amit Paul, Rupa Chatterjee
Isobaric collisions provide a unique opportunity to investigate how variations in the charge to mass ratio affect the final state observables produced in relativistic heavy ion col…
Production of Charm Quarks in a Parton Cascade Model for Relativistic Heavy Ion Collisions at = 200 GeV
Dinesh K. Srivastava, Steffen A. Bass, Rupa Chatterjee
We study the production and dynamics of heavy quarks in the parton cascade model for relativistic heavy ion collisions. The model is motivated by the QCD parton picture and describ…
Elliptic flow of thermal photons and dileptons
Ulrich W. Heinz, Rupa Chatterjee, Evan S. Frodermann +2
In this talk we describe the recently discovered rich phenomenology of elliptic flow of electromagnetic probes of the hot matter created in relativistic heavy-ion collisions. Using…
Thermal photons from fluctuating initial conditions
Rupa Chatterjee, Hannu Holopainen, Thorsten Renk +1
Event-by-event fluctuations of initial QCD-matter density produced in heavy-ion collisions at RHIC enhance the production of thermal photons significantly in the region $2 \le p_T…
Landau Pomeranchuk Midgal Effect and Charm Production in Collisions at Large Hadron Collider Energies using the Parton Cascade Model
Dinesh K. Srivastava, Rupa Chatterjee, Steffen A. Bass
We study the impact of the Landau Pomeranchuk Midgal (LPM) effect on the dynamics of parton interactions in proton proton collisions at the Large Hadron Collider energies. For our…
Electromagnetic probes
Rupa Chatterjee, Lusaka Bhattacharya, Dinesh K. Srivastava
We introduce the seminal developments in the theory and experiments of electromagnetic probes for the study of the dynamics of relativistic heavy ion collisions and quark gluon pla…
Maps of the Little Bangs Through Energy Density and Temperature Fluctuations
Sumit Basu, Rupa Chatterjee, Basanta K. Nandi +1
In this letter we propose for the first time to map the heavy-ion collisions at ultra-relativistic energies, similar to the maps of the cosmic microwave background radiation, using…
Medium Modification of Charm Production in Relativistic Heavy Ion Collisions due to Pre-equilibrium Dynamics of Partons at = 0.2--5.02 TeV
Dinesh K. Srivastava, Rupa Chatterjee
We study the production dynamics of charm quarks in the parton cascade model for relativistic heavy ion collisions at RHIC and LHC energies. The model is eminently suited for a stu…
Photon production from Pb+Pb collisions at {} = 5.02 TeV at LHC and at {} = 39 TeV at FCC
Pingal Dasgupta, Somnath De, Rupa Chatterjee +1
We calculate the production of prompt and thermal photons from Pb+Pb collisions at 5.02A TeV at the Large Hadron Collider (LHC) and at 39A TeV at the proposed Future Circular Colli…
Centrality and initial formation time dependence of the emission of thermal photons from fluctuating initial conditions at RHIC and LHC
Rupa Chatterjee, Hannu Holopainen, Thorsten Renk +1
Event-by-event fluctuating initial conditions (IC) in the ideal hydrodynamic calculation are known to enhance the production of thermal photons significantly compared to a smooth i…
Elliptic flow of thermal photons in relativistic nuclear collisions
Rupa Chatterjee, Evan S. Frodermann, Ulrich W. Heinz +1
We predict the transverse momentum (pT) dependence of elliptic flow of thermal photons for Au+Au collisions at the Relativistic Heavy Ion Collider. We model the system hydrodynamic…
Effect of Isolation Criteria on Prompt Photon Production in Relativistic Nuclear Collisions
Sinjini Chandra, Rupa Chatterjee, Zubayer Ahammed
Prompt photon measurements in relativistic nuclear collisions serve as an essential comparative basis for heavy ion studies enabling the separation of medium induced effects. Howev…
Probing Initial State Clustering through Photon Anisotropic Flow in 7A TeV O+O Collisions at the LHC
Sanchari Thakur, Pingal Dasgupta, Rupa Chatterjee +2
The presence of clustered structures in light nuclei can enhance the initial spatial anisotropies in relativistic nuclear collisions relative to those arising from nuclei with…
The neutron skin effect in Pb+Pb collisions at 2.76A TeV at the LHC
Amit Paul, Rupa Chatterjee
Collisions of lead nuclei at relativistic energies provide valuable insight into the properties of the quark gluon plasma formed in such collisions where the initial geometry and d…
Elliptic flow of thermal photons from event-by-event hydrodynamic model
Rupa Chatterjee, Hannu Holopainen, Ilkka Helenius +2
Elliptic flow of direct photons in relativistic heavy ion collisions is believed to be dominated by contribution from thermal radiation of quark gluon plasma up to G…
Single photons from relativistic collision of lead nuclei at CERN SPS: A reanalysis
Rupa Chatterjee, Dinesh K. Srivastava, Sangyong Jeon
We present a reanalysis of single photon production from relativistic collision of lead nuclei at CERN SPS measured by the WA98 experiment. The refinements include use of iso-spin…