D. Ivanishchev
A5090450946- High-Energy Particle Collisions Research
- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- Particle Detector Development and Performance
- Nuclear physics research studies
- Dark Matter and Cosmic Phenomena
- Nuclear reactor physics and engineering
- Statistical Methods and Bayesian Inference
- Pediatric Urology and Nephrology Studies
- Magnetic confinement fusion research
- Stochastic processes and statistical mechanics
- Statistical Mechanics and Entropy
- Atmospheric Ozone and Climate
- Computational Physics and Python Applications
- Astro and Planetary Science
- Theoretical and Computational Physics
- Neutrino Physics Research
- Radiation Detection and Scintillator Technologies
- Pulsars and Gravitational Waves Research
- X-ray Spectroscopy and Fluorescence Analysis
- Superconducting Materials and Applications
- Particle accelerators and beam dynamics
- Cold Atom Physics and Bose-Einstein Condensates
- Markov Chains and Monte Carlo Methods
- Gas Dynamics and Kinetic Theory
Petersburg Nuclear Physics Institute
2016-2025
Augustana University
2018-2024
Banaras Hindu University
2018-2024
Bhabha Atomic Research Centre
2018-2024
European Organization for Nuclear Research
2024
Abilene Christian University
2018-2023
PHENIX laboratory
2019-2023
Kurchatov Institute
2016-2023
Charles University
2018-2023
New Mexico State University
2014-2019
PHENIX presents a simultaneous measurement of the production direct γ and π0 in d+Au collisions at sNN=200 GeV over pT range 7.5 to 18 GeV/c for different event samples selected by activity, i.e., charged-particle multiplicity detected forward rapidity. Direct-photon yields are used empirically estimate contribution hard-scattering processes samples. Using this estimate, average nuclear-modification factor, RdAu,EXPπ0, is 0.925±0.023(stat)±0.15(scale), consistent with unity minimum-bias (MB)...
We present measurements of the elliptic flow (v2) as a function transverse momentum (pT), pseudorapidity (η), and centrality in d+Au collisions at sNN=200, 62.4, 39, 19.6 GeV. The beam-energy scan provides testing ground for onset signatures small collision systems. measure nonzero v2 signal all four energies, which, midrapidity low pT, is consistent with predictions from viscous hydrodynamic models. Comparisons calculations parton transport models (based on ampt Monte Carlo generator) show...
Hot QCD physics studies the nuclear strong force under extreme temperature and densities. Experimentally these conditions are achieved via high-energy collisions of heavy ions at Relativistic Heavy Ion Collider (RHIC) Large Hadron (LHC). In past decade, a unique substantial suite data was collected RHIC LHC, probing hydrodynamics nucleon scale, dependence transport properties quark-gluon plasma, phase diagram matter, interaction quarks gluons different scales much more. This document, as...
The PHENIX collaboration has measured high-$p_T$ dihadron correlations in $p$$+$$p$, $p$$+$Al, and $p$$+$Au collisions at $\sqrt{s_{_{NN}}}=200$ GeV. arise from inter- intra-jet thus have sensitivity to nonperturbative effects both the initial final states. distributions of $p_{\rm out}$, transverse momentum component associated hadron perpendicular trigger hadron, are sensitive state momenta. These multi-differentially as a function $x_E$, longitudinal fraction with respect hadron....
PHENIX presents a simultaneous measurement of the production direct $\gamma$ and $\pi^0$ in $d$$+$Au collisions at $\sqrt{s_{_{NN}}}=200$ GeV over $p_T$ range 7.5 to 18 GeV/$c$ for different event samples selected by activity, i.e. charged-particle multiplicity detected forward rapidity. Direct-photon yields are used empirically estimate contribution hard-scattering processes samples. Using this estimate, average nuclear-modification factor $R_{d\rm Au,EXP}^{\gamma^{\rm dir}}$ is...
PHENIX has measured the azimuthal correlations of muon pairs from charm and bottom semi-leptonic decays in $p$+$p$ collisions at $\sqrt{s}=200$ GeV, using a novel analysis technique utilizing both unlike- like-sign to separate charm, Drell-Yan contributions. The dimuon measurements combined with previous electron-muon dielectron span wide range rapidity, are well described by PYTHIA Tune A. Through Bayesian based on A, we show that leading order pair creation is dominant...
The main goal of the future NICA-MPD experiment is studying dense baryonic matter produced in heavy-ion collisions energy range 4-11 GeV and searching for signs phase transition between hadronic deconfined quark-gluon plasma. Measurements soft thermal photon yields collective flow can significantly extend physics program MPD experiment, allowing one to probe temperature level thermalizaion medium created heavy ion at NICA energies. optimal method measure photons register conversions material...
The study of hadronic resonance production is an essential part the physical programs many heavy-ion experiments. Detailed measurement properties also foreseen in future Multi-Purpose Detector (MPD) experiment at NICA collider. In this report, we focus on experimental challenges for reconstruction resonances experiments and examine MPD capabilities ρ(770)0, K*(892)0,±, φ(1020), Λ(1520), Σ(1385)± Ξ(1530)0.
Measurements of K * (892) meson production provide the means to study properties relativistic heavy-ion collisions. Because their short lifetimes, charged and neutral mesons information about late hadronic phase due presence rescattering regeneration effects that can modify resonance yields. The also be used various mechanisms shape particle transverse momentum (pT) spectra, including collective flow, in-medium parton energy loss recombination. Measurement requires reconstruction pions kaons...
Abstract The K * (892) 0 and Φ(1020) mesons are copiously produced in hadronic heavy-ion collisions carry a wealth of information on different aspects the interactions, including properties phase, relative interplay radial flow coalescence at intermediate momentum. For these reasons, measurements production is an important part experimental program MPD experiment NICA. We discuss prospects for setup as well results feasibility studies performed using full-scale Monte Carlo simulations...
Abstract The MPD experiment is aimed to study strongly interacting matter in nucleus-nucleus collisions at the future NICA collider energy range 4-11 GeV per nucleon pair. Neutral pion and η measurements via two-photon decays will allow extend variety of registered particle species provide important information on dynamics properties medium created heavy ion energies. measurement neutral meson spectra also as a first step towards analysis thermal photons sensitive temperature produced...
Spectra of thermal photons carry important information on the temperature hot and dense medium produced in heavy ion collisions. Photons can be measured via their conversion into electron-positron pairs detector material. In this contribution, challenges photon reconstruction are discussed feasibility studies measurements future multipurpose (MPD) experiment at NICA presented. The obtained results indicate good prospects for measurements.
The Compressed Baryonic Matter (CBM) experiment is a dedicated heavy ion collision at the FAIR facility. It will be one of first HEP experiments which works in triggerless mode: data received DAQ from detectors not associated with events by hardware trigger anymore. All raw within giventime period collected continuously containers, so-called time-slices. task reconstruction algorithms to create out this stream. In contribution, optimization software RICH detector free-streaming flow...
Abstract Thermal photons serve as valuable probes of the hot and dense medium produced in heavy ion collisions. The effective thermal photon temperature measured at RHIC LHC energies far exceeds predicted for phase space transition into deconfined state quarks gluons, known quark-gluon plasma (QGP). Direct measurements collisions future NICA collider may help to estimate lower trace from QGP hadron gas state. In this contribution, we present feasibility studies on AuAu using conversion...
Abstract Photons serve as valuable probes of the properties hot and dense nuclear matter created in collisions heavy ions. Thermal photon spectra at RHIC LHC energies indicate that temperature produced medium far exceeds phase transition to quark-gluon plasma lattice QCD calculations. Measurements thermal ion lower future NICA collider may help trace from partonic hadronic degrees freedom. In this contribution, feasibility studies on measurements using conversion method MPD experiment will...
Collisions of asymmetric nuclei (Cu+Au) differ essentially from the case symmetric (Cu+Cu, Au+Au) collisions in geometry overlap region. This leads to a number consequences, which provide more absolute and accurate information about fundamental properties matter under extreme conditions. Nuclear modification factors for π-mesons Cu+Au interactions at 200 GeV were measured PHENIX Experiment RHIC. New experimental data on measurement flows different order (v1, v2) light hadrons will be...