V. Pantuev
A5071107909- High-Energy Particle Collisions Research
- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- Nuclear reactor physics and engineering
- Neutrino Physics Research
- Particle Detector Development and Performance
- Dark Matter and Cosmic Phenomena
- Nuclear physics research studies
- Nuclear Physics and Applications
- Radiation Detection and Scintillator Technologies
- Astrophysics and Cosmic Phenomena
- Atomic and Subatomic Physics Research
- Muon and positron interactions and applications
- Statistical Methods and Bayesian Inference
- Superconducting Materials and Applications
- Radioactive Decay and Measurement Techniques
- Particle accelerators and beam dynamics
- Particle Accelerators and Free-Electron Lasers
- Pediatric Urology and Nephrology Studies
- Stochastic processes and statistical mechanics
- Atomic and Molecular Physics
- Pulsars and Gravitational Waves Research
- Theoretical and Computational Physics
- X-ray Spectroscopy and Fluorescence Analysis
- Crystallography and Radiation Phenomena
Institute for Nuclear Research
2016-2025
Charles University
2016-2023
PHENIX laboratory
2003-2023
Banaras Hindu University
1998-2023
Abilene Christian University
2003-2023
Augustana University
2016-2023
Moscow Institute of Physics and Technology
2019-2023
Bhabha Atomic Research Centre
2023
Stony Brook University
2012-2022
Russian Academy of Sciences
1992-2020
An electron antineutrino mass has been measured in tritium $\ensuremath{\beta}$ decay the Troitsk $\ensuremath{\nu}$-mass experiment. The setup consists of a windowless gaseous source and an electrostatic spectrometer. whole data set acquired from 1994 to 2004 was reanalyzed. A thorough selection with reliable experimental conditions performed. We checked every known systematic effect obtained following estimate for neutrino squared...
We present a comprehensive review of keV-scale sterile neutrino Dark Matter, collecting views and insights from all disciplines involved - cosmology, astrophysics, nuclear, particle physics in each case viewed both theoretical experimental/observational perspectives. After reviewing the role active neutrinos physics, we focus on context Matter puzzle. Here, first motivation for based challenges tensions purely cold scenarios. then round out discussion by critically summarizing known...
We review the physics potential of a next generation search for solar axions: International Axion Observatory (IAXO) . Endowed with sensitivity to discover axion-like particles (ALPs) coupling photons as small gaγ∼ 10−12 GeV−1, or electrons gae∼10−13, IAXO has find QCD axion in 1 meV∼1 eV mass range where it solves strong CP problem, can account cold dark matter Universe and be responsible anomalous cooling observed number stellar systems. At same time, will have enough detect lower axions...
A bstract This article describes BabyIAXO, an intermediate experimental stage of the International Axion Observatory (IAXO), proposed to be sited at DESY. IAXO is a large-scale axion helioscope that will look for axions and axion-like particles (ALPs), produced in Sun, with unprecedented sensitivity. BabyIAXO conceived test all subsystems (magnet, optics detectors) relevant scale final system thus serve as prototype IAXO, but same time fully-fledged physics reach itself, potential discovery....
In this document the PHENIX collaboration proposes a major upgrade to detector at Relativistic Heavy Ion Collider. This upgrade, sPHENIX, enables an extremely rich jet and beauty quarkonia physics program addressing fundamental questions about nature of strongly coupled quark-gluon plasma (QGP), discovered experimentally RHIC be perfect fluid. The startling dynamics QGP on fluid-like length scales is emergent property quantum chromodynamics (QCD), seemingly implicit in Lagrangian but...
In this paper we present the details of our previously published results for a search an additional neutrino mass state in $\beta$-electron spectrum from Troitsk nu-mass experiment. Here steps analysis, show set likelihood functions obtained each heavy value. We demonstrate how systematic errors were estimated. also compare with those recently similar analysis Mainz data and try to explain why there is factor 2-3 difference sensitivity mass.
We discuss the physics case for and concept of a medium-scale axion helioscope with sensitivities in axion-photon coupling few times better than CERN Axion Solar Telescope (CAST). Search an axion-like particle these couplings is motivated by several persistent astrophysical anomalies. present early conceptual design, existing infrastructure, projected sensitivity timeline such (Troitsk Experiment, TASTE) to be constructed Institute Nuclear Research, Troitsk, Russia. The proposed instrument...
We propose a new experiment to search for sterile neutrino in few keV mass range at the "Troitsk nu-mass" facility. The expected signature corresponds kink electron energy spectrum tritium beta-decay. goal compared our previous will be precision measurements well below end point. experimental installation consists of windowless gaseous source and high resolution electromagnetic spectrometer. estimate that current bounds on mixing parameter can improved by an order magnitude under 5 without...
The PHENIX collaboration presents a concept for major upgrade to the detector at Relativistic Heavy Ion Collider (RHIC). This upgrade, referred as sPHENIX, brings exciting new capability RHIC program by opening and important channels experimental investigation utilizing fully luminosity of recently upgraded facility. sPHENIX enables compelling jet physics that will address fundamental questions about nature strongly coupled quark-gluon plasma discovered experimentally be perfect fluid....
Sterile neutrinos are a minimal extension of the Standard Model Particle Physics. A promising model-independent way to search for sterile is via high-precision beta spectroscopy. The Karlsruhe Tritium Neutrino (KATRIN) experiment, equipped with novel multi-pixel silicon drift detector focal plane array and read-out system, named TRISTAN detector, has potential supersede sensitivity previous laboratory-based searches. In this work we present characterization first prototypes electrons...
This article describes BabyIAXO, an intermediate experimental stage of the International Axion Observatory (IAXO), proposed to be sited at DESY. IAXO is a large-scale axion helioscope that will look for axions and axion-like particles (ALPs), produced in Sun, with unprecedented sensitivity. BabyIAXO conceived test all subsystems (magnet, optics detectors) relevant scale final system thus serve as prototype IAXO, but same time fully-fledged physics reach itself, potential discovery. The...
New data on Λ production in Au+Au collisions at 11.5A GeV/c are presented. The measurements cover the rapidity range from y=2.0 to 3.5 and transverse momenta pt=0.15 1.5 GeV/c. distributions, momentum spectra, azimuthal distributions presented for different centralities of collision. A strong positive directed flow forward is observed semicentral collisions. measured yields, compared with predictions relativistic quantum molecular dynamics (RQMD) v2.3 model.Received 6 July...
I propose a simple explanation of the ``ridge'' seen in near-side jet two-particle correlation function heavy ion collisions at RHIC. This could be cumulative shock wave produced liquid-like matter by an energetic stopped parton. Splash liquid direction opposite to fast penetrating object is known effect. In nucleus-nucleus collision trigger escaped non-interacting Partner parton medium forming conical-like with density depletion behind proposed scenario waves will move three directions: two...
Sterile neutrinos emerge in minimal extensions of the Standard Model which can solve a number open questions astroparticle physics. For example, sterile keV-mass range are viable dark matter candidates. Their existence would lead to kink-like distortion tritium β-decay spectrum. In this work we report about instrumentation Troitsk nu-mass experiment with 7-pixel TRISTAN prototype detector and measurements both differential integral mode. The combination two modes is key requirement for...
Two-proton correlation functions have been measured in Si+Pb collisions at 14.6A GeV/c and Au+Au 11.5A by the E814/E877 collaboration. Data are compared with predictions of transport model RQMD source size is inferred from this comparison. Our analysis shows that, for both reactions, characteristic system freeze-out exceeds projectile, suggesting that fireball created collision has expanded. For observed centrality dependence two-proton function implies more central lead to a larger sizes.