M. Borysova
A5047631369- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Quantum Chromodynamics and Particle Interactions
- Particle Detector Development and Performance
- Radiation Detection and Scintillator Technologies
- Particle Accelerators and Free-Electron Lasers
- Neutrino Physics Research
- Cosmology and Gravitation Theories
- Dark Matter and Cosmic Phenomena
- Laser-Plasma Interactions and Diagnostics
- Black Holes and Theoretical Physics
- Astrophysics and Cosmic Phenomena
- Advanced X-ray Imaging Techniques
- Atomic and Subatomic Physics Research
- Statistical Methods and Bayesian Inference
- Medical Imaging Techniques and Applications
- Ionosphere and magnetosphere dynamics
- Gas Dynamics and Kinetic Theory
- Particle accelerators and beam dynamics
- Noncommutative and Quantum Gravity Theories
- Plasma Diagnostics and Applications
- CCD and CMOS Imaging Sensors
- X-ray Spectroscopy and Fluorescence Analysis
- Electron and X-Ray Spectroscopy Techniques
- Pulsars and Gravitational Waves Research
Duquesne University
2022-2023
Institute for Nuclear Research
2010-2022
Weizmann Institute of Science
2022
Taras Shevchenko National University of Kyiv
2005-2021
Deutsches Elektronen-Synchrotron DESY
2007-2021
Max Planck Society
2019
Tel Aviv University
2018-2019
Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara
2017
Centro Brasileiro de Pesquisas Físicas
2015-2016
National Academy of Sciences of Ukraine
2010-2012
A test of lepton universality, performed by measuring the ratio branching fractions $B^{0} \rightarrow K^{*0}\mu^{+}\mu^{-}$ and K^{*0}e^{+}e^{-}$ decays, $R_{K^{*0}}$, is presented. The $K^{*0}$ meson reconstructed in final state $K^{+}\pi^{-}$, which required to have an invariant mass within 100$\mathrm{\,MeV}c^2$ known $K^{*}(892)^{0}$ mass. analysis using proton-proton collision data, corresponding integrated luminosity about 3$\mathrm{\,fb}^{-1}$, collected LHCb experiment at...
A highly significant structure is observed in the $\Lambda_c^+K^-\pi^+\pi^+$ mass spectrum, where $\Lambda_c^+$ baryon reconstructed decay mode $pK^-\pi^+$. The consistent with originating from a weakly decaying particle, identified as doubly charmed $\Xi_{cc}^{++}$. difference between masses of $\Xi_{cc}^{++}$ and states measured to be $1334.94 \pm 0.72 (\mathrm{stat}) 0.27 (\mathrm{syst}~\mathrm{MeV}/c^2$, then determined $3621.40 (\mathrm{syst} 0.14 \, (\Lambda_c^+)~\mathrm{MeV}/c^2$,...
Abstract This Conceptual Design Report describes LUXE (Laser Und XFEL Experiment), an experimental campaign that aims to combine the high-quality and high-energy electron beam of European with a powerful laser explore uncharted terrain quantum electrodynamics characterised by both high energy intensity. We will reach this hitherto inaccessible regime physics analysing electron-photon photon-photon interactions in extreme environment provided intense focus. The background its relevance are...
We report evidence of a narrow structure, $X(5568)$, in the decay sequence $X(5568) \rightarrow B_s^0 π^{\pm}$, $B_s^0 J/ψϕ$, $J/ψ\rightarrow μ^+ μ^-$, $ϕ\rightarrow K^+K^-$. This is for first instance hadronic state with valence quarks four different flavors. The mass and natural width this are measured to be $m = 5567.8 \pm 2.9 {\rm \thinspace (stat)} ^{+0.9}_{-1.9} (syst)}$ MeV/$c^2$ $Γ= 21.9 6.4 ^{+5.0}_{-2.5} (syst)} $ MeV/$c^2$. If B_s^* π^{\pm} γπ^{\pm}$ an unseen $γ$, $m(X(5568))$...
We present a measurement of the forward–backward asymmetry in top quark–antiquark production using full Tevatron Run II data set collected by D0 experiment at Fermilab. The is performed lepton+jets final states new kinematic fitting algorithm for events with four or more jets and partial reconstruction only three jets. Corrected detector acceptance resolution effects, evaluated to be AFB=(10.6±3.0)%. Results are consistent standard model predictions which range from 5.0% 8.8%. also...
We present the observation of doubly-produced $J/\psi$ mesons with D0 detector at Fermilab in $p\bar{p}$ collisions $\sqrt{s}=1.96$ TeV. The production cross section for both singly and is measured using a sample an integrated luminosity 8.1fb$^{-1}$. For first time, double separated into contributions due to single parton scatterings. Using these measurements, we determine effective $\sigma_{eff}$, parameter characterizing spatial area parton-parton interactions related density inside nucleon.
We describe an analysis comparing the $p\overline{p}$ elastic cross section as measured by D0 Collaboration at a center-of-mass energy of 1.96 TeV to that in $pp$ collisions TOTEM 2.76, 7, 8, and 13 using model-independent approach. The sections, extrapolated $\sqrt{s}=1.96\text{ }\text{ }\mathrm{TeV}$, are compared with measurement region diffractive minimum second maximum section. two data sets disagree $3.4\ensuremath{\sigma}$ level thus provide evidence for $t$-channel exchange...
Abstract This Technical Design Report presents a detailed description of all aspects the LUXE (Laser Und XFEL Experiment), an experiment that will combine high-quality and high-energy electron beam European with high-intensity laser, to explore uncharted terrain strong-field quantum electrodynamics characterised by both high energy intensity, reaching Schwinger field beyond. The further implications for search physics beyond Standard Model are also discussed.
We report the first observation of single-top-quark production in s channel through combination CDF and D0 measurements cross section proton-antiproton collisions at a center-of-mass energy 1.96 TeV. The data correspond to total integrated luminosities up 9.7 fb−1 per experiment. measured is σs=1.29+0.26−0.24 pb. probability observing statistical fluctuation background observed size or larger 1.8×10−10, corresponding significance 6.3 standard deviations for presence an s-channel contribution...
The production of J/$ψ$ mesons is studied in proton-lead collisions at the centre-of-mass energy per nucleon pair $\sqrt{s_{\text{NN}}}=8.16$ TeV with LHCb detector LHC. double differential cross-sections prompt and nonprompt are measured as functions transverse momentum rapidity nucleon-nucleon frame. Forward-to-backward ratios nuclear modification factors determined. results compared theoretical calculations based on collinear factorisation using parton distribution functions, colour glass...
We present a measurement of the electron charge asymmetry in $p\overline{p}\ensuremath{\rightarrow}W+X\ensuremath{\rightarrow}e\ensuremath{\nu}+X$ events at center-of-mass energy 1.96 TeV, using data corresponding to $9.7\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ integrated luminosity collected with D0 detector Fermilab Tevatron Collider. The is measured as function pseudorapidity and presented five kinematic bins based on transverse missing event. compared next-to-leading-order...
We present the final combination of CDF and D0 measurements cross sections for single-top-quark production in proton-antiproton collisions at a center-of-mass energy 1.96 TeV. The data correspond to total integrated luminosities up $9.7\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ per experiment. $t$-channel section is measured be ${\ensuremath{\sigma}}_{t}=2.2{5}_{\ensuremath{-}0.31}^{+0.29}\text{ }\mathrm{pb}$. also combinations two-dimensional $s$- vs section. In addition, we give...
We report evidence for the simultaneous production of $J/\psi$ and $\Upsilon$ mesons in 8.1 fb$^{-1}$ data collected at $\sqrt{s}=$1.96 TeV by D0 experiment Fermilab $p \bar p$ Tevatron Collider. Events with these characteristics are expected to be produced predominantly gluon-gluon interactions. In this analysis, we extract effective cross section characterizing initial parton spatial distribution, $\sigma_{eff}=2.2\pm 0.7\mbox{(stat)} \pm 0.9 \mbox{(syst)} ~\mbox{mb}$.
Drell-Yan lepton pairs produced in the process $p \bar{p} \rightarrow \ell^+\ell^- + X$ through an intermediate $\gamma^*/Z$ boson have asymmetry their angular distribution related to spontaneous symmetry breaking of electroweak force and associated mixing its neutral gauge bosons. The CDF D0 experiments measured effective-leptonic parameter $\sin^2\theta^{\rm lept}_{\rm eff}$ using electron muon selected from full Tevatron proton-antiproton data sets collected 2001-2011, corresponding 9-10...
We measure the mass of top quark in lepton+jets final states using full sample pp collision data collected by D0 experiment Run II Fermilab Tevatron Collider at sqrt[s] = 1.96 TeV, corresponding to 9.7 fb(-1) integrated luminosity. use a matrix element technique that calculates probabilities for each event result from tt production or background. The overall jet energy scale is constrained situ W boson. m(t) 174.98 ± 0.76 GeV. This constitutes most precise single measurement top-quark mass.
We determine the fraction of events with double parton (DP) scattering in a single $p\overline{p}$ collision at $\sqrt{s}=1.96\text{ }\text{ }\mathrm{TeV}$ samples $\ensuremath{\gamma}+3$ jet and $\ensuremath{\gamma}+b/c\text{ }\text{jet}+2$ collected D0 detector corresponding to an integrated luminosity about $8.7\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$. The DP fractions effective cross sections (${\ensuremath{\sigma}}_{\text{eff}}$) are measured for both event using same kinematic...
Production of prompt D 0 mesons is studied in proton-lead and lead-proton collisions recorded at the LHCb detector LHC. The data sample corresponds to an integrated luminosity 1.58±0.02 nb−1 a nucleon-nucleon centre-of-mass energy $$ \sqrt{s_{\mathrm{NN}}}=5 TeV. Measurements differential cross-section, forward-backward production ratio nuclear modification factor are reported using candidates with transverse momenta less than 10 GeV/c rapidities ranges 1.5 < y ∗ 4.0 −5.0 −2.5 system.
This Letter of Intent describes LUXE (Laser Und XFEL Experiment), an experiment that aims to use the high-quality and high-energy electron beam European a powerful laser. The scientific objective is study quantum electrodynamics processes in regime strong fields. High-energy electrons, accelerated by linear accelerator, photons, produced via Bremsstrahlung those colliding with laser shall experience electric field up three times larger than Schwinger critical (the at which vacuum itself...
The search for resonant mass bumps in invariant-mass distributions remains a cornerstone strategy uncovering Beyond the Standard Model (BSM) physics at Large Hadron Collider (LHC). Traditional methods often rely on predefined functional forms and exhaustive computational human resources, limiting scope of tested final states selections. This work presents BumpNet, machine learning-based approach leveraging advanced neural network architectures to generalize enhance Data-Directed Paradigm...
Precision measurement of hadronic final states presents complex experimental challenges. The study explores the concept a gaseous Digital Hadronic Calorimeter (DHCAL) and discusses potential benefits employing Graph Neural Network (GNN) methods for future collider experiments. In particular, we use GNN to describe calorimeter clusters as point clouds or collection data points representing three-dimensional object in space. Combined with Attention Transformers (GATs) DeepSets algorithms, this...
Abstract Resistive Micro-Pattern Gaseous Detectors (MPGDs) are emerging as promising candidates for high-energy physics applications due to their low material budget, simplified operational schemes, and inherent protection readout electronics. This work presents a comparative study of three resistive MPGD technologies: Micromegas (MM), micro WELL ( μ -RWELL), Plate (RPWELL). The detectors were tested with muon pion beams at the CERN SPS facility. Detection efficiency, cluster size, rate...
A measurement of the shape differential decay rate and associated Isgur-Wise function for ${\mathrm{\ensuremath{\Lambda}}}_{b}^{0}\ensuremath{\rightarrow}{\mathrm{\ensuremath{\Lambda}}}_{c}^{+}{\ensuremath{\mu}}^{\ensuremath{-}}{\overline{\ensuremath{\nu}}}_{\ensuremath{\mu}}$ is reported, using data corresponding to $3\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ collected with LHCb detector in proton-proton collisions. The...
We present a study of the inclusive production $X(4140)$ state with decay to $J/\ensuremath{\psi}\ensuremath{\phi}$ final in hadronic collisions. Based on $10.4\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ $p\overline{p}$ collision data collected by D0 experiment at Fermilab Tevatron collider, we report first evidence for prompt an and find fraction events originating from $b$ hadrons be...
We use a sample of diphoton+dijet events to measure the effective cross section double parton interactions, which characterizes area containing interacting partons in proton-antiproton collisions, and find it be σeff=19.3±1.4(stat)±7.8(syst) mb. The was collected by D0 detector at Fermilab Tevatron collider p¯p collisions √s=1.96 TeV corresponds an integrated luminosity 8.7 fb−1.Received 17 December 2015DOI:https://doi.org/10.1103/PhysRevD.93.052008© 2016 American Physical SocietyPhysics...
The production of top quark-antiquark pair events in $p\bar{p}$ collisions at $\sqrt{s}=1.96$ TeV is studied as a function the transverse momentum and absolute value rapidity quarks well invariant mass $t\bar{t}$ pair. We select containing an isolated lepton, large imbalance momentum, four or more jets with least one jet identified to originate from $b$ quark. data sample corresponds 9.7 fb$^{-1}$ integrated luminosity recorded D0 detector during Run II Fermilab Tevatron Collider. Observed...