A5105782739- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Particle Detector Development and Performance
- Quantum Chromodynamics and Particle Interactions
- Dark Matter and Cosmic Phenomena
- Computational Physics and Python Applications
- Neutrino Physics Research
- Cosmology and Gravitation Theories
- Astrophysics and Cosmic Phenomena
- Radiation Detection and Scintillator Technologies
- Distributed and Parallel Computing Systems
- Medical Imaging Techniques and Applications
- advanced mathematical theories
- Black Holes and Theoretical Physics
- Advanced Data Storage Technologies
- Atomic and Subatomic Physics Research
- Superconducting Materials and Applications
- Structural Analysis of Composite Materials
- Muon and positron interactions and applications
- Cold Fusion and Nuclear Reactions
- earthquake and tectonic studies
- Engineering and Materials Science Studies
- Big Data Technologies and Applications
- CCD and CMOS Imaging Sensors
- Algorithms and Data Compression
Palacký University Olomouc
2016-2025
Instituto de Óptica "Daza de Valdés"
2025
Czech Academy of Sciences, Institute of Physics
2019-2024
Northern Illinois University
2023-2024
A. Alikhanyan National Laboratory
2024
SR Research (Canada)
2024
Federación Española de Enfermedades Raras
2024
Atlas Scientific (United States)
2024
The University of Adelaide
2019-2023
Osaka Metropolitan University
2023
We study the application of selected ML techniques to recognition a substructure hadronic final states (jets) and their tagging based on possible origin in current HEP experiments using simulated events parameterized detector simulation. The results are then compared with cut-based method.
We have developed a fully-automated instrument (FASCam—Fast All Sky Camera) designed to capture night all-sky images and analyse cloudiness coarse atmospheric properties for proposed next-generation ultrahigh energy cosmic ray observatory, called the Fluorescence detector Array of Single-pixel Telescopes (FAST). FASCam has 360 × 90o (azimuth elevation) field view is equipped with series photometric Johnson-Cousins filters (BVR) an Ultra-violet (UV) filter. The camera installed on top one...
The origin and nature of ultra-high-energy cosmic rays (UHECRs) remain an open question in astroparticle physics. Motivated by the need for unprecedented aperture further advancements, Fluorescence detector Array Single-pixel Telescopes (FAST) is a prospective next-generation, ground-based UHECR observatory that aims to cover huge area deploying large array low-cost fluorescence detectors. full-scale FAST prototype consists four 20 cm photomultiplier tubes at focus segmented mirror 1.6 m...
In this paper, we explore the usage of boosted as well semi-boosted topologies in all-hadronic [Formula: see text] final states simulated collisions at text][Formula: text]TeV, with top quarks decaying into a hadronic top-jet or W-jet and an isolated b-jet. Correlations between selected kinematic variables their shapes are studied for scalar vector resonances to pair quarks, also models text]-associated production invisible dark matter particle pair. Stacked signal[Formula: text]background...
We apply both cut-based and machine learning techniques using the same inputs to challenge of hadronic jet substructure recognition, utilizing classical subjettiness variables within Delphes parameterized detector simulation framework. focus on jets generated in simulated proton-proton collisions, identifying those consistent with decay signatures top quarks or W bosons. Such are employed four-top quark events fully final states stemming from Standard Model as well a new physics process...
The origin and nature of ultrahigh-energy cosmic rays (UHECRs) are uppermost importance in astroparticle physics. Motivated by the need for an unprecedented aperture further advancements, Fluorescence detector Array Single-pixel Telescopes (FAST) is a prospective next-generation, ground-based UHECR observatory that aims to cover enormous area deploying large array low-cost fluorescence telescopes. full-scale FAST prototype consists four 20 cm photomultiplier tubes at focus segmented mirror...
Ultra-high energy cosmic rays (UHECRs), whose are beyond $10^{18}~\mathrm{eV}$, the most energetic particles we have ever detected. The latest results seem to indicate a heavier composition at highest energies, complicating search for their origins. Due limited number of UHECR events, need build an instrument with order magnitude larger effective-exposure collect UHECRs in future decades. Fluorescence detector Array Single-pixel Telescopes (FAST) is proposed low-cost, easily deployable...
The Fluorescence detector Array of Single-pixel Telescopes (FAST) is one several proposed designs for a next-generation cosmic-ray detector. Such detectors will require enormous collecting areas whilst also needing to remain cost-efficient. To meet these demands, the FAST collaboration has designed simplified, low-cost fluorescence telescope consisting only four photomultiplier tubes (PMTs). Since standard air shower reconstruction techniques cannot be used with so few PMTs, utilises an...
We present several applications of the particle camera MX-10 in different radiation environments, leading to strikingly observed patterns and consequently composition as well recorded dose.We describe measurements background, cosmic muons direction analysis detection alpha particles a natural cave.We focus on tracks highly ionizing aboard an airplane compute dose rate with altitude.We also comment briefly test beams at accelerator.We discuss problem presenting sensitive results background...
Regularization extensions to the Fully Bayesian Unfolding are implemented and studied with an algorithm of combined sampling find, in a reasonable computational time, optimal value regularization strength parameter order obtain unfolded result desired property, like smoothness. Three conditions using curvature, entropy derivatives applied, as model example, several simulated spectra top-pair quark pairs that produced high energy pp collisions. The existence minimum χ2 between particle-level...
The modelling of minimum bias interactions is a crucial ingredient to learn about the description soft QCD processes. It has also significant relevance for simulation environment at LHC with many concurrent pp (pileup). ATLAS collaboration provided new measurements inclusive charged-particle multiplicity and its dependence on transverse momentum pseudorapidity in special data sets low beam currents, recorded center mass energies 8 TeV 13 TeV. use selections both 100 MeV 500 MeV, various...
The origin and nature of ultra-high energy cosmic rays (UHECRs) are hot topics in the astroparticle physics community. Fluorescence detector Array Single-pixel Telescopes (FAST) is a design for next-generation ground-based UHECR observatory, addressing requirements large-area, low-cost suitable measuring properties highest with an unprecedented aperture. We have developed full-scale prototype consisting four 200 mm photomultiplier tubes at focus segmented mirror 1.6 m diameter. Over last...
Many physics measurements at a hadron collider critically depend on an accurate knowledge of the energy jets resulting from fragmentation quarks and gluons generated in hard scatter. The precise determination jet scale is challenging project, involving corrections for physics, instrumental algorithm‐related effects. We present most recent DZero experiment during Run II Tevatron proton‐antiproton collider. review procedure followed, estimated systematic uncertainties, as well validation...
We apply gradient boosting machine learning techniques to the problem of hadronic jet substructure recognition using classical subjettiness variables available within a common parameterized detector simulation package DELPHES. Per-jet tagging classification is being explored. Jets produced in simulated proton-proton collisions are identified as consistent with hypothesis coming from decay top quark or W boson and used reconstruct mass hypothetical scalar resonance decaying pair quarks events...
We report on measurements of the ttbar production cross section at a center-of-mass energy 1.96 TeV D0 experiment during Run II Fermilab Tevatron collider. use candidate events in lepton+jets and dilepton final states. In most sensitive channel (lepton+jets channel), neural network algorithm that uses lifetime information to identify b-quark jets is used distinguish signal from background processes. also present single top quark using several multivariate techniques separate background.
We present several applications of the particle camera MX-10 in different radiation environments, leading to strikingly observed patterns and consequently composition as well recorded dose. describe measurements background, cosmic muons direction analysis detection alpha particles a natural cave. focus on tracks highly ionizing aboard an airplane compute dose rate with altitude. also comment briefly test beams at accelerator. discuss problem presenting sensitive results background levels...
The origin and nature of ultra-high energy cosmic rays (UHECRs) are hot topics in the astroparticle physics community. Fluorescence detector Array Single-pixel Telescopes (FAST) is a design for next-generation ground-based UHECR observatory, addressing requirements large-area, low-cost suitable measuring properties highest with an unprecedented aperture. We have developed full-scale prototype consisting four 200 mm photomultiplier tubes at focus segmented mirror 1.6 m diameter. Over last...