N. L. Belyaev
A5054695437- 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
- Cosmology and Gravitation Theories
- Neutrino Physics Research
- Distributed and Parallel Computing Systems
- Radiation Detection and Scintillator Technologies
- Astrophysics and Cosmic Phenomena
- Black Holes and Theoretical Physics
- Medical Imaging Techniques and Applications
- Solar and Space Plasma Dynamics
- Particle Accelerators and Free-Electron Lasers
- Big Data Technologies and Applications
- Radiation Therapy and Dosimetry
- Atomic and Subatomic Physics Research
- Advanced Data Storage Technologies
- Structural Analysis of Composite Materials
- Fractal and DNA sequence analysis
- Atmospheric Ozone and Climate
- Structural Health Monitoring Techniques
- Statistical Distribution Estimation and Applications
- Islamic Thought and Society Studies
Massachusetts Institute of Technology
2023-2025
European Organization for Nuclear Research
2023-2024
Moscow Engineering Physics Institute
2015-2023
The University of Adelaide
2016-2023
University of Bonn
2023
University of Bern
2023
Lawrence Berkeley National Laboratory
2023
University of Sussex
2016-2020
University of Pisa
2020
University of Rome Tor Vergata
2019
We present results over an 11-year Solar cycle of cosmic antiprotons based on <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mn>1.1</a:mn><a:mo>×</a:mo><a:msup><a:mn>10</a:mn><a:mn>6</a:mn></a:msup></a:math> events in the rigidity range from 1.00 to 41.9 GV. The <c:math xmlns:c="http://www.w3.org/1998/Math/MathML" display="inline"><c:mover accent="true"><c:mi>p</c:mi><c:mo stretchy="false">¯</c:mo></c:mover></c:math> fluxes exhibit distinct properties. magnitude...
We present the precision measurements of 11 years daily cosmic electron fluxes in rigidity interval from 1.00 to 41.9 GV based on 2.0×10^{8} electrons collected with Alpha Magnetic Spectrometer (AMS) aboard International Space Station. The exhibit variations multiple timescales. Recurrent flux periods 27 days, 13.5 and 9 days are observed. find that show distinctly different time proton fluxes. Remarkably, a hysteresis between is observed significance greater than 6σ at rigidities below 8.5...
Precision measurements by the Alpha Magnetic Spectrometer (AMS) on International Space Station of deuteron (<a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mrow><a:mi>D</a:mi></a:mrow></a:math>) flux are presented. The based <c:math xmlns:c="http://www.w3.org/1998/Math/MathML" display="inline"><c:mrow><c:mn>21</c:mn><c:mo>×</c:mo><c:msup><c:mrow><c:mn>10</c:mn></c:mrow><c:mrow><c:mn>6</c:mn></c:mrow></c:msup></c:mrow></c:math> <e:math...
We report the properties of precision time structures cosmic nuclei He, Li, Be, B, C, N, and O fluxes over an 11-year solar cycle from May 2011 to November 2022 in rigidity range 1.92 60.3 GV. The show similar but not identical variations with amplitudes decreasing increasing rigidity. In particular, below 3.64 GV B fluxes, 2.15 are significantly less affected by modulation than He flux. observe that these differences linearly correlated spectral indices fluxes. This shows, a...
We report the properties of primary cosmic-ray sulfur (S) in rigidity range 2.15 GV to 3.0 TV based on 0.38×10^{6} nuclei collected by Alpha Magnetic Spectrometer experiment (AMS). observed that above 90 dependence S flux is identical Ne-Mg-Si fluxes, which different from He-C-O-Fe fluxes. found that, similar N, Na, and Al cosmic rays, over entire range, traditional rays S, Ne, Mg, C all have sizeable secondary components, Mg fluxes are well described weighted sum silicon fluorine flux,...
We present the precision measurements of 11 years daily cosmic positron fluxes in rigidity range from 1.00 to 41.9 GV based on 3.4×10^{6} positrons collected with Alpha Magnetic Spectrometer (AMS) aboard International Space Station. The show distinctly different time variations electron at short and long timescales. A hysteresis between is observed a significance greater than 5σ rigidities below 8.5 GV. On contrary, proton similar variation. Remarkably, we found that are modulated more for 7...
In this article, the prospects for studying tensor structure of HZZ vertex with LHC experiments are presented. The couplings in Higgs di-boson decays is investigated by measuring asymmetries and studing shapes final state angular distributions. expected background contributions, detector resolution, trigger selection efficiencies taken into account. potential to discover sizeable non-Standard Model contributions $300\;{\rm fb}^{-1}$ $3000\;{\rm demonstrated.
Measurements of hadron production in the TeV energy range are one tasks future studies at Large Hadron Collider (LHC). The main goal these experiments is a study fundamental QCD processes this range, which very important not only for probing Standard Model but also ultrahigh-energy cosmic particle physics. One key elements measurements identification. detector technology has potential ability to separate hadrons Transition Radiation Detector (TRD) technology. TRD prototype based on straw...
Abstract Many modern and future accelerator cosmic ray experiments require identification of particles with Lorentz γ-factor up to 10 4 above. The only technique which reaches this range factors is based on the transition radiation detectors (TRD). This paper describes development a TRD straw proportional tubes. A prototype such kind detector was built tested at CERN SPS accelerator. Monte Carlo simulation model matches well experimental data developed. program used for full-scale hadron TeV...
The present version of the Transition Radiation (TR) simulation module implemented in Geant4 toolkit describes very well experimental data for TR energy distribution; however, it does not allow reproducing details angular distribution at small angles. In order to solve this problem, corrections existing x-ray are proposed. With these corrections, results simulations a good agreement with distributions predicted by theory and obtained test beam measurements using 480 um Si pixel detector...
In recent years, developments of gaseous detectors based on a combination electron multiplication gap in the gas and pixel readout chips as part anode plane (GasPixel detectors) reached level where they can offer unique opportunities for particle detection. Transition radiation (TR) this technology be one possible applications. work, measurements energy spectra angular distributions transition photons produced by particles with different gamma factors made GridPix detector prototype are...
Abstract New developments of pixel detectors based on GaAs sensors offer effective registration the transition radiation (TR) X-rays and perform simultaneous measurements their energies emission angles. This unique feature opens new possibilities for particle identification basis maximum available information about generated TR photons. Results studies energy-angular distributions using a 500 |j.m thick sensor attached to Timepix3 chip are presented. Measurements, analysis techniques...
We studied the rare muon decay process . This Standard Model is background with respect to signal which predicted by many extensions of SM. show that could be suppressed cuts on total energy charged leptons in kinematic region where new physics such as expected appear. Also, we demonstrated angular distributions products are sensitive polarization and used distinguish from
After the Higgs boson discovery at LHC, a lot of additional measurements should be performed to understand in details properties observed particle. These include cross sections measurements, couplings studies interaction vertex structures etc. One most perspective subjects study is kinematics production jets, associated with boson. It demonstrated, that kinematic correlations such jets can used distinguish different channels boson: gluon-gluon fusion (ggF) and vector (VBF). Such separation...
Abstract Studying of hadron production in forward direction at the LHC energy has a great interest both for understanding fundamental QCD processes and also applied areas such as description ultra-high cosmic particle interactions. The energies secondary hadrons studies almost reach maximum available ~6 TeV, which corresponds to Lorentz γ -factor up 10 4 above. only effective technique able identify particles this range is based on transition radiation detectors (TRD). Prototypes kind...
Since the Higgs boson discovery in 2012, ATLAS and CMS collaborations are performing intensive studies of its properties. Those include, among other things, measurements cross sections, branching ratios, coupling constants mass. In this paper, current status effective field theory interpretations simplified template section is presented for different production modes decay channels boson. Limits on couplings were set by using 13 TeV proton-proton collisions data recorded detectors at LHC.