Yu. I. Davydov
A5054325588- Particle Detector Development and Performance
- Radiation Detection and Scintillator Technologies
- Particle physics theoretical and experimental studies
- Neutrino Physics Research
- Muon and positron interactions and applications
- Dark Matter and Cosmic Phenomena
- Quantum Chromodynamics and Particle Interactions
- Stochastic processes and financial applications
- Point processes and geometric inequalities
- Nuclear Physics and Applications
- Stochastic processes and statistical mechanics
- High-Energy Particle Collisions Research
- Mathematical Dynamics and Fractals
- Superconducting Materials and Applications
- Atomic and Subatomic Physics Research
- Medical Imaging Techniques and Applications
- Probability and Risk Models
- Financial Risk and Volatility Modeling
- Diffusion and Search Dynamics
- Luminescence Properties of Advanced Materials
- Digital Radiography and Breast Imaging
- Morphological variations and asymmetry
- Particle Accelerators and Free-Electron Lasers
- Statistical Methods and Inference
- Radiation Therapy and Dosimetry
Université de Lille
2001-2024
Joint Institute for Nuclear Research
2015-2024
Laboratoire Paul Painlevé
1998-2024
St Petersburg University
2018-2024
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati
2021-2022
California Institute of Technology
2021-2022
Dubna State University
1994-2022
Istituto Nazionale di Fisica Nucleare, Sezione di Lecce
2021-2022
Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
2021-2022
Fermi National Accelerator Laboratory
2021
To study fundamental questions of hadron and nuclear physics in interactions antiprotons with nucleons nuclei, the universal PANDA detector will be built. Gluonic excitations, strange charm quarks nucleon structure studies performed unprecedented accuracy thereby allowing high-precision tests strong interaction. The proposed is a state-of-the art internal target at HESR FAIR detection identification neutral charged particles generated within relevant angular energy range. This report...
The Mu2e experiment at Fermilab will search for charged lepton flavor violation via the coherent conversion process mu- N --> e- with a sensitivity approximately four orders of magnitude better than current world's best limits this process. experiment's offers discovery potential over wide array new physics models and probes mass scales well beyond reach LHC. We describe herein preliminary design proposed experiment. This document was created in partial fulfillment requirements necessary to...
Lepton family number violation is tested by searching for $\mu^+\to e^+X^0$ decays among the 5.8$\times 10^8$ positive muon decay events analyzed TWIST collaboration. Limits are set on production of both massless and massive $X^0$ bosons. The large angular acceptance this experiment allows limits to be placed anisotropic decays, which can arise from interactions violating lepton flavor parity conservation. Branching ratio order $10^{-5}$ obtained bosons with masses 13 - 80 MeV/c$^2$...
The TWIST Collaboration has completed a new measurement of the energy-angle spectrum positrons from decay highly polarized muons. A simultaneous muon parameters ρ, δ, and P(μ)(π)ξ tests standard model in purely leptonic process provides improved limits for relevant extensions to model. Specifically, generalized left-right symmetric |(g(R)/g(L))ζ|<0.020 (g(L)/g(R))m(2)>578 GeV/c(2), both 90% C.L.
The TWIST Collaboration has measured the Michel parameter rho in normal muon decay, mu(+)--> e(+)nu(e)nu (mu). In standard model, = 3/4. Deviations from this value imply mixing of left- and right-handed electron couplings. We find rho=0.750 80+/-0.000 32(stat) +/- 0.000 97(syst) 23, where last uncertainty represents dependence on eta. This result sets new limits W(L)-W(R) angle left-right symmetric models.
We present a new high precision measurement of parity violation in the weak interaction, using polarized muon decay. The TWIST collaboration has measured $P_\mu^\pi \xi$, where $P_\mu^\pi$ is polarization pion decay and $\xi$ describes intrinsic asymmetry find \xi = 1.00084 \pm 0.00029\,(\textrm{stat.})_{-0.00063}^{+0.00165}\,(\textrm{syst.})$, good agreement with standard model prediction $P_\mu^\pi=\xi=1$. Our result factor 7 more precise than pre-TWIST value, setting limits left-right...
The TWIST Collaboration has completed its measurement of the three muon decay parameters \rho, \delta, and P_\mu\xi. This paper describes our determination which governs shape overall momentum spectrum, controls dependence parity-violating asymmetry. results are \rho=0.74977\pm 0.00012(stat.)\pm 0.00023(syst.) \delta = 0.75049\pm 0.00021(stat.)\pm 0.00027(syst.). These consistent with value 3/4 given for both in standard model, each is over a factor 10 more precise than measurements...
The muon decay parameter delta has been measured by the TWIST collaboration. We find = 0.74964 +- 0.00066(stat.) 0.00112(syst.), consistent with Standard Model value of 3/4. This result implies that product Pmuxi polarization in pion decay, Pmu, and xi falls within 90% confidence interval 0.9960 < 1.0040. It also implications for left-right-symmetric other extensions Model.
Abstract The SuperFGD detector will be a novel and important upgrade to the ND280 near for both T2K Hyper-Kamiokande projects. main goal of is reduce systematic uncertainties associated with neutrino flux cross-section modeling future studies oscillations using experiments. upgraded able perform full exclusive reconstruction final state from neutrino-nucleus interactions, including measurements low momentum protons, pions first time, event-by event neutron kinematics. Precisely understanding...
Photoelectron yields of extruded scintillation counters with titanium dioxide coating and embedded wavelength shifting fibers read out by silicon photomultipliers have been measured at the Fermilab Test Beam Facility using 120\,GeV protons. The were as a function transverse, longitudinal, angular positions for variety scintillator compositions reflective mixtures, fiber diameters, photosensor sizes. Timing performance was also studied. These studies carried Cosmic Ray Veto Group Mu2e...
The Mu2e experiment at Fermilab searches the neutrino-less conversion of muon into electron in field an Aluminum nucleus. If such a process will be observed, it proof charged-lepton-flavor-violation (cLFV), otherwise set upper limit Rμe < 6 × 10−17 @ 90% C.L. (which represents improvement by 3–4 order magnitude over existing limit). detector apparatus consists magnetic spectrometer, devoted to measurement electrons momentum, and electromagnetic calorimeter (EMC) which provides independent...
The TWIST Collaboration has performed new measurements of two the parameters that describe muon decay: $\ensuremath{\rho}$, which governs shape overall momentum spectrum, and $\ensuremath{\delta}$, dependence parity-violating decay asymmetry. This analysis gives results $\ensuremath{\rho}=0.750\text{ }14\ifmmode\pm\else\textpm\fi{}0.000\text{ }17(\mathrm{stat})\ifmmode\pm\else\textpm\fi{}0.000\text{ }44(\mathrm{syst})\ifmmode\pm\else\textpm\fi{}0.000\text{ }11(\ensuremath{\eta})$, where last...
The quantity P_{mu}^{pi}xi, where xi is one of the muon decay parameters and $P_{\mu}^{\pi}$ degree polarization in pion decay, has been measured. value P_{mu}^{pi}xi = 1.0003 +- 0.0006 stat. 0.0038 syst. was obtained. This result agrees with previous measurements but over a factor two more precise. It also Standard Model prediction for thus leads to restrictions on left-right symmetric models.
This paper describes the measurements of energy and time response resolution a 3 x array made undoped CsI crystals coupled to large area Hamamatsu Multi Pixel Photon Counters. The have been performed using electron beam Beam Test Facility in Frascati (Rome, Italy) range 80-120 MeV. measured resolution, estimated with FWHM, at 100 MeV is 16.4%. dominated by leakage due small dimensions prototype. reconstructed fitting leading edge digitized signals applying digital constant fraction...
The Mu2e experiment at Fermilab searches for the charged-lepton flavour violating (CLFV) conversion of a negative muon into an electron in field aluminum nucleus, with distinctive signature mono-energetic energy slightly below rest mass (104.967 MeV). goal is to improve by four orders magnitude search sensitivity respect previous experiments. Any observation CLFV signal will be clear indication new physics. detector composed tracker, electro- magnetic calorimeter and external veto cosmic...