E. Gushchin
A5108167028- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Neutrino Physics Research
- Dark Matter and Cosmic Phenomena
- Particle Detector Development and Performance
- Computational Physics and Python Applications
- Black Holes and Theoretical Physics
- Particle Accelerators and Free-Electron Lasers
- Medical Imaging Techniques and Applications
- Atomic and Subatomic Physics Research
- Superconducting Materials and Applications
- Nuclear physics research studies
- Radiation Detection and Scintillator Technologies
- Stochastic processes and statistical mechanics
- Cosmology and Gravitation Theories
- Astrophysics and Cosmic Phenomena
- International Science and Diplomacy
- Distributed and Parallel Computing Systems
- Particle accelerators and beam dynamics
- Advanced NMR Techniques and Applications
- Radioactive Decay and Measurement Techniques
- Pulsars and Gravitational Waves Research
- Nuclear Physics and Applications
- Cold Atom Physics and Bose-Einstein Condensates
European Organization for Nuclear Research
2013-2025
Istituto Nazionale di Fisica Nucleare, Sezione di Cagliari
2023-2024
Istituto Nazionale di Fisica Nucleare, Sezione di Bologna
2023-2024
Institute for Nuclear Research
2015-2024
Centre National de la Recherche Scientifique
2011-2024
Roma Tre University
2024
Aix-Marseille Université
2011-2024
University of Padua
2023-2024
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati
2017-2024
Istituto Nazionale di Fisica Nucleare, Sezione di Milano Bicocca
2024
A precision measurement of the ratio RK rates kaon leptonic decays K±→e±ν and K±→μ±ν with full data sample collected by NA62 experiment at CERN in 2007–2008 is reported. The result, obtained analysing ∼150000 reconstructed candidates 11% background contamination, RK=(2.488±0.010)×10−5, agreement Standard Model expectation.
The NA62 experiment at CERN SPS is designed to study the $K^+\to\pi^+\nu\bar\nu$ decay. After collecting data in 2016, 2017, and 2018, has resumed taking 2021 received approval for operations until onset of LS3. first search lepton number violating decay $K^+\to\pi^0\pi^-\mu^+ e^+$ flavour decays $K^+\to\pi^0\pi^+\mu^+ e^-$ , $K^+\to\pi^0\pi^+\mu^- reported. More recent results from analyses $K^+\to\pi^+\gamma\gamma$ $\pi^0\to e^+e^-$ are also Additionally, New Physics collected during...
A study of the dynamics rare decay K±→π±γγ has been performed on a sample 232 candidates, with an estimated background 17.4±1.1 events, collected by NA62 experiment at CERN in 2007. The results are combined those from measurement conducted NA48/2 Collaboration CERN. model-independent branching ratio kinematic range z=(mγγ/mK)2>0.2 is BMI(z>0.2)=(0.965±0.063)×10−6, and full assuming Chiral Perturbation Theory description B(Kπγγ)=(1.003±0.056)×10−6. detailed comparison previous measurements performed.
The NA62 experiment recorded a large sample of $K^+ \rightarrow μ^+ ν_μ$ decays in 2007. A peak search has been performed the reconstructed missing mass spectrum. In absence signal, limits range $2 \times 10^{-6}$ to $10^{-5}$ have set on squared mixing matrix element $|U_{\mu4} |^2$ between muon and heavy neutrino states, for masses 300-375 MeV/$c^2$. result extends which upper value previous production experiments.
A precision test of lepton flavour universality has been performed by measuring the ratio RK kaon leptonic decay rates K+ --> e+nu and mu+nu in a sample 59813 reconstructed candidates with (8.71 +- 0.24)% background contamination. The result = (2.487 0.013) * 10^{-5} is agreement Standard Model expectation.
The NA62 experiment collected a large sample of charged kaon decays in 2007 with highly efficient trigger for into electrons. A measurement the $\pi^0$ electromagnetic transition form factor slope parameter from $1.11\times10^{6}$ fully reconstructed $K^\pm \to \pi^\pm \pi^0_D, \pi^0_D e^+ e^-\gamma$ events is reported. measured value $a = (3.68 \pm 0.57)\times10^{-2}$ good agreement theoretical expectations and previous measurements, represents most precise experimental determination...
Searches for the lepton number violating ${K}^{+}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{\ensuremath{-}}{\ensuremath{\mu}}^{+}{e}^{+}$ decay and flavor ${K}^{+}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{+}{\ensuremath{\mu}}^{\ensuremath{-}}{e}^{+}$ ${\ensuremath{\pi}}^{0}\ensuremath{\rightarrow}{\ensuremath{\mu}}^{\ensuremath{-}}{e}^{+}$ decays are reported using data collected by NA62 experiment at CERN in 2017--2018. No evidence these is found upper limits of branching ratios obtained...
The calibration and performance of the LHCb Calorimeter system in Run 1 2 at LHC are described. After a brief description sub-detectors their role trigger, methods used for each part reviewed. changes which occurred with increase beam energy explained. performances calorimetry $\gamma$ $\pi^0$ detailed. A few results from collisions recorded $\sqrt {s}$ = 7, 8 13 TeV shown.
A high statistics data sample of the $$K^{+}\rightarrow \mu ^{+}\nu _{\mu }$$ decay was accumulated by OKA experiment in 2012. The missing mass analysis performed to search for channel _{H}$$ with a hypothetic stable heavy neutrino final state. obtained spectrum does not show peaks that could be attributed existence neutrinos range $$(270< m_{\nu _{H}} < 375)$$ MeV $$/c^{2}$$ . As result, upper limits on branching ratio and value mixing element $$|U_{\mu H}|^{2}$$ are obtained.
Results of a study the $K^+ \rightarrow \pi^{0} e^{+} \nu \gamma $ decay at OKA setup are presented. More than 32000 events this observed. The differential spectra over photon energy and photon-electron opening angle in kaon rest frame branching ratios, normalized to that $K_{e3}$ calculated for different cuts $E^*_\gamma$ $cos\Theta^{*}_{e\gamma}$. In particular, ratio $E^{*}_{\gamma}>30$ MeV $\Theta^{*}_{e \gamma}>20^{\circ}$ is measured R = $\frac{Br(K^+ \nu_{e} \gamma) } {Br(K^+...
A precise measurement of the vector and axial-vector form factors difference $F_V-F_A$ in $K^+\rightarrow{\mu^+}{\nu_{\mu}}{\gamma}$ decay is presented. About 95K events are selected OKA experiment. The result $F_V-F_A=0.134\pm0.021(stat)\pm0.027(syst)$. Both errors smaller than previous measurements.
The article analyses the current status of Belt and Road Initiative (BRI), its key achievements challenges, including those related to COVID 19 pandemic. In 2010s China has become one world’s largest investors BRI is most important tools Chinese investment policy. Due flexible structure, been able adjust develop in context U.S. – trade war growing anti-Chinese sentiment world that included concerns over so called China’s debt diplomacy. But this lack rigidity also a challenge who study...
LHCb is the experiment at Large Hadron Collider CERN designed for performing studies of CP-symmetry violation and rare decays B-hadrons. Its calorimeter system allows to trigger on photons electrons by associating information from a scintillating pad signing charged particle (SPD), pre-shower tagging electromagnetic particles (PS), an (ECAL) hadronic (HCAL). We present principles procedures fine time-alignment throughout commissioning first collision phases. give particular emphasis choices...
The first measurement of the branching ratio ultra-rare $K^+ \to \pi^+\nu\bar\nu$ decay and searches for production feebly interacting particles predicted by dark scalar models from NA62 experiment at CERN are presented. results a search in-flight decays photon to $\ell^+\ell^-$ pairs with data collected in beam-dump mode 2021 also reported.