A. Drutskoy
A5076665736- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Neutrino Physics Research
- Particle Accelerators and Free-Electron Lasers
- Building energy efficiency and sustainability
- Astrophysics and Cosmic Phenomena
- Particle Detector Development and Performance
- Renewable energy and sustainable power systems
- Cosmology and Gravitation Theories
- Cold Atom Physics and Bose-Einstein Condensates
- Gyrotron and Vacuum Electronics Research
- Electromagnetic Compatibility and Noise Suppression
- Nuclear physics research studies
- Electromagnetic Compatibility and Measurements
P.N. Lebedev Physical Institute of the Russian Academy of Sciences
2021-2025
Institute for Theoretical and Experimental Physics
2016-2021
University of Cincinnati
2007-2010
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 study potential contribution of the heavy right-handed neutrino exchange in process <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:msup><a:mi>e</a:mi><a:mo>+</a:mo></a:msup><a:msup><a:mi>e</a:mi><a:mo>−</a:mo></a:msup><a:mo stretchy="false">→</a:mo><a:msup><a:mi>W</a:mi><a:mo>+</a:mo></a:msup><a:msup><a:mi>W</a:mi><a:mo>−</a:mo></a:msup></a:math>. This is sensitive to neutrinos with masses larger than <d:math xmlns:d="http://www.w3.org/1998/Math/MathML"...
We study the production of exotic charged charmonium-like state $Z_c^{\pm}(3900)$ in $p \bar p$ collisions through sequential process $\psi(4260) \rightarrow Z_c^{\pm}(3900) \pi^{\mp}$, $Z_c^{\pm}(3900) J/\psi \pi^{\pm}$. Using subsample candidates originating from semi-inclusive weak decays $b$-flavored hadrons, we measure invariant mass and natural width to be $M=3902.6^{+5.2}_{-5.0}{\rm \thinspace (stat)}^{+3.3}_{-1.4}{\rm (syst)}$ MeV $\Gamma=32 ^{+28}_{-21}{\rm (stat)} ^{+26}_{-7}{\rm...
We present a measurement of the effective weak mixing angle parameter sin^{2}θ_{eff}^{ℓ} in pp[over ¯]→Z/γ^{*}→μ^{+}μ^{-} events at center-of-mass energy 1.96 TeV, collected by D0 detector Fermilab Tevatron Collider and corresponding to 8.6 fb^{-1} integrated luminosity. The measured value sin^{2}θ_{eff}^{ℓ}[μμ]=0.23016±0.00064 is further combined with result from ¯]→Z/γ^{*}→e^{+}e^{-} events, resulting sin^{2}θ_{eff}^{ℓ}[comb]=0.23095±0.00040. This most precise single experiment hadron...
We present a study of the normalized transverse momentum distribution $W$ bosons produced in $p \bar p$ collisions, using data corresponding to an integrated luminosity 4.35 fb$^{-1}$ collected with D0 detector at Fermilab Tevatron collider $\sqrt{s}=1.96$ TeV. The measurement focuses on region below 15 GeV, which is special interest for electroweak precision measurements; it relies same calibration methods were used boson mass. measured compared different QCD predictions and procedure given...
We present various properties of the production $X(3872)$ and $\ensuremath{\psi}(2S)$ states based on $10.4\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ collected by D0 experiment in Tevatron $p\overline{p}$ collisions at $\sqrt{s}=1.96\text{ }\mathrm{TeV}$. For both states, we measure nonprompt fraction ${f}_{NP}$ inclusive rate due to decays $b$-flavored hadrons. find values systematically below those obtained LHC. The for increases with transverse momentum, whereas it is constant...
We discuss the process $\ell^+\ell^- \to N W^{\pm} \ell^{\mp}$, where $N$ is a heavy Majorana neutrino and $\ell = e, \mu$. Large cross sections are expected for these processes at high center-of-mass energies, which can be reached future lepton-lepton colliders. The Monte Carlo simulation of studied produced within framework seesaw type-I model, neutrinos (or neutral leptons, HNL), introduced in standard leptonic sector. Recently possibility to search direct HNL production was \nu_{\ell}$...
Decays of the ϒ(5S) resonance to channels with B + and 0 mesons are studied using a 23.6 fb -1 data sample collected on Belle detector at KEKB asymmetric energy e -collider.The fully reconstructed → J/ψK , * D0 π D -π decays used obtain production rates per b event, f (B ) = (67.5 ± 3.6 4.8)% (70.4+5.2 -5.1 6.2)%.Assuming equal in all produced energy, we measure fractions for event transitions two-body multi-body +/0 meson pairs, B) (5.1±0.9±0.4) %, (12.6 +1.2 -1.1 1.0) (34.5 +1.9 -1.8 2.7)...
We report an improved measurement of B 0 → D + sJ K -decays using a data sample 357 fb -1 and studies s1 (2536The used in these analyses were collected by the Belle detector at KEKB asymmetric energy e -collider.We measure B(B * (2317 4.4 ± 0.8 0.6 1.1) × 10 -5 (2460) -)× B(D s γ) = (0.53 0.20 +0.16 -0.15 ) .The decay (2536) π -K is observed for first time.An angular analysis S performed.Semileptonic decays are studied global reconstruction method that provides very good resolution neutrino...
We report on studies of the ${e}^{+}{e}^{\ensuremath{-}}\ensuremath{\rightarrow}HZ$ process with subsequent decay Higgs boson $H\ensuremath{\rightarrow}Z{Z}^{\ensuremath{\star}}$, where $Z{Z}^{\ensuremath{\star}}$ combination is reconstructed in final states two jets and leptons. The analysis performed using Monte Carlo data samples obtained detailed ILD detector simulation assuming integrated luminosity $2\text{ }\text{ }{\mathrm{ab}}^{\ensuremath{-}1}$, beam polarizations...