A. Antonov
A5008439856- 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
- Radiation Detection and Scintillator Technologies
- Black Holes and Theoretical Physics
- VLSI and Analog Circuit Testing
- Mechanical and Optical Resonators
- Engineering and Test Systems
- Algorithms and Data Compression
- Astrophysics and Cosmic Phenomena
- Particle accelerators and beam dynamics
- Advancements in PLL and VCO Technologies
- Geophysics and Sensor Technology
- Laser Design and Applications
- GNSS positioning and interference
- Embedded Systems Design Techniques
- Indoor and Outdoor Localization Technologies
- Radio Wave Propagation Studies
- Medical Imaging Techniques and Applications
- Cosmology and Gravitation Theories
- Distributed and Parallel Computing Systems
Istituto Nazionale di Fisica Nucleare, Sezione di Genova
2024
Peter the Great St. Petersburg Polytechnic University
2020
National Research Nuclear University MEPhI
1998-2018
Moscow Institute of Physics and Technology
2018
The University of Adelaide
2016-2017
Institute of Engineering Physics
1998-2013
The jet energy scale (JES) and its systematic uncertainty are determined for jets measured with the ATLAS detector using proton–proton collision data a centre-of-mass of $$\sqrt{s}=7$$ TeV corresponding to an integrated luminosity $$4.7$$ $$\,\,\text{ fb }^{-1}$$ . Jets reconstructed from deposits forming topological clusters calorimeter cells anti- $$k_{t}$$ algorithm distance parameters $$R=0.4$$ or $$R=0.6$$ , calibrated MC simulations. A residual JES correction is applied account...
The results of a search for top squark (stop) pair production in final states with one isolated lepton, jets, and missing transverse momentum are reported. analysis is performed proton-proton collision data at $$ \sqrt{s} = 8 TeV collected the ATLAS detector LHC 2012 corresponding to an integrated luminosity 20 fb−1. lightest supersymmetric particle (LSP) taken be neutralino which only interacts weakly assumed stable. stop decay modes considered those quark LSP as well bottom chargino, where...
The results of a search for charged Higgs bosons decaying to τ lepton and neutrino, H ± → ν, are presented. analysis is based on 19.5 fb−1 proton-proton collision data at $$ \sqrt{s} = 8 TeV collected by the ATLAS experiment Large Hadron Collider. Charged searched in events consistent with top-quark pair production or associated top quark, depending considered mass. final state characterised presence hadronic decay, missing transverse momentum, b-tagged jets, hadronically W boson, absence...
The production of a W boson in association with single charm quark is studied using 4.6 fb^-1 pp collision data at sqrt(s)=7 TeV collected the ATLAS detector Large Hadron Collider. In events which decays to an electron or muon, tagged either by its semileptonic decay muon presence charmed meson. integrated and differential cross sections as function pseudorapidity lepton from W-boson are measured. Results compared predictions next-to-leading-order QCD calculations obtained various parton...
The ATLAS measurement of the inclusive top quark pair ( $$t\bar{t}$$ ) cross-section $$\sigma _{t\bar{t}}$$ in proton–proton collisions at $$\sqrt{s}=8$$ $$\,\mathrm{TeV}$$ has been updated using final 2012 luminosity calibration. result is: $$\begin{aligned} \sigma _{t\bar{t}}= 242.9\pm 1.7\pm 5.5\pm 5.1\pm 4.2\,\mathrm pb, \end{aligned}$$ where four uncertainties arise from data statistics, experimental and theoretical systematic effects, knowledge integrated LHC beam energy. is consistent...
This paper presents the method and performance of primary vertex reconstruction in proton-proton collision data recorded by ATLAS experiment during Run 1 LHC. The studies presented focus on taken 2012 at a centre-of-mass energy [Formula: see text] TeV. has been measured as function number interactions per bunch crossing over wide range, from one to seventy. measurement position size luminous region its use constraint improve resolution are discussed. A longitudinal about is achieved for...
Searches for pair-produced scalar leptoquarks are performed using 20 fb $$^{-1}$$ of proton–proton collision data provided by the LHC and recorded ATLAS detector at $$\sqrt{s}=8$$ TeV. Events with two electrons (muons) or more jets in final state used to search first (second)-generation leptoquarks. The results from previously published analyses interpreted terms third-generation decaying $$b\nu _{\tau }\bar{b}\bar{\nu }}$$ $$t\nu }\bar{t}\bar{\nu states. No statistically significant excess...
A search for the decay to a pair of new particles either 125 GeV Higgs boson ($h$) or second charge parity ($CP$)-even ($H$) is presented. The data set corresponds an integrated luminosity $20.3\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ $pp$ collisions at $\sqrt{s}=8\text{ }\mathrm{TeV}$ recorded by ATLAS experiment LHC in 2012. was done context next-to-minimal supersymmetric standard model, which are lightest neutral pseudoscalar bosons ($a$). One two $a$ required muons while other...
Measurements of longitudinal flow correlations are presented for charged particles in the pseudorapidity range
Measurements of the production cross section a [Formula: see text] boson in association with jets proton-proton collisions at TeV are presented, using data corresponding to an integrated luminosity 3.16 fb[Formula: collected by ATLAS experiment CERN Large Hadron Collider 2015. Inclusive and differential sections measured for events containing decaying electrons or muons produced up seven GeV text]. Predictions from different Monte Carlo generators based on leading-order next-to-leading-order...
This paper presents measurements from the ATLAS experiment of forward-backward asymmetry in reaction pp → Z/γ * l + −, with being electrons or muons, and extraction effective weak mixing angle. The results are based on full set data collected 2011 collisions at LHC $$ \sqrt{s}=7 TeV, corresponding to an integrated luminosity 4.8 fb−1. measured values found be agreement Standard Model predictions. combination muon electron channels yields a value angle sin2 θ eff lept = 0.2308 ± 0.0005(stat.)...
A search for neutral Higgs bosons of the minimal supersymmetric standard model (MSSM) and a heavneutral $$Z^{\prime }$$ boson is performed using data sample corresponding to an integrated luminosity 3.2 fb $$^{-1}$$ from proton–proton collisions at $$\sqrt{s} = 13$$ $${\mathrm {TeV}}$$ recorded by ATLAS detector LHC. The heavy resonance assumed decay $$\tau ^+ \tau ^-$$ pair with least one $$ lepton decaying final states hadrons neutrino. in mass range 0.2–1.2 MSSM 0.5–2.5 boson. are good...
A search is conducted for non-resonant new phenomena in dielectron and dimuon final states, originating from either contact interactions or large extra spatial dimensions. The LHC 2012 proton–proton collision dataset recorded by the ATLAS detector used, corresponding to 20 fb $$^{-1}$$ at $$\sqrt{s}$$ = 8 TeV. dilepton invariant mass spectrum a discriminating variable both searches, with interaction additionally utilizing forward-backward asymmetry. No significant deviations Standard Model...
A measurement of the top-antitop $$ \left(t\overline{t}\right) charge asymmetry is presented using data corresponding to an integrated luminosity 4.6 fb−1 LHC pp collisions at a centreof-mass energy 7 TeV collected by ATLAS detector. Events with two charged leptons, least jets and large missing transverse momentum are selected. Two observables studied: C based on identified {A}_{\mathrm{C}}^{t\overline{t}} , reconstructed tt final state. The asymmetries measured be {A}_{\mathrm{C}}^{\ell...
The $$ t\overline{t} production cross-section dependence on jet multiplicity and transverse momentum is reported for proton-proton collisions at a centre-of-mass energy of 7 TeV in the single-lepton channel. data were collected with ATLAS detector CERN Large Hadron Collider comprise full 2011 sample corresponding to an integrated luminosity 4.6 fb−1. Differential cross-sections are presented as function up eight jets using thresholds 25, 40, 60, 80 GeV, fifth jet. results shown after...
The results of a search for gluinos in final states with an isolated electron or muon, multiple jets and large missing transverse momentum using proton–proton collision data at centre-of-mass energy $$\sqrt{s} = 13 \mathrm{{\ Te V}}$$ are presented. dataset used was recorded 2015 by the ATLAS experiment Large Hadron Collider corresponds to integrated luminosity 3.2 fb $$^{-1}$$ . Six signal selections defined that best exploit characteristics. agree Standard Model background expectation all...
The production of a W boson decaying to eν or μν in association with Z two jets is studied using 4.6 fb−1 proton-proton collision data at $$ \sqrt{s}=7 TeV recorded the ATLAS detector LHC. combined WW + WZ cross section measured significance 3.4σ and found be 68±7 (stat.)±19 (syst.) pb, agreement Standard Model expectation 61.1±2.2 pb. distribution transverse momentum dijet system used set limits on anomalous contributions triple gauge coupling vertices parameters an effective-field-theory model.
A bstract The inclusion of an additional U(1) gauge L μ − τ symmetry would release the tension between measured and predicted value anomalous muon magnetic moment: this paradigm assumes existence a new, light Z ′ vector boson, with dominant coupling to leptons interacting electrons via loop mechanism. model can also explain Dark Matter relic abundance, by assuming that boson acts as “portal” new Sector particles in Nature, not charged under known interactions. In work we present results...
A measurement of event shape variables is presented for large momentum transfer proton-proton collisions using the ATLAS detector at Large Hadron Collider. Six calculated hadronic jets are studied in inclusive multi-jet events 35 pb^-1 integrated luminosity a center-of-mass energy sqrt(s) = 7 TeV. These measurements compared to predictions by three Monte Carlo generators containing leading-logarithmic parton showers matched leading order matrix elements 2 and n (n=2,...6) scattering....
A search is conducted for new physics in multijet final states using 3.6 inverse femtobarns of data from proton-proton collisions at $$ \sqrt{s}=13 TeV taken the CERN Large Hadron Collider with ATLAS detector. Events are selected containing least three jets scalar sum jet transverse momenta (H T) greater than 1 TeV. No excess seen large H T and limits presented on physics: models which produce having cross sections larger 1.6 fb > 5.8 excluded. Limits also given terms strong gravity that...
This article presents a search for flavour-changing neutral currents in the decay of top quark into an up-type ($q = c, u$) and Higgs boson, where boson decays two photons. The proton--proton collision data set analysed amounts to 36.1 fb$^{-1}$ at $\sqrt{s} 13$ TeV collected by ATLAS experiment LHC. Top pair events are searched for, one $qH$ other $bW$. Both hadronic leptonic modes $W$ used. No significant excess is observed upper limit on $t \rightarrow cH$ branching ratio $2.2\times...
A search for new particles that decay into top quark pairs ($t\overline{t}$) is performed with the ATLAS experiment at LHC using an integrated luminosity of $4.7\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ proton--proton ($pp$) collision data collected a center-of-mass energy $\sqrt{s}=7\text{ }\mathrm{TeV}$. In $t\overline{t}\ensuremath{\rightarrow}WbWb$ decay, lepton plus jets final state used, where one $W$ boson decays leptonically and other hadronically. The $t\overline{t}$ system...
The differential cross-section for the production of a $W$ boson in association with top quark is measured several particle-level observables. measurements are performed using 36.1 fb$^{-1}$ $pp$ collision data collected ATLAS detector at LHC 2015 and 2016. Differential cross-sections fiducial phase space defined by presence two charged leptons exactly one jet matched to $b$-hadron, normalised cross-section. Results found be good agreement predictions from Monte Carlo event generators.
We present the results of a missing-energy search for light dark matter which has new interaction with ordinary transmitted by vector boson, called photon <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:msup><a:mi>A</a:mi><a:mo>′</a:mo></a:msup></a:math>. For first time, this is performed positron beam using significantly enhanced production <c:math xmlns:c="http://www.w3.org/1998/Math/MathML" display="inline"><c:msup><c:mi>A</c:mi><c:mo>′</c:mo></c:msup></c:math> in...