M. Jurković
A5031854594- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Quantum Chromodynamics and Particle Interactions
- Astrophysics and Cosmic Phenomena
- Neutrino Physics Research
- Dark Matter and Cosmic Phenomena
- Stellar, planetary, and galactic studies
- Particle Detector Development and Performance
- Astronomy and Astrophysical Research
- Astrophysics and Star Formation Studies
- Astro and Planetary Science
- Nuclear physics research studies
- Gamma-ray bursts and supernovae
- Nuclear Physics and Applications
- Radiation Detection and Scintillator Technologies
- Astronomical Observations and Instrumentation
- Radio Astronomy Observations and Technology
- X-ray Spectroscopy and Fluorescence Analysis
- Astrophysical Phenomena and Observations
- Pulsars and Gravitational Waves Research
- Advanced Data Storage Technologies
- Technology Assessment and Management
- History and Developments in Astronomy
- Particle accelerators and beam dynamics
- CCD and CMOS Imaging Sensors
Astronomical Observatory
2013-2024
University of Belgrade
2024
Konkoly Observatory
2016-2022
Research Centre for Astronomy and Earth Sciences
2016-2021
Slovak Academy of Sciences
2003-2018
Hungarian Academy of Sciences
2017-2018
Institute of Physics of the Slovak Academy of Sciences
2018
Technical University of Munich
2008-2017
Johannes Gutenberg University Mainz
2016-2017
Goddard Space Flight Center
2014
We present phase space distributions and multiplicities of K+, K−, ϕ mesons produced in Ar+KCl reactions at a kinetic beam energy 1.756 GeV/nucleon measured with the HADES spectrometer. The inverse slope parameters yields kaons supplement systematics previous measurements. percentage K− coming from decay is found to be 18±7%.6 MoreReceived 9 March 2009DOI:https://doi.org/10.1103/PhysRevC.80.025209©2009 American Physical Society
We present transverse momentum spectra, rapidity distribution and multiplicity of $ \Lambda$ -hyperons measured with the HADES spectrometer in reaction Ar(1.76AGeV) + KCl . The yield \Xi^{{-}}_{}$ is calculated from our previously reported /( \Sigma^{{0}}_{}$ ) ratio compared to other strange particle multiplicities. Employing a strangeness balance equation multiplicities yet unmeasured \Sigma^{{\pm}}_{}$ can be estimated. Finally statistical hadronization model used fit yields \pi^{-}_{}$ ,...
We report first results on a deep subthreshold production of the doubly strange hyperon Xi;{-} in heavy-ion reaction. At beam energy 1.76A GeV reaction Ar + KCl was studied with High Acceptance Di-Electron Spectrometer at SIS18/GSI. A high-statistics and high-purity Lambda sample collected, allowing for investigation decay channel --> Lambdapi;{-}. The deduced Xi;{-}/(Lambda Sigma;{0}) ratio (5.6 +/- 1.2_{-1.7};{+1.8}) x 10;{-3} is significantly larger than available model predictions.
We present a search for the e+e− decay of hypothetical dark photon, also named U vector boson, in inclusive dielectron spectra measured by HADES p(3.5 GeV) + p, Nb reactions, as well Ar (1.756 GeV/u) KCl reaction. An upper limit on kinetic mixing parameter squared ϵ2 at 90% CL has been obtained mass range MU=0.02–0.55 GeV/c2 and is compared with world data set. For masses 0.03–0.1 GeV/c2, lowered respect to previous results, allowing now exclude large part region favored muon g−2 anomaly....
Employing the Bonn–Gatchina partial wave analysis framework (PWA), we have analyzed HADES data of reaction p(3.5GeV)+p→pK+Λ. This might contain information about kaonic cluster "ppK−" (with quantum numbers JP=0− and total isospin I=1/2) via its decay into pΛ. Due to interference effects in our coherent description data, a hypothetical K‾NN (or, specifically "ppK−") signal need not necessarily show up as pronounced feature (e.g. peak) an invariant mass spectrum like Our PWA includes variety...
The invariant-mass spectrum of $e^+ e^-$ pairs produced in $^{12}$C+$^{12}$C collisions at an incident energy 2 GeV per nucleon has been measured for the first time. pair production probabilities span over five orders magnitude from $\pi^0$-Dalitz to $\rho/\omega$ region. Dalitz decays $\pi^0$ and $\eta$ account all yield up 0.15 GeV/c$^2$, but only about 50% above this mass. A comparison with model calculations shows that excess is likely due baryon-resonance vector-meson decays. Transport...
We present the transverse momentum spectra and rapidity distributions of ${\ensuremath{\pi}}^{\ensuremath{-}}$ ${\mathrm{K}}_{S}^{0}$ in Ar $+$ KCl reactions at a beam kinetic energy $1.756$ $A$ GeV measured with High Acceptance Di-Electron Spectrometer (HADES). The reconstructed sample is characterized by good event statistics for wide range rapidity. compare experimental to predictions Isospin Quantum Molecular Dynamics (IQMD) model. model calculations show that low momenta constitute...
We report measurements of electron pair production in elementary p+p and d+p reactions at 1.25 GeV/u with the HADES spectrometer. For first time, pairs were reconstructed for n+p by detecting proton spectator from deuteron breakup. find that yield invariant mass Me+e- > 0.15 GeV/c2 is about an order magnitude larger as compared to p+p. A comparison model calculations demonstrates mechanism not sufficiently described yet. The spectra measured C+C are compatible a superposition collisions,...
We present results on dielectron production in ${}^{40}\mathrm{Ar}+\mathrm{KCl}$ collisions at 1.76$A$ GeV. For the first time $\ensuremath{\omega}$ mesons could be reconstructed a heavy-ion reaction bombarding energy which is well below threshold free nucleon-nucleon collisions. The multiplicity has been extracted and compared to yields of other particles, particular $\ensuremath{\varphi}$ meson. At intermediate ${e}^{+}{e}^{\ensuremath{-}}$ invariant masses, we find strong enhancement pair...
We present the inclusive invariant-mass, transverse momentum and rapidity distributions of dielectrons (e$^{+}$e$^{-}$ pairs) in p+p interactions at 3.5 GeV beam kinetic energy. In vector-meson mass region, a distinct peak corresponding to direct $\omega$ decays is reconstructed with 2% resolution. The data compared predictions from three model calculations. Due large acceptance HADES apparatus for $e^{+}e^{-}$ invariant masses above 0.2 GeV/$c^{2}$ pair momenta p$_{t}$ $ <$ 1 GeV/$c$,...
Abstract We present the first analysis of Cepheid stars observed by TESS space mission in Sectors 1–5. Our sample consists 25 pulsators: ten fundamental mode, three overtone and two double-mode classical Cepheids, plus type II seven anomalous Cepheids. The targets were chosen from fields with different stellar densities, both Galactic field Magellanic System. Three have 2 minutes cadence light curves available Science Processing Operations Center: for rest, we prepared custom full-frame...
We present results of an exclusive measurement the first-excited state $\ensuremath{\Sigma}$ hyperon, $\ensuremath{\Sigma}{(1385)}^{+}$, produced in $p+p\ensuremath{\rightarrow}{\ensuremath{\Sigma}}^{+}+{K}^{+}+n$ at $3.5\phantom{\rule{0.28em}{0ex}}\mathrm{GeV}$ beam energy. The extracted data allow detailed study invariant mass distribution $\ensuremath{\Sigma}{(1385)}^{+}$. is well described by a relativistic Breit-Wigner function with maximum...
We report on baryon resonance production and decay in proton-proton collisions at a kinetic energy of 3.5 GeV based data measured with HADES. The exclusive channels $ pp \rightarrow np\pi^{+}$ pp\rightarrow pp\pi^{0}$ as well ppe^{+}e^{-}$ are studied simultaneously for the first time. invariant masses angular distributions pion-nucleon systems were compared to simulations model ansatz assuming saturation pion by an incoherent sum baryonic resonances (R < 2 GeV/c2. A very good description...
Context. Type II Cepheids (T2Cs) and anomalous (ACs) are pulsating stars that follow separate period-luminosity relations.
We present the analysis of inclusive ${K}^{0}$ production in $p+p$ and $p+\mathrm{Nb}$ collisions measured with HADES detector (GSI Helmholtzzentrum for Heavy-Ion Research, Darmstadt) at a beam kinetic energy 3.5 GeV. Data are compared to Giessen Boltzmann-Uehling-Uhlenbeck (GiBUU) transport model. The data suggest presence repulsive momentum-dependent kaon potential as predicted by chiral perturbation theory (ChPT). For rest normal nuclear density, ChPT amounts $\ensuremath{\approx}35$ MeV....
The tagged quasi-free np→npπ+π− reaction has been studied experimentally with the High Acceptance Di-Electron Spectrometer (HADES) at GSI a deuteron incident beam energy of 1.25 GeV/nucleon (s∼2.42 GeV/c for collision). For first time, differential distributions solid statistics π+π− production in np collisions have collected region corresponding to large transverse momenta secondary particles. invariant mass and angular are compared different models. This comparison confirms dominance...
We report on the first measurement of $p\mathrm{\ensuremath{\Lambda}}$ and $pp$ correlations via femtoscopy method in $p$ + Nb reactions at $\sqrt{{s}_{\mathit{NN}}}=3.18\phantom{\rule{0.28em}{0ex}}\mathrm{GeV}$, studied with High Acceptance Di-Electron Spectrometer (HADES). By comparing experimental correlation function to model calculations, a source size for pairs...
Data on inclusive dielectron production are presented for the reaction p+p at 2.2 GeV measured with High Acceptance DiElectron Spectrometer (HADES). Our results supplement data obtained earlier in this bombarding energy regime by DLS and HADES. The comparison 2.09 is discussed. reconstructed e+e- distributions confronted simulated pair cocktails, revealing an excess yield invariant masses around 0.5 GeV/c2. Inclusive cross sections of neutral pion eta obtained.
Results on the production of double strange cascade hyperon Ξ^{-} are reported for collisions p(3.5 GeV)+Nb, studied with High Acceptance Di-Electron Spectrometer (HADES) at SIS18 GSI Helmholtzzentrum Heavy-Ion Research, Darmstadt. For first time, subthreshold is observed in proton-nucleus interactions. Assuming a phase-space distribution similar to that Λ hyperons, probability amounts P_{Ξ^{-}}=[2.0±0.4(stat)±0.3(norm)±0.6(syst)]×10^{-4} resulting Ξ^{-}/(Λ+Σ^{0}) ratio...
(abridged) Type II and anomalous Cepheids (ACs) are useful distance indicators when there too few classical or RR Lyrae stars faint. We study the sample of 335 ACs in Small Large MCls detected OGLE-III data.The SEDs constructed fitted with a dust radiative transfer model, thereby leading to determination luminosity effective temperature.In addition, subsample targets is investigated for possible binarity by looking light-time travel effect (LITE). Hertzsprung-Russell diagrams (HRD) compared...
We present the first analysis of W Vir stars observed by Kepler space telescope in K2 mission. Clear cycle-to-cycle variation were detected light curves KT Sco and globular cluster member M80-V1. While variations former star seems to be irregular on short time scale data, latter appears experience period doubling its pulsation. Ground-based colour data confirmed that both are Vir-type pulsators, while a comparison with historical photometric time-series revealed drastic changes stars. For we...