M. Naskręt
A5032418558- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Quantum Chromodynamics and Particle Interactions
- Neutrino Physics Research
- Dark Matter and Cosmic Phenomena
- Particle accelerators and beam dynamics
- Astrophysics and Cosmic Phenomena
- Atomic and Subatomic Physics Research
- Statistical Mechanics and Entropy
- Nuclear physics research studies
- Advanced Welding Techniques Analysis
- Scientific Research and Discoveries
- Nuclear reactor physics and engineering
- Particle Detector Development and Performance
- Non-Destructive Testing Techniques
- Microstructure and Mechanical Properties of Steels
University of Wrocław
2016-2025
University of Bergen
2021
University of Hawaiʻi at Mānoa
2020
Stony Brook University
2018
Institute of Theoretical Physics
2018
University of Geneva
2017
European Organization for Nuclear Research
2015
Measurements of inclusive spectra and mean multiplicities $$\pi ^\pm $$ , K $$^\pm p $${\bar{\text {p}}}$$ produced in inelastic + interactions at incident projectile momenta 20, 31, 40, 80 158 $$\text{ GeV }/c$$ ( $$\sqrt{s} = 6.3, 7.7, 8.8, 12.3 17.3 }$$ respectively) were performed the CERN Super Proton Synchrotron using large acceptance NA61/SHINE hadron spectrometer. Spectra are presented as function rapidity transverse momentum compared to predictions current models. The measurements...
Measurements of hadron production in p + C interactions at 31 GeV/c are performed using the NA61/SHINE spectrometer CERN SPS. The analysis is based on full set data collected 2009 a graphite target with thickness 4 % nuclear interaction length. Inelastic and cross sections as well spectra $$\pi ^{\pm }$$ , $$K^{\pm p, $$K^0_S$$ $$\varLambda $$ measured high precision. These measurements essential for improved calculations initial neutrino fluxes T2K long-baseline oscillation experiment...
The precise measurement of cosmic-ray antinuclei serves as an important means for identifying the nature dark matter and other new astrophysical phenomena, could be used with species to understand production propagation in Galaxy. For instance, low-energy antideuterons would provide a "smoking gun" signature annihilation or decay, essentially free background. Studies recent years have emphasized that models must considered together abundant cosmic antiprotons any potential observation...
Measurements of multiplicity and transverse momentum fluctuations charged particles were performed in inelastic p+p interactions at 20, 31, 40, 80, 158 $$\text{ GeV }\!/\!c$$ beam momentum. Results for the scaled variance distribution three strongly intensive measures $$\varDelta [P_{T},N]$$ , $$\varSigma $$\varPhi _{p_T}$$ are presented. For first time results on fully corrected experimental biases. The significantly deviate from expectations independent particle production. They also...
Abstract The NA61/SHINE experiment at the CERN Super Proton Synchrotron studies onset of deconfinement in strongly interacting matter through a beam energy scan particle production collisions nuclei varied sizes. This paper presents results on inclusive double-differential spectra, transverse momentum and rapidity distributions mean multiplicities $$\pi ^\pm $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msup> <mml:mi>π</mml:mi> <mml:mo>±</mml:mo> </mml:msup> </mml:math> ,...
Strong interactions preserve an approximate isospin symmetry between up (u) and down (d) quarks, part of the more general flavor symmetry. In case K meson production, if this were exact, it would result in equal numbers charged (K+ K−) neutral (K0 $${\overline{K}}^{0}$$ ) mesons produced collisions isospin-symmetric atomic nuclei. Here, we report results on relative abundance over production argon scandium nuclei at a center-of-mass energy 11.9 GeV per nucleon pair. We find that K+ K−...
Measurements of particle emission from a replica the T2K 90 cm-long carbon target were performed in NA61/SHINE experiment at CERN SPS, using data collected during high-statistics run 2009. An efficient use long-target measurements for neutrino flux predictions requires dedicated reconstruction and analysis techniques. Fully-corrected differential yields $$\pi ^\pm $$ -mesons surface incoming 31 GeV/c protons are presented. A possible strategy to implement these results into beam is discussed...
Measurements of the $\pi^{\pm}$, $K^{\pm}$, and proton double differential yields emitted from surface 90-cm-long carbon target (T2K replica) were performed for incoming 31 GeV/c protons with NA61/SHINE spectrometer at CERN SPS using data collected during 2010 run. The $\pi^{\pm}$ measured increased precision compared to previously published results, while $K^{\pm}$ obtained first time. A strategy dealing dependence results on beam profile is proposed. purpose these measurements reduce...
Abstract This paper reports measurements of two-pion femtoscopic correlations in Be+Be collisions at a beam momentum 150 $$A\,\hbox {GeV}\!/\!c$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>A</mml:mi> <mml:mspace /> <mml:mtext>GeV</mml:mtext> <mml:mo>/</mml:mo> <mml:mi>c</mml:mi> </mml:mrow> </mml:math> (energy available the center-of-mass system for nucleon pair $$\sqrt{s_{\text {NN}}} = 16.84$$ <mml:msqrt> <mml:msub> <mml:mi>s</mml:mi>...
We present a measurement of the momentum spectra ${\ensuremath{\pi}}^{\ifmmode\pm\else\textpm\fi{}}$, ${\mathrm{K}}^{\ifmmode\pm\else\textpm\fi{}}$, ${\mathrm{p}}^{\ifmmode\pm\else\textpm\fi{}}$, $\mathrm{\ensuremath{\Lambda}}$, $\overline{\mathrm{\ensuremath{\Lambda}}}$, and ${\mathrm{K}}_{\mathrm{S}}^{0}$ produced in interactions negatively charged pions with carbon nuclei at beam momenta 158 $350\text{ }\text{ }\mathrm{GeV}/c$. The total production cross sections are measured as well....
Abstract The critical point of strongly interacting matter is searched for at the CERN SPS by NA61/SHINE experiment in central $$^{40}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mmultiscripts> <mml:mrow/> <mml:mn>40</mml:mn> </mml:mmultiscripts> </mml:math> Ar + $$^{45}$$ <mml:mn>45</mml:mn> Sc collisions 13 A , 19 30 40 and 75 GeV/ c . dependence second-order scaled factorial moments proton multiplicity distributions on number subdivisions transverse momentum space...
Inclusive production of $Λ$-hyperons was measured with the large acceptance NA61/SHINE spectrometer at CERN SPS in inelastic p+p interactions beam momentum 158~\GeVc. Spectra transverse and mass as well distributions rapidity x$_{_F}$ are presented. The mean multiplicity estimated to be $0.120\,\pm0.006\;(stat.)\,\pm 0.010\;(sys.)$. results compared previous measurements predictions EPOS, UrQMD FRITIOF models.
Abstract The NA61/SHINE experiment at the CERN Super Proton Synchrotron (SPS) studies onset of deconfinement in hadron matter by a scan particle production collisions nuclei with various sizes set energies covering SPS energy range. This paper presents results on inclusive double-differential spectra, transverse momentum and rapidity distributions mean multiplicities $$\pi ^\pm $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msup> <mml:mi>π</mml:mi> <mml:mo>±</mml:mo>...
The production of $K^{0}_{S}$ mesons in inelastic $\textit{p+p}$ collisions at beam momentum 158 GeV/c ($\sqrt{s_{NN}}=17.3$ GeV) was measured with the NA61/SHINE spectrometer CERN Super Proton Synchrotron. Double-differential distributions were obtained transverse and rapidity. mean multiplicity determined to be $0.162 \pm 0.001 (stat.) 0.011 (sys.)$. results on are compared model predictions (EPOS 1.99, SMASH 2.0, PHSD UrQMD 3.4 models) as well published world data.
Abstract The physics goal of the strong interaction program NA61/SHINE experiment at CERN Super Proton Synchrotron (SPS) is to study phase diagram hadronic matter by a scan particle production in collisions nuclei with various sizes set energies covering SPS energy range. This paper presents differential inclusive spectra transverse momentum, mass and rapidity $$\pi ^{-}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msup> <mml:mi>π</mml:mi> <mml:mo>-</mml:mo> </mml:msup>...
This paper presents multiplicity measurements of ${K}_{\mathrm{S}}^{0}$, $\mathrm{\ensuremath{\Lambda}}$, and $\overline{\mathrm{\ensuremath{\Lambda}}}$ produced in $120\text{ }\text{ }\mathrm{GeV}/c$ proton-carbon interactions. The were made using data collected at the NA61/SHINE experiment during two different periods. Decays these neutral hadrons impact measured ${\ensuremath{\pi}}^{+}$, ${\ensuremath{\pi}}^{\ensuremath{-}}$, $p$ $\overline{p}$ multiplicities reaction, which are crucial...
We present measurements of $$\rho ^0$$ , $$\omega $$ and K $$^{*0}$$ spectra in $$\pi ^{-} + C production interactions at 158 $$\text{ GeV }{/}\text{ c }$$ 350 using the NA61/SHINE spectrometer CERN SPS. Spectra are presented as a function Feynman's variable $$x_\text {F}$$ range $$0< x_\text {F} < 1$$ 0.5$$ for respectively. Furthermore, we show comparisons with previous predictions several hadronic interaction models. These essential better understanding shower development improving...
This paper presents measurements of production cross sections and inelastic for the following reactions: $60\text{ }\text{ }\mathrm{GeV}/c$ protons with C, Be, Al targets $120\text{ C Be targets. The analysis is performed using NA61/SHINE spectrometer at CERN Super Proton Synchrotron. First are obtained }\mathrm{GeV}/c$, while results compared previously published measurements. These interaction section critical inputs neutrino flux prediction in current future accelerator-based...
Abstract Results on $$\phi $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>ϕ</mml:mi></mml:math> meson production in inelastic $$p + p$$ xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>p</mml:mi><mml:mo>+</mml:mo><mml:mi>p</mml:mi></mml:mrow></mml:math> collisions at CERN SPS energies are presented. They derived from data collected by the NA61/SHINE fixed target experiment, means of invariant mass spectra fits \rightarrow K^+ K^-...
Abstract The NA61/SHINE collaboration studies at the CERN Super Proton Synchrotron (SPS) onset of deconfinement in hadronic matter by measurement particle production collisions nuclei with various sizes a set energies covering SPS energy range. This paper presents results on inclusive double-differential spectra and mean multiplicities $$\pi ^{-}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msup><mml:mi>π</mml:mi><mml:mo>-</mml:mo></mml:msup></mml:math> mesons produced 5%...
Abstract The production of $$\Xi (1321)^{-}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>Ξ</mml:mi> <mml:msup> <mml:mo>(</mml:mo> <mml:mn>1321</mml:mn> <mml:mo>)</mml:mo> </mml:mrow> <mml:mo>-</mml:mo> </mml:msup> </mml:math> and $$\overline{\Xi }(1321)^{+}$$ <mml:mover> <mml:mo>¯</mml:mo> </mml:mover> <mml:mo>+</mml:mo> hyperons in inelastic p+p interactions is studied a fixed target experiment at beam momentum 158 $$\hbox {Ge}\hbox {V}\!/\!c$$...
This paper presents several measurements of total production cross sections and inelastic for the following reactions: ${\ensuremath{\pi}}^{+}+\mathrm{C}$, ${\ensuremath{\pi}}^{+}+\mathrm{Al}$, ${K}^{+}+\mathrm{C}$, ${K}^{+}+\mathrm{Al}$ at $60\text{ }\text{ }\mathrm{GeV}/c$, ${\ensuremath{\pi}}^{+}+\mathrm{C}$ ${\ensuremath{\pi}}^{+}+\mathrm{Al}$ $31\text{ }\mathrm{GeV}/c$. The were made using NA61/SPS Heavy Ion Neutrino Experiment spectrometer CERN Super Proton Synchrotron (SPS)....
Measurements of $K^{*}(892)^0$ resonance production via its $K^{+}\pi^{-}$ decay mode in inelastic $p+p$ collisions at beam momenta 40 and 80 GeV/$c$ ($\sqrt{s_{NN}}=8.8$ 12.3 GeV) are presented. The data were recorded by the NA61/SHINE hadron spectrometer CERN Super Proton Synchrotron. \textit{template} method was used to extract signal. Transverse momentum rapidity spectra obtained. mean multiplicities mesons found be $(35.1 \pm 1.3 \mathrm{(stat)} 3.6 \mathrm{(sys)) \cdot 10^{-3}}$ $(58.3...