Antoni Szczurek
A5077875634- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Nuclear physics research studies
- Atomic and Molecular Physics
- Cosmology and Gravitation Theories
- Nuclear Physics and Applications
- Black Holes and Theoretical Physics
- Particle Detector Development and Performance
- Dark Matter and Cosmic Phenomena
- Astronomical and nuclear sciences
- Astrophysics and Cosmic Phenomena
- Superconducting Materials and Applications
- Computational Physics and Python Applications
- Advanced NMR Techniques and Applications
- Atomic and Subatomic Physics Research
- Particle Accelerators and Free-Electron Lasers
- Medical Imaging Techniques and Applications
- X-ray Spectroscopy and Fluorescence Analysis
- Quantum, superfluid, helium dynamics
- Cold Atom Physics and Bose-Einstein Condensates
- Neutrino Physics Research
- Pulsars and Gravitational Waves Research
- Radiation Detection and Scintillator Technologies
- Quantum chaos and dynamical systems
Rzeszów University
2016-2025
Institute of Nuclear Physics
2015-2025
Institute of Nuclear Physics, Polish Academy of Sciences
2015-2024
Institute of Physics
1990-2024
Czech Academy of Sciences, Institute of Physics
2022-2024
University of Glasgow
2022
University of Delhi
2014-2022
AGH University of Krakow
2022
Johannes Gutenberg University Mainz
2014-2022
European Organization for Nuclear Research
1996-2022
The Forward Physics Facility (FPF) is a proposal to create cavern with the space and infrastructure support suite of far-forward experiments at Large Hadron Collider during High Luminosity era. Located along beam collision axis shielded from interaction point by least 100 m concrete rock, FPF will house that detect particles outside acceptance existing large LHC observe rare exotic processes in an extremely low-background environment. In this work, we summarize current status plans for FPF,...
Exclusive and kinematically complete high-statistics measurements of quasifree polarized $\stackrel{\ensuremath{\rightarrow}}{n}p$ scattering have been performed in the energy region narrow resonancelike structure ${d}^{*}$ with $I({J}^{P})=0({3}^{+})$, $M\ensuremath{\approx}2380\text{ }\text{ }\mathrm{MeV}$, $\mathrm{\ensuremath{\Gamma}}\ensuremath{\approx}70\text{ }\mathrm{MeV}$ observed recently double-pionic fusion channels...
We discuss inclusive production of open charm in proton-proton scattering at LHC. The calculation is performed within the ${k}_{t}$-factorization approach. Different models unintegrated gluon distributions (UGDFs) from literature are used. theoretical transverse momentum as well (pseudo)rapidity charmed mesons compared with recent experimental data ATLAS, ALICE, and LHCb Collaborations. Only Kimber-Martin-Ryskin UGDF gives results comparable to ones. All other popular significantly...
We discuss production of far-forward charm and anticharm quarks, $D$ mesons antimesons, neutrinos antineutrinos from their semileptonic decays in proton-proton collisions at the LHC energies. include gluon-gluon fusion $gg\ensuremath{\rightarrow}c\overline{c}$, intrinsic (IC) $gc\ensuremath{\rightarrow}gc$ as well recombination $gq\ensuremath{\rightarrow}Dc$ partonic mechanisms. The calculations are performed within ${k}_{T}$-factorization approach hybrid model using different unintegrated...
This document describes the technical layout and expected performance of Straw Tube Tracker (STT), main tracking detector $\overline{P}$ ANDA target spectrometer. The STT encloses a Micro-Vertex-Detector (MVD) for inner is followed in beam direction by set GEM stations. tasks are measurement particle momentum from reconstructed trajectory specific energy loss identification. Dedicated simulations with full analysis studies certain proton-antiproton reactions, identified as being benchmark...
Exclusive measurements of the quasifree $pn\ensuremath{\rightarrow}pp{\ensuremath{\pi}}^{0}{\ensuremath{\pi}}^{\ensuremath{-}}$ reaction have been performed by means $pd$ collisions at ${T}_{p}$ $=$ 1.2 GeV using wide angle shower apparatus (WASA) detector setup cooler synchrotron COSY (Institut f\"ur Kernphysik, J\"ulich). Total and differential cross sections obtained covering energy region $\sqrt{s}$ (2.35--2.46) GeV, which includes ABC effect its associated resonance structure. No...
We calculate cross sections for diphoton production in (semi)exclusive $PbPb$ collisions, relevant the LHC. The calculation is based on equivalent photon approximation impact parameter space. elementary $\gamma \gamma \to \gamma$ subprocess are calculated including two different mechanisms. take into account box diagrams with leptons and quarks loops. In addition, we consider a vector-meson dominance (VDM-Regge) contribution virtual intermediate hadronic (vector-like) excitations of photons....
New data on quasifree polarized neutron-proton scattering in the region of recently observed ${d}^{*}$ resonance structure are obtained by exclusive and kinematically complete high-statistics measurements with WASA at COSY. This paper details determination beam polarization, checks character process, all ${A}_{y}$ angular distributions new partial-wave analysis, which includes producing a pole ${}^{3}{D}_{3}\ensuremath{-}{}^{3}{G}_{3}$ coupled partial waves...
Exclusive measurements of the quasi-free $np \to np\pi^0\pi^0$ reaction have been performed by means $dp$ collisions at $T_d$ = 2.27 GeV using WASA detector setup COSY. Total and differential cross sections obtained covering energy region $\sqrt s$ (2.35 - 2.46) GeV, which includes ABC effect its associated $d^*(2380)$ resonance. Adding $d^*$ resonance amplitude to that for conventional processes leads a reasonable description data. The observed in total section is agreement with predictions...
We discuss the sensitivity of $\gamma \gamma \to \tau^+ \tau^-$ process in ultraperipheral Pb+Pb collisions on anomalous magnetic ($a_{\tau}$) and electric ($d_{\tau}$) moments $\tau$ lepton at LHC energies. derive corresponding cross sections by folding elementary section with heavy-ion photon fluxes considering semi-leptonic decays both leptons fiducial volume ATLAS CMS detectors. present predictions for total differential sections, ratios to e^+ e^- (\mu^+ \mu^-$) process. These allow...
We discuss the production mechanism of a new state, putative fully charm tetraquark, observed recently by LHCb at M = 6.9 GeV in $J/\psi J/\psi$ channel. Both single parton scattering (SPS) and double (DPS) mechanisms are considered. calculate distribution invariant mass four-quark system $M_{4c}$ for SPS DPS $c c \bar c$ $k_t$-factorization approach with modern unintegrated gluon functions (UGDFs). The so-calculated contribution is almost two orders magnitude larger than one, but tetraquark...
Ultraperipheral collisions are a source of various interesting phenomena based on photon-induced reactions. We calculate cross sections for single and any number $n$, $p$, $\ensuremath{\alpha}$, $\ensuremath{\gamma}$ rays in ultraperipheral heavy-ion collision Large Hadron Collider energies. analyze the production given neutrons relevant recent ALICE experiment, $\sqrt{{s}_{NN}}=5.02\phantom{\rule{0.16em}{0ex}}\mathrm{TeV}$. In our approach, we include both multiple photon exchanges as well...
Protons and antiprotons at collider energies are a source of high-energy Weizs\"acker-Williams photons. This may open possibility to study exclusive photoproduction heavy vector mesons much larger than possible the HERA accelerator. Here we present detailed investigation $J/\ensuremath{\psi}$ in proton-proton (Relativistic Heavy Ion Collider, CERN LHC) proton-antiproton (Tevatron) collisions. We calculate several differential distributions ${t}_{1}$, ${t}_{2}$, $y$, $\ensuremath{\phi}$, as...
We discuss production of two pairs $c\overline{c}$ within a simple formalism double-parton scattering. Surprisingly very large cross sections, comparable to single-parton scattering single pair contribution, are predicted for LHC energies. Both the total inclusive section as function energy and differential distributions in rapidity transverse momentum charm quark/antiquark well some correlation $\sqrt{s}=7\text{ }\text{ }\mathrm{TeV}$ shown. have presented results commonly used factorized...
An exclusive measurement of the excitation function for dd->3Heppi- reaction was performed at Cooler Synchrotron COSY-Juelich with WASA-at-COSY detection system. The data were taken during a slow acceleration beam from 2.185 GeV/c to 2.400 crossing kinematic threshold eta meson production in dd->4He-eta 2.336 GeV/c. corresponding excess energy respect 4He-eta system varied -51.4MeV 22MeV. integrated luminosity experiment determined using dd->3Hen reaction. shape examined. No signal bound...
We focus on the problem of disentangling single (SPS) and double (DPS) parton scattering modes in production $J/\ensuremath{\psi}$ pairs at LHC conditions. Our analysis is based comparing shapes differential cross sections studying their behavior under imposing kinematical cuts. On SPS side, we consider leading-order $\mathcal{O}({\ensuremath{\alpha}}_{s}^{4})$ contribution with radiative corrections (taken into account framework ${k}_{t}$-factorization approach) subleading...
The double parton distributions (dPDF), both conventional (i.e. ladder) and those corresponding to $1\ensuremath{\rightarrow}2$ ladder splitting, are calculated compared for different two-parton combinations. splitting dPDFs have very similar shape in ${x}_{1}$ ${x}_{2}$. We make a first quantitative evaluation of the single-ladder-splitting contribution scattering (DPS) production two S- or P-wave quarkonia, Higgs bosons $c\overline{c}c\overline{c}$. ratio against contributions is discussed...
We discuss different models for the spin structure of nonperturbative pomeron: scalar, vector, and rank-2 symmetric tensor. The ratio single-helicity-flip to helicity-conserving amplitudes in polarised high-energy proton-proton elastic scattering, known as complex r_5 parameter, is calculated these models. compare our results experimental data from STAR experiment. show that spin-0 (scalar) pomeron model clearly excluded by data, while vector inconsistent with rules quantum field theory....
We consider central exclusive diffractive dipion production in the reactions $pp\ensuremath{\rightarrow}pp{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$ and $p\overline{p}\ensuremath{\rightarrow}p\overline{p}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$ at high energies. include continuum, dominant scalar ${f}_{0}(500)$, ${f}_{0}(980)$, tensor ${f}_{2}(1270)$ resonances decaying into ${\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$ pairs. The calculation...
We apply the ${k}_{T}$-factorization approach to production of $\ensuremath{\phi}$ mesons in deep inelastic scattering. The helicity-conserving ${\ensuremath{\gamma}}^{*}(T,L)\ensuremath{\rightarrow}\ensuremath{\phi}$ impact factor is calculated for longitudinal and transverse photon polarization using meson distribution amplitudes. Different unintegrated gluon distributions are used calculations. formalism massless quarks/antiquarks gives too large cross sections virtualities below...
Abstract We study cross sections for the exclusive diffractive leptoproduction of $$\rho $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>ρ</mml:mi> </mml:math> -mesons, $$\gamma ^*~p~\rightarrow ~\rho ~p$$ <mml:mrow> <mml:msup> <mml:mi>γ</mml:mi> <mml:mo>∗</mml:mo> </mml:msup> <mml:mspace /> <mml:mi>p</mml:mi> <mml:mo>→</mml:mo> </mml:mrow> , within framework high-energy factorization. Cross longitudinally and transversally polarized mesons are shown. employ a wide...