P. Kulessa
A5016758630- Quantum Chromodynamics and Particle Interactions
- Particle physics theoretical and experimental studies
- Nuclear physics research studies
- High-Energy Particle Collisions Research
- Nuclear Physics and Applications
- Particle Detector Development and Performance
- Nuclear reactor physics and engineering
- Radiation Detection and Scintillator Technologies
- Advanced NMR Techniques and Applications
- Atomic and Molecular Physics
- Quantum, superfluid, helium dynamics
- Atomic and Subatomic Physics Research
- Dark Matter and Cosmic Phenomena
- Astronomical and nuclear sciences
- Advanced Chemical Physics Studies
- Particle Accelerators and Free-Electron Lasers
- Radiation Therapy and Dosimetry
- Neutrino Physics Research
- X-ray Spectroscopy and Fluorescence Analysis
- Particle accelerators and beam dynamics
- Superconducting Materials and Applications
- Medical Imaging Techniques and Applications
- Advanced Radiotherapy Techniques
- Scientific Research and Discoveries
- Pulsars and Gravitational Waves Research
Institute of Nuclear Physics
2016-2024
Institute of Nuclear Physics, Polish Academy of Sciences
2015-2024
Forschungszentrum Jülich
2009-2023
GSI Helmholtz Centre for Heavy Ion Research
2022
Institute for Theoretical and Experimental Physics
2016-2020
Uppsala University
2017-2020
Kurchatov Institute
2020
Jagiellonian University
2000-2019
University of Warsaw
2014-2019
University of Silesia in Katowice
2014-2019
To study fundamental questions of hadron and nuclear physics in interactions antiprotons with nucleons nuclei, the universal PANDA detector will be built. Gluonic excitations, strange charm quarks nucleon structure studies performed unprecedented accuracy thereby allowing high-precision tests strong interaction. The proposed is a state-of-the art internal target at HESR FAIR detection identification neutral charged particles generated within relevant angular energy range. This report...
We report on an exclusive and kinematically complete high-statistics measurement of the basic double-pionic fusion reaction pn→dπ(0)π(0) over full energy region ABC effect, a pronounced low-mass enhancement in ππ-invariant mass spectrum. The measurements, which cover also transition to conventional t-channel ΔΔ process, were performed with upgraded WASA detector setup at COSY. data reveal Abashian-Booth-Crowe effect be uniquely correlated Lorentzian dependence integral cross section....
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...
The differential and total cross sections for the dp→3Heη reaction have been measured in a high precision statistics COSY-ANKE experiment near threshold using continuous beam energy ramp up to an excess Q of 11.3 MeV with essentially 100% acceptance. kinematics allowed mean value be determined about 9 keV. Evidence is found effects higher partial waves Q≳4 MeV. very rapid rise section its maximum within 0.5 implies large η3He scattering length hence presence quasibound state extremely close...
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...
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...
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 report on a high-statistics measurement of the most basic double pionic fusion reaction $\vec{n}p \to d\pi^0\pi^0$ over energy region $d^*(2380)$ resonance by use polarized deuteron beam and observing in quasifree scattering mode. The measurements were performed with WASA detector setup at COSY. data reveal substantial analyzing powers confirm conclusions about $d^*$ obtained from unpolarized measurements. also previous under complementary kinematic conditions.
This documents describes the technical design and expected performance of Barrel DIRC detector for PANDA experiment. The will provide hadronic charged particle identification in polar angle range $22^\circ$ to $140^\circ$ momenta between 0.5 GeV/c 3.5 GeV/c. is based on successful BaBar with several key improvements. system cost were optimized detailed simulations validated full prototypes using beams at GSI CERN. final meets or exceeds PID goal clean $π/K$ separation least 3 standard...
The pp->pp phi reaction has been studied at the Cooler Synchrotron COSY-Juelich, using internal beam and ANKE facility. Total cross sections have determined three excess energies epsilon near production threshold. differential section closest to threshold epsilon=18.5 MeV exhibits a clear S-wave dominance as well noticeable effect due proton-proton final state interaction. Taken together with data for pp omega-production, significant enhancement of phi/omega ratio factor 8 is found compared...
The differential and total cross sections for kaon pair production in the pp->ppK+K- reaction have been measured at three beam energies of 2.65, 2.70, 2.83 GeV using ANKE magnetic spectrometer COSY-Juelich accelerator. These near-threshold data are separated into pairs arising from decay phi-meson remainder. For non-phi selection, ratio terms K-p K+p invariant masses is strongly peaked towards low masses. This effect can be described quantitatively by a simple ansatz final state...
Baryon-to-meson Transition Distribution Amplitudes (TDAs) encoding valuable new information on hadron structure appear as building blocks in the collinear factorized description for several types of hard exclusive reactions. In this paper, we address possibility accessing nucleon-to-pion (πN) TDAs from $$\bar pp \to e^ + - \pi ^0 $$ reaction with future P̄ANDA detector at FAIR facility. At high center-of-mass energy and invariant mass squared lepton pair q 2, amplitude signal channel admits...
Simulation results for future measurements of electromagnetic proton form factors at $\overline{\rm P}$ ANDA (FAIR) within the PandaRoot software framework are reported. The statistical precision with which can be determined is estimated. signal channel $\bar{p}p\rightarrow e^{+}e^{-}$ studied on basis two different but consistent procedures. suppression main background channel, i.e. \pi^{+}\pi^{-}$ , studied. Furthermore, versus efficiency, and systematical uncertainties extracted evaluated...
This paper summarises a comprehensive Monte Carlo simulation study for precision resonance energy scan measurements. Apart from the proof of principle natural width and line shape measurements very narrow resonances with PANDA, achievable sensitivities are quantified concrete example charmonium-like X(3872) state discussed to be exotic, larger parameter space various assumed signal cross-sections, input widths luminosity combinations. PANDA is only experiment that will able perform scans...