A. Wrońska
A5103275204- Quantum Chromodynamics and Particle Interactions
- Particle physics theoretical and experimental studies
- Nuclear physics research studies
- Radiation Detection and Scintillator Technologies
- High-Energy Particle Collisions Research
- Radiation Therapy and Dosimetry
- Nuclear Physics and Applications
- Atomic and Subatomic Physics Research
- Particle Detector Development and Performance
- Dark Matter and Cosmic Phenomena
- Quantum, superfluid, helium dynamics
- Advanced NMR Techniques and Applications
- Advanced Radiotherapy Techniques
- Astronomical and nuclear sciences
- Atomic and Molecular Physics
- Particle Accelerators and Free-Electron Lasers
- Nuclear reactor physics and engineering
- Particle accelerators and beam dynamics
- Magnetic confinement fusion research
- Psychosomatic Disorders and Their Treatments
- Mental Health and Psychiatry
- Boron Compounds in Chemistry
- Medical Imaging Techniques and Applications
- Schizophrenia research and treatment
- Muon and positron interactions and applications
Jagiellonian University
2014-2024
Institute of Physics
2014-2024
Lawrence Berkeley National Laboratory
2020
Forschungszentrum Jülich
2002-2020
Johannes Gutenberg University Mainz
2014-2020
Uppsala University
2017-2020
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati
2012-2020
Eppendorf (Germany)
2020
Campbell Collaboration
2014-2020
Florida State University
2020
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...
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...
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...
A new method to determine the spin tune is described and tested. In an ideal planar magnetic ring, tune-defined as number of precessions per turn-is given by ν(s)=γG (γ Lorentz factor, G gyromagnetic anomaly). At 970 MeV/c, deuteron spins coherently precess at a frequency ≈120 kHz in Cooler Synchrotron COSY. The deduced from up-down asymmetry deuteron-carbon scattering. time interval 2.6 s, was determined with precision order 10^{-8}, 1×10^{-10} for continuous 100 s accelerator cycle. This...
Based on the notion that local dark-matter field of axions or axionlike particles (ALPs) in our Galaxy induces oscillating couplings to spins nucleons and nuclei (via electric dipole moment latter and/or paramagnetic axion-wind effect), we establish feasibility a new method search for ALPs storage rings. previous work allows us maintain in-plane polarization stored deuteron beam few hundred seconds, perform first proof-of-principle experiment at Cooler Synchrotron (COSY) scan momenta near...
This paper presents the successful application of a phase-lock feedback system to maintain resonance condition radio frequency (rf) spin rotator (specifically, an rf Wien filter) with respect 120 kHz precession in Cooler Synchrotron (COSY) storage ring. Real-time monitoring and filter signal allows relative phase between two be stabilized at arbitrary setpoint. The compensates for deviations by adjusting and/or as needed. With this method, variation demand standard deviation...
High-precision data for vector and tensor analyzing powers the $^{1}\mathrm{H}$$(\mathrm{dP\vec},\mathit{pp})n$ reaction at a 130-MeV deuteron beam energy have been measured over large part of phase space. Theoretical predictions based on various approaches to describe three nucleon ($3N$) system reproduce very well power no three-nucleon force effect is observed these observables. Tensor are also reproduced by calculations in almost whole studied region, but locally certain discrepancies...
This Letter reports the successful use of feedback from a spin polarization measurement to revolution frequency $0.97\text{ }\text{ }\mathrm{GeV}/c$ bunched and polarized deuteron beam in Cooler Synchrotron (COSY) storage ring order control both precession rate ($\ensuremath{\approx}121\text{ }\mathrm{kHz}$) phase horizontal component. Real time synchronization with radio (rf) solenoid made possible rotation out plane, yielding demonstration method manipulate polarization. In particular,...
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 stable spin direction of polarized particles in a storage ring was determined first experimentally, through an accurate measurement the tune and its response to longitudinal magnetic fields.
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 document illustrates the technical layout and expected performance of Micro Vertex Detector (MVD) PANDA experiment. The MVD will detect charged particles as close possible to interaction zone. Design criteria optimisation process well solutions chosen are discussed results this subjected extensive Monte Carlo physics studies. route towards realisation detector is outlined.
Exclusive and kinematically complete measurements of the double pionic fusion to ${}^{3}\mathrm{He}$ have been performed in energy region so-called ABC effect, which denotes a pronounced low-mass enhancement $\ensuremath{\pi}\ensuremath{\pi}$-invariant mass spectrum. The experiments were carried out with WASA detector setup at COSY (the cooler synchrotron Forschungszentrum J\"ulich). Similar observations basic $pn\ensuremath{\rightarrow}d{\ensuremath{\pi}}^{0}{\ensuremath{\pi}}^{0}$ reaction...