J. Smyrski

Jagiellonian University

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Papers

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i-10 index

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Co-Authors

P. Moskal

Jagiellonian University

K. Pysz

Institute of Nuclear Physics, Polish Academy of Sciences

A. Khoukaz

University of Münster

S. Spataro

University of Turin

R. Kliemt

GSI Helmholtz Centre for Heavy Ion Research

P. Achenbach

Thomas Jefferson National Accelerator Facility

M. Thiel

Johannes Gutenberg University Mainz

K. Korcyl

Institute of Nuclear Physics, Polish Academy of Sciences

P. Kulessa

Institute of Nuclear Physics

H. Flemming

GSI Helmholtz Centre for Heavy Ion Research

Cooperative Institutions

GSI Helmholtz Centre for Heavy Ion Research

223

Joint Institute for Nuclear Research

193

University of Giessen

155

Forschungszentrum Jülich

146

Johannes Gutenberg University Mainz

126

Kurchatov Institute

122

European Organization for Nuclear Research

120

Ruhr University Bochum

116

Institute of High Energy Physics

105

Istituto Nazionale di Fisica Nucleare, Sezione di Torino

101

Author Statistics

Papers

Citation

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Study of excited $$\varvec{\varXi }$$ baryons with the $$\overline{\text{ P }}$$ANDA detector

The European Physical Journal A (2021)

G. Barucca Fabrizio Davı́Giovanni Lancioni P. Mengucci Luigi Montalto

The study of baryon excitation spectra provides insight into the inner structure of baryons. So far, most of the world-wide efforts have been directed towards $N^*$ and $\Delta$ spectroscopy. Nevertheless, the study of the double and triple strange baryon spectrum provides independent information to the $N^*$ and $\Delta$ spectra. The future antiproton experiment PANDA will provide direct access to final states containing a $\bar{\Xi}\Xi$ pair, for which production cross sections up to $\mu$b are expected in $\bar{p}p$ reactions. With a luminosity of $L=10^{31}\,cm^{-2}s^{-1}$ in the first phase of the experiment, the expected cross sections correspond to a production rate of $\sim 10^6$ events$/$day. With a nearly $4\pi$ detector acceptance, PANDA will thus be a hyperon factory. In this study, reactions of the type $\bar{p}p\rightarrow \bar{\Xi}^+ \Xi^{*-}$ as well as $\bar{p}p\rightarrow \bar{\Xi}^{*+} \Xi^{-}$ with various decay modes are investigated. For the exclusive reconstruction of the signal events a full decay tree fit is used, resulting in reconstruction efficiencies between $3\,\%$ and $5\,\%$. This allows high statistics data to be collected within a few weeks of data taking.

Bar (unit)

10.1140/epja/s10050-021-00444-5

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Citations (6)

Technical design report for the $\overline{{\rm{P}}}\mathrm{ANDA}$ Barrel DIRC detector

Journal of Physics G Nuclear and Particle Physics (2018)

B. P. Singh W. Erni B. Krusche M. Steinacher N. K. Walford

This documents describes the technical design and the expected performance of the Barrel DIRC detector for the PANDA experiment. The Barrel DIRC will provide hadronic charged particle identification in the polar angle range of $22^\circ$ to $140^\circ$ for particle momenta between 0.5 GeV/c and 3.5 GeV/c. The design is based on the successful BaBar DIRC with several key improvements. The performance and system cost were optimized in detailed detector simulations and validated with full system prototypes using particle beams at GSI and CERN. The final design meets or exceeds the PID goal of clean $π/K$ separation with at least 3 standard deviations over the entire phase space of charged kaons in the Barrel DIRC.

Particle identification

Particle (ecology)

10.1088/1361-6471/aade3d

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Citations (38)

Precision resonance energy scans with the PANDA experiment at FAIR

The European Physical Journal A (2019)

G. Barucca Fabrizio Davı́Giovanni Lancioni P. Mengucci Luigi Montalto

This paper summarises a comprehensive Monte Carlo simulation study for precision resonance energy scan measurements. Apart from the proof of principle for natural width and line shape measurements of very narrow resonances with PANDA, the achievable sensitivities are quantified for the concrete example of the charmonium-like X(3872) state discussed to be exotic, and for a larger parameter space of various assumed signal cross-sections, input widths and luminosity combinations. PANDA is the only experiment that will be able to perform precision resonance energy scans of such narrow states with quantum numbers of spin and parities that differ from $ J^{PC} = 1^{--}$.

SIGNAL (programming language)

Line (geometry)

10.1140/epja/i2019-12718-2

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Citations (31)

Experimental study ofppηdynamics in thepp→ppηreaction

Physical Review C (2004)

P. Moskal H.-H. Adam A. Budzanowski R. Czyżykiewicz D. Grzonka

A high statistics measurement of the pp --> ppeta reaction at an excess energy of Q = 15.5 MeV has been performed at the internal beam facility COSY-11. The stochastically cooled proton beam and the used detection system allowed to determine the momenta of the outgoing protons with a precision of 4 MeV/c (sigma) in the center-of-mass frame. The determination of the four-momentum vectors of both outgoing protons allowed to derive the complete kinematical information of the ppeta-system. An unexpectedly large enhancement of the occupation density in the kinematical regions of low proton-eta relative momenta is observed. A description taking the proton-proton and the eta-proton interaction into account and assuming an on-shell incoherent pairwise interaction among the produced particles fails to explain this strong effect. Its understanding will require a rigorous three-body approach to the ppeta system and the precise determination of contributions from higher partial waves. We also present an invariant mass spectrum of the proton-proton system determined at Q = 4.5 MeV. Interestingly, the enhancement at large relative momenta between protons is visible also at such a small excess energy. In contrast to all other determined angular distributions, the orientation of the emission plane with respect to the beam direction is extracted to be anisotropic.

10.1103/physrevc.69.025203

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Citations (76)

Charged-pion production in $$\mathbf {Au+Au}$$ collisions at $$\sqrt{\mathbf {s}_{\mathbf {NN}}} = 2.4~{\mathbf {GeV}}$$

The European Physical Journal A (2020)

J. Adamczewski-Musch O. Arnold C. Behnke A. Belounnas A. Belyaev

We present high-statistic data on charged pion emission from Au+Au collisions at $\sqrt{s_{\rm{NN}}}$ = 2.4 GeV (corresponding to $E_{beam}$ = 1.23 A GeV) in four centrality classes in the range 0 - 40$\%$ of the most central collisions. The data are analyzed as a function of transverse momentum, transverse mass, rapidity, and polar angle. Pion multiplicity per participating nucleon decreases moderately with increasing centrality. The polar angular distributions are found to be non-isotropic even for the most central event class. Our results on pion multiplicity fit well into the general trend of the world data, but undershoot by $2.5 \sigma$ data from the FOPI experiment measured at slightly lower beam energy. We compare our data to state-of-the-art transport model calculations (PHSD, IQMD, PHQMD, GiBUU and SMASH) and find substantial differences between the measurement and the results of these calculations.

Multiplicity (mathematics)

Transverse mass

10.1140/epja/s10050-020-00237-2

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Citations (18)

Proceedings of the GEM Collaboration Meeting

J. Bojowald Iliana Ilieva W. Klimala H. Machner B. Razen

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Citations (0)

Exploring time like tranistions in pp, πp and AA reactions with HADES

EPJ Web of Conferences (2020)

P. Salabura J. Adamczewski-Musch B. Arnoldi-Meadows A. Belounnas A. Belyaev

Radiative transition of an excited baryon to a nucleon with emission of a virtual massive photon converting to dielectron pair (Dalitz decays) provides important information about baryon-photon coupling at low q 2 in timelike region. A prominent enhancement in the respective electromagnetic transition Form Factors (etFF) at q 2 near vector mesons ρ/ω poles has been predicted by various calculations reflecting strong baryon-vector meson couplings. The understanding of these couplings is also of primary importance for the interpretation of the emissivity of QCD matter studied in heavy ion collisions via dilepton emission. Dedicated measurements of baryon Dalitz decays in proton-proton and pion-proton scattering with HADES detector at GSI/FAIR are presented and discussed. The relevance of these studies for the interpretation of results obtained from heavy ion reactions is elucidated on the example of the HADES results.

Vector meson

10.1051/epjconf/202024101013

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Citations (4)

Physics Performance Report for PANDA: Strong Interaction Studies with Antiprotons

arXiv (Cornell University) (2009)

PANDA Collaboration W. Erni I. Keshelashvili B. Krusche M. Steinacher

To study fundamental questions of hadron and nuclear physics in interactions of antiprotons with nucleons and nuclei, the universal PANDA detector will be built. Gluonic excitations, the physics of strange and charm quarks and nucleon structure studies will be performed with unprecedented accuracy thereby allowing high-precision tests of the strong interaction. The proposed PANDA detector is a state-of-the art internal target detector at the HESR at FAIR allowing the detection and identification of neutral and charged particles generated within the relevant angular and energy range. This report presents a summary of the physics accessible at PANDA and what performance can be expected.

Antiproton

Charm (quantum number)

Strong interaction

Charm quark

Particle identification

10.48550/arxiv.0903.3905

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Citations (291)

Technical design report for the $\overline{P}$ ANDA (AntiProton Annihilations at Darmstadt) Straw Tube Tracker

The European Physical Journal A (2013)

W. Erni I. Keshelashvili B. Krusche M. Steinacher Y. K. Heng

This document describes the technical layout and the expected performance of the Straw Tube Tracker (STT), the main tracking detector of the $\overline{P}$ ANDA target spectrometer. The STT encloses a Micro-Vertex-Detector (MVD) for the inner tracking and is followed in beam direction by a set of GEM stations. The tasks of the STT are the measurement of the particle momentum from the reconstructed trajectory and the measurement of the specific energy loss for a particle identification. Dedicated simulations with full analysis studies of certain proton-antiproton reactions, identified as being benchmark tests for the whole $\overline{P}$ ANDA scientific program, have been performed to test the STT layout and performance. The results are presented, and the time lines to construct the STT are described.

Tracking (education)

Antiproton

Benchmark (surveying)

Particle identification

Momentum (technical analysis)

10.1140/epja/i2013-13025-8

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Citations (90)