Preprints

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2025-02-18
14:11
arXiv [GSI-2025-00444] Preprint
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Video Cameras used in Beam Instrumentation -- an Overview
[arXiv:2005.04977]
arXiv 21 p. () [10.48550/ARXIV.2005.04977]
Imaging systems have been an integral part of many beam monitors since the early days of accelerator diagnostics. The main application remains the observation of scintillating screens during commissioning, alignment and routine operation with the beam. [...]

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2025-01-30
13:02

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2025-01-02
11:28
[GSI-2025-00006] Preprint
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Cluster and anti-cluster production in heavy-ion collisions and pA reactions
arXiv () [10.48550/ARXIV.2411.04296]
We investigate light cluster and anti-cluster production in heavy-ion collisions from SIS to RHIC energies within the Parton-Hadron-Quantum-Molecular Dynamics (PHQMD) microscopic transport approach which propagates (anti-)baryons using n-body QMD dynamics. In PHQMD the clusters are formed dynamically by potential interactions between baryons - and recognized by the Minimum Spanning Tree (MST) algorithm - as well as by kinetic reactions in case of deuterons. [...]

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2025-01-02
10:50
[GSI-2025-00004] Preprint
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Search for dark photons in heavy-ion collisions
arXiv () [10.48550/ARXIV.2409.20141]
The vector $U$-bosons, or so called 'dark photons', are one of the possible candidates for the dark matter mediators. We present a procedure to derive theoretical constraints on the upper limit of kinetic mixing parameter $ε^2(M_U)$ from heavy-ion as well as $p+p$ and $p+A$ dilepton data from SIS to LHC energies. [...]

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2025-01-02
10:32
[GSI-2025-00003] Preprint
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Quarkonium production in pp and heavy-ion collisions
arXiv () [10.48550/ARXIV.2409.19280]
We describe bottomonium production not only in pp collisions but also in heavy-ion collisions by using the Remler's formalism where quarkonium density operator is applied to all possible combination of heavy quark and heavy antiquark pairs. In pp collisions heavy (anti)quark momentum is provided by the PYTHIA event generator after rescaling $p_T$ and rapidity to imitate the FONLL calculations. [...]

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2025-01-02
10:27
[GSI-2025-00002] Preprint
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Transport properties of the strongly interacting quark-gluon plasma
arXiv () [10.48550/ARXIV.2409.19369]
We investigate the transport properties of the strongly interacting quark-gluon plasma (sQGP) by comparing the role of elastic and inelastic (radiative) processes in the sQGP medium within the effective dynamical quasi-particle model (DQPM), constructed for the description of non-perturbative quantum chromodynamic (QCD) phenomena of the sQGP in line with the lattice QCD (lQCD) equation of state. First, we present the results for the energy and temperature dependencies of the total radiative cross sections and compare them to the corresponding elastic cross sections. [...]

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2024-12-24
02:24
[GSI-2024-01308] Preprint
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Production and in-medium modification of $ϕ$ mesons in proton-nucleus reactions from a transport approach
arXiv () [10.48550/ARXIV.2408.15364]
Production and in-medium modification of hidden strange $ϕ$ mesons are studied in proton-nucleus reactions - p+C, p+Cu and p+Pb - at 12 GeV/c, partially measured by the KEK E325 collaboration via the dilepton decay mode. This work is based on the off-shell microscopic Parton-Hadron-String Dynamics (PHSD) transport approach, which provides the dynamical description of strongly interacting hadronic and partonic degrees of freedom in dense matter, and especially makes it possible to simulate in-medium off-shell dynamics of the $ϕ$ meson in the reactions studied. [...]

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2024-12-04
14:11

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2024-11-08
11:17
arXiv [GSI-2024-00897] Preprint
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Hadron Spectroscopy with Lattice QCD
[arXiv:2203.03230]
US Community Study on the Future of Particle Physics, Snowmass 2021, WashingtonWashington, USA, 17 Jul 2022 - 26 Jul 20222022-07-172022-07-26 35 pp. ()

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2024-02-07
14:03
arXiv [GSI-2024-00454] Preprint
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First experimental time-of-flight-based proton radiography using low gain avalanche diodes
[arXiv:2312.15027]
Ion computed tomography (iCT) is an imaging modality for the direct determination of the relative stopping power (RSP) distribution within a patient's body. Usually, this is done by estimating the path and energy loss of ions traversing the scanned volume via a tracking system and a separate residual energy detector. [...]

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