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35. A Novel Tool for the Absolute End-to-End Calibration of Fluorescence Telescopes – The XY-ScannerChristoph Schäfer (KIT)Poster
At the highest energies, it is not feasible to measure cosmic rays directly and therefore we measure cosmic rays indirectly by observing a cascade of secondary particles (air shower) induced by interactions of the primary cosmic ray with the atmosphere of the Earth.
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The Pierre Auger Observatory uses 27 large-aperture wide-angle Schmidt telescopes to measure the longitudinal profile of air... -
Ernst Artes (JGU Mainz, HIM, GSI Darmstadt)Poster
Molecular plating (MP) is an electrochemical deposition method to produce mechanically stable thin films of radioisotopes and the term was coined by Parker and Falk in 1962 [1]. The produced thin films find widespread applications in nuclear physics and chemistry experiments, e.g., as α-particle or recoil ion sources, or as targets for ion beam experiments [2].
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To produce thin films via MP,... -
Mr Paolo Leo (Belle II Experiment)Poster
The $\tau$ lepton is the only lepton heavy enough to decay to hadrons. Though the CP violation is well established in neutral kaons, the CP violation of the charged leptons is not expected within the Standard Model. We are searching for direct CP violation in the decay $\tau^-\to\pi^-K^0_S (\ge0\pi^0) \nu_{\tau}$ using a data sample corresponding to an integrated luminosity of 362 fb$^{-1}$....
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Lennard Busch (Karlsruhe Institute of Technology (KIT)), Xhesika Koroveshi (Karlsruhe Institute of Technology (KIT)), Steffen Grohmann (KIT-ITTK)Poster
The Einstein Telescope (ET) is the European third-generation gravitational-wave observatory currently under development.
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It includes a low-frequency (LF) and a high-frequency laser interferometer.
In comparison to existing detectors, sensitivity improvements of several orders of magnitude are foreseen.
Cryogenic operation of ET-LF is imperative for exploiting the full scientific potential of... -
Alexey Elykov (Karlsruhe Institute of Technology (KIT))Poster
Despite the recent advances in physics, Dark Matter (DM) still eludes detection by modern large-scale experiments and puzzles the minds of physicists. Paleo-detectors represent a drastically different approach to DM detection. We propose an innovative and daring idea that takes advantage of the advent of modern microscopy and computational techniques to read out and analyze nanometer-sized...
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Francesco Toschi (Karlsruher Institut für Technologie)Poster
While the search for Dark Matter in the form of massive WIMPs sets stronger and stronger limits, the low mass region of the DM-nucleon scattering parameter space has been barely probed. An efficient detection of Light Dark Matter (LDM) requires a sub-keV detection energy threshold and large exposure. Solid state detectors can reach O(10 eV) threshold, but they are limited in exposure by their...
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Francesco PompaPoster
Environmental neutrons are a source of background for rare event searches taking place in underground laboratories. The production of neutrons at LNGS is mainly driven by spontaneous radioactivity of the U and Th decay chains. The neutron spectrum is known to have spatial and temporal dependences: previous measurements show that the rock in Hall C produces 10 times more neutrons that in Hall A...
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Maximilian Vitz (Forschungszentrum Jülich, RWTH Aachen)Poster
The matter-antimatter asymmetry might be understood by investigating the EDM (Electric Dipole Moment) of elementary charged particles. A permanent EDM of a subatomic particle violates time reversal and parity symmetry at the same time. A finite EDM would be, if discoverd with the currently achievable experimental accuracy, an indication for further CP violation than established in the Standard...
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Christine Hornung (GSI Helmholtzzentrum für Schwerionenforschung)Poster
Approaching the limits of nuclear binding, the structure and properties of drip-line nuclei is of great interest and draws a lot of attention from both, experiment and theory. The nuclear properties in the light lanthanide region are shaped by the interplay between large beta-decay Q-values, low or negative proton separation energies, and the confining effects of the Coulomb barrier. From...
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Neven Kovac (Institute for Astroparticle Physics, Karlsruhe Institute of Technology), Svenja HeynsPoster
Metallic Magnetic Calorimeters (MMCs) are low temperature single particle detectors, whose working principle is based on quantum technology. Due to their excellent energy resolution, near linear detector response, fast signal rise time and close to 100% quantum efficiency, MMCs outperform conventional detectors by several orders of magnitude, making them interesting for a wide range of...
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Joachim Wolf (KIT - ETP), Thomas Thümmler (KIT-IAP)Poster
This poster will introduce the Einstein Telescope Pathfinder project, which is being set up at Maastricht University, and point out the contributions by the Institute for Astroparticle Physics and Technical Physics at KIT.
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Niklas GötzPoster
The initial state of heavy-ion collisions has a short lifetime and cannot be directly measured. As a result, various initial condition models exist. Although averaged event observables with different initial condition models give comparable results, event by event analysis can help to identify systematic differences. To determine the initial conditions is crucial to assess systematic...
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Sri Sankari alias Sowmiya Balan (Karlsruhe Institute of Technology)Poster
Global analyses of different dark matter searches are necessary to determine the status of dark matter models. Highly accurate antiproton measurements from AMS-02 would add valuable information to such global analyses. I will present an analysis pipeline for fast and accurate antiproton likelihoods in global scans. The pipeline consists of a neural network emulator for antiproton flux...
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44. Forging Research Data Infrastructure for Data-Intensive Physics within the PUNCH4NFDI ConsortiumDr Victoria Tokareva (KIT)Poster
Research data infrastructures constitute comprehensive digital frameworks encompassing both physical (hardware infrastructure) and digital (technologies, resources, workflows, protocols, etc.) components. Their primary role lies in facilitating the complete life cycle of research data, thereby advancing scientific knowledge, fostering collaboration, and ensuring data integrity and...
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Jenny Taylor (GSI)Poster
Hyperons are interesting to study because of their importance for explaining the interior of the neutron star cores. It is energetically favorable for strangeness to be created there since it lowers the Fermi pressure. However, the presence of hyperon-hyperon or hyperon-nucleon interactions results in a maximum allowed mass that is lower than observed ones. Strongly repulsive hyperon-nucleon...
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Waleed Esmail (GSI)Poster
Identifying weak decays is a challenging task as they are often obscured by other types of interactions and combinatorial background. However, recent advancements in machine learning have provided new tools to tackle this problem. In particular, Graph Neural Networks (GNNs) have emerged as a promising technique for identifying complex weak decay topologies.
To identify this decay topology, a...
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Syuhei IguroPoster
Measurements of the branching ratios of $B \to D^{(*)}\tau\bar\nu/B \to D^{(*)}\ell\bar\nu$ and $B_c\to J/\psi\, \tau\bar\nu/B_c\to J/\psi\, \ell\bar\nu$ by the BaBar, Belle and LHCb collaborations consistently point towards an abundance of taus compared to channels with light leptons. However, the ratio $\Lambda_b \to\Lambda_c \tau\bar\nu/\Lambda_b \to\Lambda_c \ell\bar\nu$ shows a relative...
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Joachim Wolf (KIT - ETP)Poster
The KATRIN experiment at KIT Campus North aims to determine the neutrino mass with unpresedented sensitivity by measuring the shape of the energy spectrum of electrons from tritium-beta-decay close to the spectral endpoint. The 70-m-long setup includes a gaseous window-less tritium source, a beamline with differential and cryogenic pumping and a spectrometer section with two electro-static...
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Fiona EllwangerPoster
Exploring physics at energies beyond the reach of human-built accelerators by studying cosmic rays requires an accurate reconstruction of their energy.
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At the highest energies, cosmic rays are indirectly measured by observing a shower of secondary particles produced by their interaction in the atmosphere.
At the Pierre Auger Observatory, the energy of the primary particle is either... -
Ms Mariam Rifai (Forschungszentrum Juelich GmbH and RWTH Aachen )Poster
The Jiangmen Underground Neutrino Observatory (JUNO) is a next-generation neutrino detector under construction in South China. It aims to determine the neutrino mass ordering (NMO) primarily by studying the vacuum-dominated oscillation pattern of reactor antineutrinos.With its 20 kton of liquid scintillator target surrounded by 17612 20'' and 25600 3'' PMTs, JUNO will be able to probe as well...
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Gabriela Perez Anadrade (Ruhr-Universität Bochum)Poster
A production run focused on hyperon production was carried out in 2022 with the upgraded HADES Spectrometer, including the new Forward Detector components (FD). The measurements were performed with a proton beam of 4.5 GeV impinging onto a liquid hydrogen target. Proton-proton elastic scattering with one proton going in the FD ($\theta_{FD} <$ 6$^{\circ}$) and the other proton into the main...
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Ahmed Marwan Foda (GSI Helmholtzzentrum für Schwerionenforschung GmbH)Poster
The High Acceptance Di-lepton Spectrometer (HADES) collaboration at GSI employs a pion beam to examine the characteristics of baryonic resonances and their decay channels. This pion-beam facility enables the generation of baryonic resonances at a fixed center of mass energy ($\sqrt{s}$), i.e. in the S-channel. Consequently, these beams possess a significant advantage over proton-induced...
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Vera Hiu-Sze Wu (Karlsruhe Institute for Technology)Poster
The DARk matter Wimp search with liquid xenoN (DARWIN) observatory is a future dark matter detector aiming at reaching the sensitivity for WIMPs at the neutrino floor and covering the mass range from 5 GeV/c2 to above 10 TeV/c2 [1]. The observatory uses the technology of a dual-phase time projection chamber (TPC) with a 40 t active volume of liquid xenon (LXe) [1].
The electrodes of the TPC...
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Mr Lukas Gülzow (IAP), Mrs Jelena Köhler (KIT)Poster
Ultra-high energy (UHE) cosmic rays and neutrinos induce so-called particle air-showers as they interact with the Earth's atmosphere or crust. Radio detection of air-showers has proven to be very advantageous for the measurement of UHE cosmic rays. As a consequence, a new generation of experiments for radio detection at large scales is currently in development. The Giant Radio Array for...
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Mr Steffen Hahn (IAP, Pierre Auger Collaboration)Poster
To understand the physics of cosmic rays at the highest energies (above $10^{18}$ eV), it is essential to have an accurate knowledge of their mass composition. At these energies the direct detection of cosmic rays is unfeasible due to their scarcity. However, using Earth's atmosphere as a calorimeter, it is possible to observe the cascade of secondary particles. Hence, to gain insight into the...
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Ms Shailaja Mohanty (Doctoral student)Poster
The KArlsruhe TRItium Neutrino (KATRIN) experiment is designed to determine the mass of the electron antineutrino by kinematic measurements of the tritium beta-decay with a target sensitivity of 0.2 eV$/c^2$ (90\% C.L.). In 2022, KATRIN reported the most stringent limit on the neutrino mass with $m_\nu < 0.8$ eV$/c^2$ (90\% C.L) based on data acquired during the first two science runs of 2019....
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Jan Gollub (Ruhr-Universität Bochum)Poster
The latest analysis of $\pi^+\pi^-p$ electroproduction and photoproduction data taken by the CLAS collaboration hints to the existence of an additional $N^{'}(1720)3/2^+$ resonance. This hint is based on the comparison of the fits of the electroproduction and photoproduction data which shows a large deviation by a factor four for the branching fraction of the $N(1720)$ into the $\rho p$ final...
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Nikos Karastathis (Karlsruhe Institute of Technology)Poster
CORSIKA 8 is a new framework for air shower simulations implemented in modern C++17, based on past experience with existing codes like CORSIKA 7. The flexible and modular structure of the project allows the development of independent modules that can produce a fully customizable air shower simulation. The radio module in particular is designed to treat the signal propagation and electric field...
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Saad Siddique (GSI Darmstadt, IKP Forschungszentrum Jülich , RWTH Aachen Univeristy)Poster
The matter-antimatter asymmetry may be explained through CP-violation by
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observing a permanent electric dipole moment (EDM) of subatomic particles.
An advanced approach to measure the EDM of charged particles is to apply a
unique method of "Frozen spin" on a polarized beam in an accelerator. To
increase the experimental precision step by step and to study systematic
effects, the EDM... -
Luca Pelicci (Forschungszentrum Jülich and Aachen University)
The energy production in the Sun, resulting from hydrogen-to-helium fusion, involves two distinct processes: the proton-proton (pp) chain and the carbon-nitrogen-oxygen (CNO) cycle. These fusion reactions give rise to electron flavor neutrinos known as solar neutrinos. Over the last few decades, the detection of solar neutrinos has provided compelling evidence for neutrino flavor oscillations....
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Leonard Hasselmann (IAP)
The absolute value of the mass of the neutrino remains an unsolved puzzle of particle physics. One way to measure the neutrino mass is spectroscopy of electrons from the tritium beta decay. The current best limit on the effective anti-electron neutrino mass of m$_ν<0.8\,$eVc$^{−2}$ (90% C.L.) was published by the KATRIN collaboration in 2022 KATRIN measures the beta-decay electron spectrum...
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Tista Mukherjee (Karlsruhe Institute of Technology (KIT))Poster
Since the release of the Gravitational Wave Transient Catalogue, GWTC-2.1 by the LIGO-Virgo collaboration, sub-threshold gravitational wave (GW) candidates are publicly available. They are expected to be released in real-time as well, in the upcoming O4 run. Using these GW candidates for multi-messenger studies complements the ongoing efforts to identify neutrino counterparts to GW events....
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Roman Hiller (KIT)Poster
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Dr Daniel Heuchel (Deutsches Elektronen-Synchrotron (DESY))Poster
Light-shining-through-wall (LSW) and helioscope experiments are designed for generic searches of axions and axion-like-particles (ALPS), relying only on either self-made particles or solar emission. Typically, both experimental approaches utilise the conversion of these particles into photons in the presence of a strong external magnetic field (Sikivie effect) for detection. While LSW...
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Achim AndresPoster
The matter-antimatter asymmetry present in the universe remains unexplained within the confines of the Standard Model of elementary particle physics. A. Sakharov proposed that phenomena causing CP violation are necessary to comprehend this disparity. Permanent Electric Dipole Moments (EDMs) of subatomic elementary particles defy both time reversal and parity asymmetries, consequently...
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Magnus Schlösser (KIT, IAP-TLK)Poster
The Tritium Laboratory Karlsruhe (TLK) of the Institute for Astroparticle Physics (IAP) located at KIT Campus North contributed in advancing the understanding of the radioactive hydrogen isotope tritium and its technical use for applications in nuclear fusion, astroparticle physics and beyond. Two of its outstanding features are its license to handle up to 40 grams of tritium, and its unique...
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Lovisa Rygaard (Deutsches Elektronen-Synchrotron (DESY))Poster
We investigate the discovery potential for long-lived particles produced in association with a top-antitop quark pair at the (High-Luminosity) LHC. Compared to inclusive searches for a displaced vertex, top-associated signals offer new trigger options and an extra handle to suppress background. We design a search strategy for a displaced di-muon vertex in the tracking detectors, in association...
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Daoning Gu (GSI/FZJ/RWTH Aachen)Poster
Polarized hadron beams can be used to explore interactions that are not observable with unpolarized beams. In particular, polarized beams are more advantageous for testing symmetry violations. They also offer the opportunity to search for new physics beyond the Standard Model (SM).
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Axions are leading particle candidates for dark matter. They were originally introduced to solve the strong CP... -
Justin Mohs (Frankfurt University)Poster
In this work we aim to put constraints on the equation of state of nuclear matter by comparing transport calculations with SMASH to the recent high-precision data from the HADES experiment.
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In order to achieve reliable constraints, we first investigate different methods of taking light nuclei formation into account as a large fraction of nucleons is bound to nuclei. We find that flow... -
Mr Jonas Stricker (JGU Mainz & HIM)Poster
Thorium isotopes became of high interest in the search for fundamental physics and for testing of the standard model of particle physics because of their unique nuclear and atomic properties [1,2]. In the project Trapping And Cooling of Thorium Ions via Calcium (𝑇𝐴𝐶𝑇𝐼𝐶𝑎), ion trapping and spectroscopic techniques are developed for a precise determination of nuclear moments, hyperfine...
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Julian Saffer (Karlsruher Institut für Technologie)Poster
With the implementation of a low-energy trigger, the surface array of the IceCube Neutrino Observatory is able to record cosmic-ray induced air showers with a primary energy of just a few hundred TeV. This extension of the energy range closes the gap between direct and indirect observations of primary cosmic rays and provides the potential to test the validity of hadronic interaction models in...
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Ms Megha Venugopal (Karlsruhe Institute of Technology)Poster
The IceCube Neutrino Observatory with its deep in-ice detectors, has effectively contributed to neutrino astronomy. IceTop, located on the surface, is a cosmic ray detector measuring particles produced as a result of extensive air showers. A planned elevated Surface Array, consisting of 8 scintillators and 3 antennas per station, is expected to further the cosmic-ray detection capabilities of...
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