Theoretische Physik 1 (Elementarteilchenphysik)

Slide 1

Bildquellen: Universität Siegen

Die Teilchenphysik befasst sich mit einigen der grundlegendsten Fragen im Zusammenhang mit der Struktur der Materie bei kleinsten Abständen und stößt dabei an die Grenzen unseres Wissens. Unser besonderes Interesse gilt der theoretischen Interpretation der Ergebnisse von Experimenten am Large Hadron Collider (LHC) am CERN und dem Flavour-Physikexperiment BELLE II am KEK (Tsukuba/Japan).
Unsere Gruppe ist bekannt für sehr präzise Vorhersagen für Collider- und Flavour-Observablen innerhalb des Standardmodells der Teilchenphysik, die auf perturbativen und nicht-perturbativen quantenfeldtheoretischen Methoden basieren. Der Vergleich unserer Berechnungen mit experimentellen Ergebnissen liefert Erkenntnisse über mögliche Erweiterungen des Standardmodells, mit denen sich offene Fragen wie der Ursprung der Materie-Antimaterie-Asymmetrie im Universum oder die Natur der dunklen Materie beantworten lassen könnten.

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Journal Club

CPPS Events

TP1 Events

Montag	Dienstag	Mittwoch	Donnerstag	Freitag	Samstag	Sonntag
	Dienstag April 1	Mittwoch April 2	Donnerstag April 3	Freitag April 4	Samstag April 5	Sonntag April 6
Montag April 7	Dienstag April 8	Mittwoch April 9	Donnerstag April 10	Freitag April 11	Samstag April 12	Sonntag April 13
Montag April 14	Dienstag April 15 4:00 pm – 5:00 pm Silicon Detector R&D for the CSES missions and beyond 4:00 pm – 5:00 pm Silicon Detector R&D for the CSES missions and beyond ENC-D308 Kontakt: biswas@hep.physik.uni-siegen.de Speakers: Coralie Neubuser (Universita degli Studi di Trento & INFN) The China Seismo-Electromagnetic Satellite (CSES) missions represent the forefront of space-based efforts to study the coupling between the ionosphere and lithosphere. Equipped with a diverse array of instruments, these missions can detect a broad range of perturbations in the ionosphere and magnetosphere, including transient electromagnetic emissions (e.g., from lightning) and long-duration particle injections resulting from space weather events. The first satellite was launched in August 2018, and in this presentation, I will highlight some of the key scientific findings obtained so far. One of the principal instruments aboard CSES is the High-Energy Particle Detector (HEPD), which monitors electrons and protons with energy thresholds of 3 MeV and 30 MeV, respectively. The Limadou collaboration has developed an enhanced version of the HEPD for the second satellite in the CSES constellation, slated for launch in June 2025. A significant upgrade is the use of Monolithic Active Pixel Sensors (MAPS) for the tracker, a technology never previously used in space. Compared to conventional hybrid silicon microstrip technology, MAPS offer improved precision, robustness, easier control and readout, reduced costs, and less invasiveness. However, MAPS still face challenges, such as small size and higher power consumption. The HEPD-02 tracker will consist of 150 ALPIDE sensors, with a custom-designed operation mode and readout system tailored for space applications. The flight model of HEPD-02 underwent extensive test-beam campaigns in 2023, and I will present the first performance results from these tests. In addition to the CSES missions, next-generation astroparticle spaceborne detectors require large-area, solid-state detectors capable of single-hit precision timing measurements. Currently, silicon microstrip detectors are the only viable technological option to meet the large-area coverage and stringent power consumption constraints required for space operations. I will provide an overview of the leading initiatives in this field, before introducing the ARCADIA project by INFN. ARCADIA is developing MAPS with an innovative sensor design that incorporates proprietary backside processing to enhance charge collection efficiency and timing performance across a wide range of operational and environmental conditions. The novel design aims to achieve extremely low power consumption — on the order of 10 mW cm-2 or better — for low hit rates in space applications. Since the initial design phase, several new test-chip versions have been developed and tested, with a specific focus on applications requiring picosecond time resolution. Current efforts are focused on advancing this technology to meet the needs of a future gamma-ray telescope, for which a dedicated demonstrator is being designed and will undergo production in the next year. https://indico.physik.uni-siegen.de/event/507/	Mittwoch April 16 12:45 pm – 1:45 pm Tobias Huber: A brief summary of the Spring meeting of the German Physical Society 12:45 pm – 1:45 pm Tobias Huber: A brief summary of the Spring meeting of the German Physical Society ENC-D308 Speakers: Tobias Huber A brief summary of the Spring meeting of the German Physical Society https://indico.physik.uni-siegen.de/event/420/	Donnerstag April 17	Freitag April 18	Samstag April 19	Sonntag April 20
Montag April 21	Dienstag April 22 4:00 pm – 5:00 pm RI-(S)MOM to MSbar Conversion for BK at Two-loop Order (Sandra Kvedaraite) 4:00 pm – 5:00 pm RI-(S)MOM to MSbar Conversion for BK at Two-loop Order (Sandra Kvedaraite) ENC-D308 Speakers: Sandra Kvedaraite (Granada U.) The Kaon bag parameter, BK, is a key non-perturbative ingredient in the search for new physics through CP-violation. It parameterizes the QCD hadronic matrix element of the effective weak ∆S = 2 four-quark operator which can be computed non-perturbatively on the lattice. The perturbative matching of BK between the lattice renormalization schemes and MSbar scheme has been done before at one-loop order. In this talk I will present the conversion factors for BK between the RI-(S)MOM and the MSbar scheme at two-loop order. I will discuss their residual scale dependence and present updated values for BK as well as for the indirect CP violation in the Kaon system. This talk is based on preprint arXiv:2411.19861. https://indico.physik.uni-siegen.de/event/517/	Mittwoch April 23 12:45 pm – 1:45 pm Eleftheria Solomonidi: Hadronic contributions to rare charm decays and implications for CP violation 12:45 pm – 1:45 pm Eleftheria Solomonidi: Hadronic contributions to rare charm decays and implications for CP violation ENC-D308 Speakers: Eleftheria Solomonidi Hadronic contributions to rare charm decays and implications for CP violation https://indico.physik.uni-siegen.de/event/555/	Donnerstag April 24	Freitag April 25	Samstag April 26	Sonntag April 27
Montag April 28	Dienstag April 29	Mittwoch April 30 12:45 pm – 1:45 pm Sebastian Edelmann : Prospects for detecting new dark physics with the next generation of atomic clocks 12:45 pm – 1:45 pm Sebastian Edelmann : Prospects for detecting new dark physics with the next generation of atomic clocks ENC-D308 Speakers: Sebastian Edelmann Prospects for detecting new dark physics with the next generation of atomic clocks https://indico.physik.uni-siegen.de/event/558/

Mai 2025

Montag	Dienstag	Mittwoch	Donnerstag	Freitag	Samstag	Sonntag
			Donnerstag Mai 1 1	Freitag Mai 2 2	Samstag Mai 3 3	Sonntag Mai 4 4
Montag Mai 5 5 4:00 pm – 6:00 pm Stefan Meiser, Towards a Global Analysis of the $b \to c \bar{u} q$ Puzzle 4:00 pm – 6:00 pm Stefan Meiser, Towards a Global Analysis of the $b \to c \bar{u} q$ Puzzle ENC-D308 https://indico.physik.uni-siegen.de/event/577/	Dienstag Mai 6 6 1:00 pm – 3:00 pm Particle Physics Master Day 1:00 pm – 3:00 pm Particle Physics Master Day Speakers: Alexander Lenz (Siegen University) We will present the attractive possibility of doing a physics master degree with a specialisation in particle physics at Siegen University, Germany. The event will start with a 45 min presentation by Dr. Carmen Diez Pardos (experimental particle physics) and Prof. Dr. Alexander Lenz (theoretical particle physics), where we will introduce Siegen, the University of Siegen, the physics department and the details of the masters course with the focus area particle physics. More information about the master studies in Siegen with the focus particle physics can be found in the brochure and at the dedicted webpage. After the talk there will be plenty of time for the online participants to ask questions. Here Faria Afzal (International graduate student advisor), Prof. Dr. Guido Bell (theoretical particle physics), Ira Dexling (head of Studienförderfonds Siegen e.V.) and Dr. Daniel Müller (head of the house of young talents – HYT) will join in the panel. The event will start at 13:00 Central European Time (CET). Participation via Web-ex: https://uni-siegen.webex.com/meet/alexander.lenz https://indico.physik.uni-siegen.de/event/552/	Mittwoch Mai 7 7 12:45 pm – 1:45 pm Anshika Bansal: Model-independent unbinned analysis of $B\to K^(\to K^+\pi^-)\mu^+\mu^-$ zeroes, bounds, Wilson coefficients and symmetries 12:45 pm – 1:45 pm Anshika Bansal: Model-independent unbinned analysis of $B\to K^(\to K^+\pi^-)\mu^+\mu^-$ zeroes, bounds, Wilson coefficients and symmetries ENC-D308 Speakers: Anshika Bansal Model-independent unbinned analysis of $B\to K^*(\to K^+\pi^-)\mu^+\mu^-$ zeroes, bounds, Wilson coefficients and symmetries https://indico.physik.uni-siegen.de/event/560/	Donnerstag Mai 8 8 4:15 pm – 5:30 pm Trapped Ion Clocks – Relativistic Effects and Collective Dynamics 4:15 pm – 5:30 pm Trapped Ion Clocks – Relativistic Effects and Collective Dynamics ENC-D114 (ENC) Kontakt: stefan.nimmrichter@uni-siegen.de Speakers: Klemens Hammerer (Leibniz Universität Hannover) Optical atomic clocks have achieved record-breaking stability, with accuracies corresponding to a drift of less than one second over the age of the universe. Among the leading platforms realizing this performance are cold trapped ions, which offer exceptional quantum control and coherence. At this level of precision, new questions emerge at the intersection of quantum optics and relativistic physics. In this talk, I will present our recent work on relativistic and collective effects in trapped ion clocks. Relativistic corrections induce a coupling between the ions‘ internal clock states and their collective center-of-mass motion in the trap, a phenomenon that has recently been captured in a rigorous theoretical framework. I will discuss the implications for systematic uncertainties in atomic clocks and the experimental challenges in controlling, cooling, and probing the collective dynamics of Coulomb crystals. V. J. Martínez-Lahuerta et al. Phys. Rev. A. 106 032803 (2022)I. Vybornyi et al PRX Quantum 4, 040346 (2023)L. Pelzer at el Phys. Rev. Lett. 133, 033203 (2024)A. Chu et al Phys. Rev. Lett. 134, 093201 (2025) https://indico.physik.uni-siegen.de/event/532/	Freitag Mai 9 9	Samstag Mai 10 10	Sonntag Mai 11 11
Montag Mai 12 12 4:00 pm – 5:00 pm A TeV scale origin for Higgs and Flavour 4:00 pm – 5:00 pm A TeV scale origin for Higgs and Flavour ENC-D308 Speakers: Joe Davighi (CERN) The hierarchy problem remains a strong theoretical motivation for there being new physics close to the TeV scale, such as compositeness or supersymmetry. Precision flavour measurements, on the other hand, probe scales up to 10^6 TeV, which tell us that any solution to the hierarchy problem must have a special flavour structure. For example, the new physics might be ‚minimally flavour violating‘, which reconciles the flavour bounds, but is now probed up to 10 TeV by LHC data. We discuss an alternative flavour structure, viable closer to 1 TeV, in which new physics couples preferentially to the third family. Moreover, this non-universal approach points to BSM models in which the hierarchy problem and the flavour puzzle are solved together near the TeV scale. Theories in this class predict a rich phenomenology in electroweak, flavour, and high pT observables, that can be probed from many directions in present and future colliders. https://indico.physik.uni-siegen.de/event/518/	Dienstag Mai 13 13	Mittwoch Mai 14 14 12:45 pm – 1:45 pm Zachari Wuthrich (TBA) 12:45 pm – 1:45 pm Zachari Wuthrich (TBA) ENC-D308 Speakers: Zachari Wuthrich TBA https://indico.physik.uni-siegen.de/event/562/	Donnerstag Mai 15 15 4:15 pm – 5:30 pm LHCb at the frontier of flavor physics: the three movements of the flavor sonata 4:15 pm – 5:30 pm LHCb at the frontier of flavor physics: the three movements of the flavor sonata ENC-D114 (ENC) Kontakt: stefan.nimmrichter@uni-siegen.de Speakers: Marina Artuso (Syracuse University, NY) The fundamental building blocks of the subatomic particles that we study are characterized by a property called flavor that leads to intriguing patterns that are still baffling our understanding. Two quarks having beauty and charm promise to unveil interesting new discoveries if we persevere in the effort of uncovering subtle deviations from the current canon of our understanding, the so-called Standard Model. The LHCb experiment is the first experiment designed to study interesting decays of the b and c quarks at a hadron machine. Currently it is taking data in its “Upgrade I” design and has successfully demonstrated the capabilities of the innovative software trigger, that allows to enhance the physics reach beyond the prospects o;ered by an increase in luminosity. The data set from its first data taking cycle is still being exploited, while many physics results from the upgraded detectors are under way. In addition, an ambitious upgrade is planned for operation at the HL-LHC. Highlights from the recent physics results, immediate prospects and upgrade plans will be presented. https://indico.physik.uni-siegen.de/event/537/	Freitag Mai 16 16	Samstag Mai 17 17	Sonntag Mai 18 18
Montag Mai 19 19 4:00 pm – 5:00 pm TBA (Miguel Benitez) 4:00 pm – 5:00 pm TBA (Miguel Benitez) ENC-D308 Speakers: Miguel Benitez (Salamanca U.) https://indico.physik.uni-siegen.de/event/519/	Dienstag Mai 20 20 5:00 pm – 7:00 pm Particle Physics Master Day 5:00 pm – 7:00 pm Particle Physics Master Day Speakers: Alexander Lenz (Siegen University) We will present the attractive possibility of doing a physics master degree with a specialisation in particle physics at Siegen University, Germany. The event will start with a 45 min presentation by Dr. Carmen Diez Pardos (experimental particle physics) and Prof. Dr. Alexander Lenz (theoretical particle physics), where we will introduce Siegen, the University of Siegen, the physics department and the details of the masters course with the focus area particle physics. More information about the master studies in Siegen with the focus particle physics can be found in the brochure and at the dedicted webpage. After the talk there will be plenty of time for the online participants to ask questions. Here Faria Afzal (International graduate student advisor), Prof. Dr. Guido Bell (theoretical particle physics), Ira Dexling (head of Studienförderfonds Siegen e.V.) and Dr. Daniel Müller (head of the house of young talents – HYT) will join in the panel. The event will start at 17:00 Central European Time (CET). Participation via Web-ex: https://uni-siegen.webex.com/meet/alexander.lenz https://indico.physik.uni-siegen.de/event/553/	Mittwoch Mai 21 21 12:45 pm – 1:45 pm Aritra Biswas (TBA) 12:45 pm – 1:45 pm Aritra Biswas (TBA) ENC-D308 Speakers: Aritra Biswas TBA https://indico.physik.uni-siegen.de/event/563/ 6:00 pm – 7:30 pm Exploring New Physics with LHC Data 6:00 pm – 7:30 pm Exploring New Physics with LHC Data ENC-D114 (ENC) Kontakt: stefan.nimmrichter@uni-siegen.de Speakers: Benjamin Fuks (CNRS – Sorbonne Université) In this colloquium, I will explore the current status and future prospects for new physics in light of recent and upcoming results from the Large Hadron Collider (LHC). The presentation will begin with an overview of how generic simplified models for physics beyond the Standard Model are constructed in order to search for signature of new phenomena. I will then discuss the latest experimental results from the LHC and examine implications and constraints on a variety of models including, among others, supersymmetry, dark matter, additional symmetries and top-philic states. https://indico.physik.uni-siegen.de/event/538/	Donnerstag Mai 22 22 4:30 pm – 8:30 pm Announcement of Clusters of Excellence to receive funding in the future 4:30 pm – 8:30 pm Announcement of Clusters of Excellence to receive funding in the future D114 (ENC) Speakers: Alexander Lenz (Siegen University) https://indico.physik.uni-siegen.de/event/578/	Freitag Mai 23 23	Samstag Mai 24 24	Sonntag Mai 25 25
Montag Mai 26 26 4:00 pm – 5:00 pm Symmetric Mass Generation: a new paradigm 4:00 pm – 5:00 pm Symmetric Mass Generation: a new paradigm ENC-D308 Speakers: Anna Hasenfratz (U. Boulder) Symmetric Mass Generation (SMG) is a new paradigm to generate massive bound states from massless fermions without breaking any continuous symmetries. The SMG phase is confining but chirally symmetric, without Goldstone bosons. The necessary condition for such a phase is the cancellation of all, continuous and discrete, ‚t Hooft anomalies.SMG was originally discovered in lower dimensional condensed matter systems, but by now we have evidence that it also occurs in 3+1 dimensional gauge-fermion systems.If confirmed, SMG could provide a new UV completion of the standard model and give rise to new scenarios for beyond standard model physics.In this talk I review the basic properties of SMG and show evidence of UV complete SMG phases both in SU(2) and SU(3) gauge-fermion systems. While the results are from lattice simulations, this is not a lattice talk. I will not discuss details of the simulations. https://indico.physik.uni-siegen.de/event/572/	Dienstag Mai 27 27 4:15 pm – 5:15 pm TBA (Andrzej Siodmok) 4:15 pm – 5:15 pm TBA (Andrzej Siodmok) ENC-D308 Kontakt: horstmann@physik.uni-siegen.de Speakers: Andrzej Siodmok (CERN) https://indico.physik.uni-siegen.de/event/522/	Mittwoch Mai 28 28 12:45 pm – 1:45 pm Gilberto Tetlalmatzi-Xolocotzi (TBA) 12:45 pm – 1:45 pm Gilberto Tetlalmatzi-Xolocotzi (TBA) ENC-D308 Speakers: Gilberto Tetlalmatzi-Xolocotzi TBA https://indico.physik.uni-siegen.de/event/564/	Donnerstag Mai 29 29	Freitag Mai 30 30	Samstag Mai 31 31

Juni 2025

Montag	Dienstag	Mittwoch	Donnerstag	Freitag	Samstag	Sonntag
						Sonntag Juni 1 1
Montag Juni 2 2	Dienstag Juni 3 3 4:15 pm – 5:15 pm TBA (Marco Gersabeck) 4:15 pm – 5:15 pm TBA (Marco Gersabeck) ENC-D308 Kontakt: horstmann@physik.uni-siegen.de Speakers: Marco Gersabeck (Freiburg U.) https://indico.physik.uni-siegen.de/event/523/	Mittwoch Juni 4 4 12:45 pm – 1:45 pm Jack Jenkins (TBA) 12:45 pm – 1:45 pm Jack Jenkins (TBA) ENC-D308 Speakers: Jack Jenkins TBA https://indico.physik.uni-siegen.de/event/565/	Donnerstag Juni 5 5 4:15 pm – 5:30 pm Lehrvortrag (TBA) 4:15 pm – 5:30 pm Lehrvortrag (TBA) ENC-D114 (ENC) Kontakt: stefan.nimmrichter@uni-siegen.de Speakers: Assegid Flatae (University of Siegen) https://indico.physik.uni-siegen.de/event/536/	Freitag Juni 6 6	Samstag Juni 7 7	Sonntag Juni 8 8
Montag Juni 9 9	Dienstag Juni 10 10 4:15 pm – 5:15 pm Global network of cavities for gravitational waves search 4:15 pm – 5:15 pm Global network of cavities for gravitational waves search ENC-D308 Kontakt: biswas@hep.physik.uni-siegen.de Speakers: Kristof Schmieden (Johannes Gutenberg Universität Mainz) TBA https://indico.physik.uni-siegen.de/event/508/	Mittwoch Juni 11 11 12:45 pm – 1:45 pm Guido Bell (TBA) 12:45 pm – 1:45 pm Guido Bell (TBA) ENC-D308 Speakers: Guido Bell TBA https://indico.physik.uni-siegen.de/event/566/	Donnerstag Juni 12 12 4:15 pm – 5:30 pm Can statistical mechanics be reduced to classical or quantum mechanics? 4:15 pm – 5:30 pm Can statistical mechanics be reduced to classical or quantum mechanics? ENC-D114 (ENC) Kontakt: stefan.nimmrichter@uni-siegen.de Speakers: Barbara Drossel (TU Darmstadt) The microscopic description of many-particle systems via Newtons equations of motion or the Schrödinger equation is deterministic and time reversal invariant. In contrast, the formalism of statistical mechanics suggest irreversible and stochastic behavior on the microscopic scale, and from such a description the second law of thermodynamics follows naturally. Nevertheless, it is widely assumed that thermodynamics and statistical mechanics can in principle be derived from classical mechanics or quantum mechanics. Such derivations usually invoke our ignorance of microscopic details of the system. This talk will show that in fact these supposed derivations require additional assumptions that go beyond Newton’s equations or the Schrödinger equation. I will argue that we have to give up the notion that classical mechanics and quantum mechanics are a description that is infinitely exact (i.e., uses an infinite number of bits). Then statistical mechanics and thermodynamics follow naturally. https://indico.physik.uni-siegen.de/event/534/	Freitag Juni 13 13	Samstag Juni 14 14	Sonntag Juni 15 15
Montag Juni 16 16 4:00 pm – 5:00 pm TBA (Patrick Hager) 4:00 pm – 5:00 pm TBA (Patrick Hager) ENC-D308 Speakers: Patrick Hager (JGU Mainz) https://indico.physik.uni-siegen.de/event/520/	Dienstag Juni 17 17	Mittwoch Juni 18 18 12:45 pm – 1:45 pm Jaime del Palacio Lirola (TBA) 12:45 pm – 1:45 pm Jaime del Palacio Lirola (TBA) ENC-D308 Speakers: Jaime del Palacio Lirola TBA https://indico.physik.uni-siegen.de/event/567/	Donnerstag Juni 19 19	Freitag Juni 20 20	Samstag Juni 21 21	Sonntag Juni 22 22
Montag Juni 23 23 9:00 am – 6:00 pm Beyond Flavour physics 9:00 am – 6:00 pm Beyond Flavour physics Speakers: GIlberto Tetlalmatzi-Xolocotzi (Siegen/Orsay) The main goal of the event is to discuss new ideas and research directions in Higgs and top physics, as well as to explore potential flavor studies at future colliders.Another focus will be the interplay between high-energy physics and quantum information theory. Alongside the scientific presentations, we expect active discussions on these topics to foster new collaborations with the research groups in Siegen, especially in preparation for the third funding period of the CRC. Siegen is centrally situated in Germany, about 125 km from Frankfurt to the southeast and 90 km from Cologne to the west. The nearest international airports are located in Frankfurt, Cologne, and Düsseldorf. Additionally, Siegen has a small regional airport available for those traveling by private plane. Organizing committee: Tao Han (than@pitt.edu), Wolfgang Kilian (kilian@physik.uni-siegen.de ), Gilberto Tetlalmatzi-Xolocotzi (gtx@physik.uni-siegen.de). (The pictures shown were kindly provided by Aleksei Rusov) https://indico.physik.uni-siegen.de/event/573/	Dienstag Juni 24 24	Mittwoch Juni 25 25 12:45 pm – 1:45 pm Daniel Vladimirov (TBA) 12:45 pm – 1:45 pm Daniel Vladimirov (TBA) ENC-D308 Speakers: Daniel Vladimirov TBA https://indico.physik.uni-siegen.de/event/568/	Donnerstag Juni 26 26	Freitag Juni 27 27	Samstag Juni 28 28	Sonntag Juni 29 29
Montag Juni 30 30 4:00 pm – 5:00 pm TBA (Dominik Stöckinger) 4:00 pm – 5:00 pm TBA (Dominik Stöckinger) ENC-D308 Speakers: Dominik Stöckinger (TU Dresden) https://indico.physik.uni-siegen.de/event/521/

Juli 2025

Montag	Dienstag	Mittwoch	Donnerstag	Freitag	Samstag	Sonntag
	Dienstag Juli 1 1	Mittwoch Juli 2 2 12:45 pm – 1:45 pm Alex Khodjamirian (TBA) 12:45 pm – 1:45 pm Alex Khodjamirian (TBA) ENC-D308 Speakers: Alex Khodjamirian TBA https://indico.physik.uni-siegen.de/event/569/	Donnerstag Juli 3 3 4:15 pm – 5:30 pm 100 years of quantum mechanics: What happened? What did the protagonist say after the war? And what does the history of physics know today? 4:15 pm – 5:30 pm 100 years of quantum mechanics: What happened? What did the protagonist say after the war? And what does the history of physics know today? ENC-D114 (ENC) Kontakt: stefan.nimmrichter@uni-siegen.de Speakers: Arne Schirrmacher (HU Berlin) https://indico.physik.uni-siegen.de/event/535/	Freitag Juli 4 4	Samstag Juli 5 5	Sonntag Juli 6 6
Montag Juli 7 7	Dienstag Juli 8 8 4:15 pm – 5:15 pm Uli Haisch (TBA) 4:15 pm – 5:15 pm Uli Haisch (TBA) D308 (ENC) https://indico.physik.uni-siegen.de/event/556/	Mittwoch Juli 9 9 12:45 pm – 1:45 pm Eleftheria Malami (TBA) 12:45 pm – 1:45 pm Eleftheria Malami (TBA) ENC-D308 Speakers: Eleftheria Malami TBA https://indico.physik.uni-siegen.de/event/570/	Donnerstag Juli 10 10 4:15 pm – 5:30 pm Colloquium talk (TBA) 4:15 pm – 5:30 pm Colloquium talk (TBA) ENC-D114 (ENC) Kontakt: stefan.nimmrichter@uni-siegen.de Speakers: Michael Drewsen (Aarhus University) https://indico.physik.uni-siegen.de/event/533/	Freitag Juli 11 11	Samstag Juli 12 12	Sonntag Juli 13 13
Montag Juli 14 14	Dienstag Juli 15 15	Mittwoch Juli 16 16 12:45 pm – 1:45 pm Ilija Milutin (TBA) 12:45 pm – 1:45 pm Ilija Milutin (TBA) ENC-D308 Speakers: Ilija Milutin TBA https://indico.physik.uni-siegen.de/event/571/	Donnerstag Juli 17 17 4:15 pm – 5:30 pm Nonlinear all-optical control and detection of ultrafast bandgap engineering 4:15 pm – 5:30 pm Nonlinear all-optical control and detection of ultrafast bandgap engineering ENC-D114 (ENC) Kontakt: stefan.nimmrichter@uni-siegen.de Speakers: Giancarlo Soavi (Institute of Solid State Physics, Friedrich Schiller University Jena) Layered materials, such as graphene and transition metal dichalcogenides (TMDs), possess unique nonlinear optical (NLO) properties [1], which allow a full control over the intensity [2,3], polarization [4] and orbital angular momentum [5] of the light emitted via perturbative harmonic generation processes. Furthermore, TMDs have emerged as the ideal platform to study the interplay between space-inversion and time-reversal symmetries, which can be independently engineered in by tuning the number of layers (space-inversion) and via excitation with circularly polarized light (time-reversal). In this talk, I will discuss our recently developed approaches to modulate the bandgap in TMDs using ultrafast and off-resonant excitation, and the possibility to subsequently detect broken time-reversal symmetry using second [6,7] and third harmonic generation. In particular, all-optical bandgap modulation can be achieved via the coherent optical Stark and Bloch-Siegert effects, with the additional degree of freedom to create either a symmetric or asymmetric bandgap opening in the ±K valleys, depending on the number of layers of the sample and the polarization state of the excitation beam. In monolayer TMDs, a valley asymmetric bandgap modulation effectively corresponds to breaking of time-reversal symmetry. In bilayer TMDs, broken time-reversal symmetry manifests itself as a valley symmetric bandgap modulation, which lifts the spin degeneracy. Subsequently, both symmetric and asymmetric all-optical bandgap modulation can be probed via polarization and intensity dependent measurements of perturbative nonlinear optics. References Dogadov, O. et al., “Parametric Nonlinear Optics with Layered Materials and Related Heterostructures”, Laser & Photon. Rev., Vol. 16, No. 9, 2100726, 2022 Soavi, G. et al., “Broadband, electrically tunable third-harmonic generation in graphene”, Nat. Nanotechnol., Vol. 13, 583-588, 2018 Ghaebi, O. et al., “Ultrafast Opto-Electronic and Thermal Tuning of Third-Harmonic Generation in a Graphene Field Effect Transistor”, Adv. Science, Vol. 11, No. 31, 2401840, 2024 Klimmer, S. et al., “All-optical polarization and amplitude modulation of second-harmonic generation in atomically thin semiconductors”, Nat. Photon., Vol. 15, 837-842, 2021 Sinelnik, A. et al., “Ultrafast all-optical second harmonic wavefront shaping”, Nat. Comms., Vol. 15, 2507, 2024 Herrmann, P. et al., “Nonlinear valley selection rules and all-optical probe of broken time-reversal symmetry in monolayer WSe2”, Nat. Photon., Vol. 19, 300-306, 2025 Herrmann, P. et al., “Nonlinear All-Optical Coherent Generation and Read-Out of Valleys in Atomically Thin Semiconductors”, Small, Vol. 19, No.37, 2301126, 2023 https://indico.physik.uni-siegen.de/event/539/	Freitag Juli 18 18	Samstag Juli 19 19	Sonntag Juli 20 20
Montag Juli 21 21	Dienstag Juli 22 22	Mittwoch Juli 23 23	Donnerstag Juli 24 24	Freitag Juli 25 25	Samstag Juli 26 26	Sonntag Juli 27 27
Montag Juli 28 28	Dienstag Juli 29 29	Mittwoch Juli 30 30	Donnerstag Juli 31 31

August 2025

Montag	Dienstag	Mittwoch	Donnerstag	Freitag	Samstag	Sonntag
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Montag August 4 4	Dienstag August 5 5	Mittwoch August 6 6	Donnerstag August 7 7	Freitag August 8 8	Samstag August 9 9	Sonntag August 10 10
Montag August 11 11	Dienstag August 12 12	Mittwoch August 13 13	Donnerstag August 14 14	Freitag August 15 15	Samstag August 16 16	Sonntag August 17 17
Montag August 18 18	Dienstag August 19 19	Mittwoch August 20 20	Donnerstag August 21 21	Freitag August 22 22	Samstag August 23 23	Sonntag August 24 24
Montag August 25 25	Dienstag August 26 26	Mittwoch August 27 27	Donnerstag August 28 28	Freitag August 29 29	Samstag August 30 30	Sonntag August 31 31

Keine Termine.

September 2025

Montag	Dienstag	Mittwoch	Donnerstag	Freitag	Samstag	Sonntag
Montag September 1 1	Dienstag September 2 2	Mittwoch September 3 3	Donnerstag September 4 4	Freitag September 5 5	Samstag September 6 6	Sonntag September 7 7
Montag September 8 8	Dienstag September 9 9	Mittwoch September 10 10	Donnerstag September 11 11	Freitag September 12 12	Samstag September 13 13	Sonntag September 14 14
Montag September 15 15	Dienstag September 16 16	Mittwoch September 17 17	Donnerstag September 18 18	Freitag September 19 19	Samstag September 20 20	Sonntag September 21 21
Montag September 22 22 More than a lifetime Montag September 22 5:00 pm – Donnerstag September 25 6:00 pm 5:00 pm – 6:00 pm More than a lifetime USS, Siegen University, Germany Kontakt: alexander.lenz@uni-siegen.de;erguezel@physik.uni-siegen.de In this workshop we will cover theoretical and experimental aspects of lifetimes of heavy hadrons. Theory aspects include perturbative contributions to the free-quark decay, to 2-quark contributions (i.e. kinetic operator, chromomagnetic operator, Darwin operator,…) and to 4-quark contributions as well as non-perturbative contributions. The latter ones can be determined by lattice QCD studies, sum rule calculations and fits of inclusive semilpetonic decays. Experimental aspects include…. Siegen is located centrally in Germany, around 125 km northwest of Frankfurt and 90 km east of Cologne and can be reached well via train or car. Nearby international airports are in Frankfurt, Cologne and Düsseldorf. (Copyright of the pictures: Aleksei Rusov) The University of Siegen has around 15.000 students and it has a large theoretical flavour physics group with around 40 members. Downtown Siegen offers many pubs, restaurants and cafes, but also theaters, cinemas and concert halls. (Copyright: Universität Siegen) https://indico.physik.uni-siegen.de/event/498/	Dienstag September 23 23 More than a lifetime Montag September 22 5:00 pm – Donnerstag September 25 6:00 pm 5:00 pm – 6:00 pm More than a lifetime USS, Siegen University, Germany Kontakt: alexander.lenz@uni-siegen.de;erguezel@physik.uni-siegen.de In this workshop we will cover theoretical and experimental aspects of lifetimes of heavy hadrons. Theory aspects include perturbative contributions to the free-quark decay, to 2-quark contributions (i.e. kinetic operator, chromomagnetic operator, Darwin operator,…) and to 4-quark contributions as well as non-perturbative contributions. The latter ones can be determined by lattice QCD studies, sum rule calculations and fits of inclusive semilpetonic decays. Experimental aspects include…. Siegen is located centrally in Germany, around 125 km northwest of Frankfurt and 90 km east of Cologne and can be reached well via train or car. Nearby international airports are in Frankfurt, Cologne and Düsseldorf. (Copyright of the pictures: Aleksei Rusov) The University of Siegen has around 15.000 students and it has a large theoretical flavour physics group with around 40 members. Downtown Siegen offers many pubs, restaurants and cafes, but also theaters, cinemas and concert halls. (Copyright: Universität Siegen) https://indico.physik.uni-siegen.de/event/498/	Mittwoch September 24 24 More than a lifetime Montag September 22 5:00 pm – Donnerstag September 25 6:00 pm 5:00 pm – 6:00 pm More than a lifetime USS, Siegen University, Germany Kontakt: alexander.lenz@uni-siegen.de;erguezel@physik.uni-siegen.de In this workshop we will cover theoretical and experimental aspects of lifetimes of heavy hadrons. Theory aspects include perturbative contributions to the free-quark decay, to 2-quark contributions (i.e. kinetic operator, chromomagnetic operator, Darwin operator,…) and to 4-quark contributions as well as non-perturbative contributions. The latter ones can be determined by lattice QCD studies, sum rule calculations and fits of inclusive semilpetonic decays. Experimental aspects include…. Siegen is located centrally in Germany, around 125 km northwest of Frankfurt and 90 km east of Cologne and can be reached well via train or car. Nearby international airports are in Frankfurt, Cologne and Düsseldorf. (Copyright of the pictures: Aleksei Rusov) The University of Siegen has around 15.000 students and it has a large theoretical flavour physics group with around 40 members. Downtown Siegen offers many pubs, restaurants and cafes, but also theaters, cinemas and concert halls. (Copyright: Universität Siegen) https://indico.physik.uni-siegen.de/event/498/	Donnerstag September 25 25 More than a lifetime Montag September 22 5:00 pm – Donnerstag September 25 6:00 pm 5:00 pm – 6:00 pm More than a lifetime USS, Siegen University, Germany Kontakt: alexander.lenz@uni-siegen.de;erguezel@physik.uni-siegen.de In this workshop we will cover theoretical and experimental aspects of lifetimes of heavy hadrons. Theory aspects include perturbative contributions to the free-quark decay, to 2-quark contributions (i.e. kinetic operator, chromomagnetic operator, Darwin operator,…) and to 4-quark contributions as well as non-perturbative contributions. The latter ones can be determined by lattice QCD studies, sum rule calculations and fits of inclusive semilpetonic decays. Experimental aspects include…. Siegen is located centrally in Germany, around 125 km northwest of Frankfurt and 90 km east of Cologne and can be reached well via train or car. Nearby international airports are in Frankfurt, Cologne and Düsseldorf. (Copyright of the pictures: Aleksei Rusov) The University of Siegen has around 15.000 students and it has a large theoretical flavour physics group with around 40 members. Downtown Siegen offers many pubs, restaurants and cafes, but also theaters, cinemas and concert halls. (Copyright: Universität Siegen) https://indico.physik.uni-siegen.de/event/498/	Freitag September 26 26	Samstag September 27 27	Sonntag September 28 28
Montag September 29 29	Dienstag September 30 30

Oktober 2025

Montag	Dienstag	Mittwoch	Donnerstag	Freitag	Samstag	Sonntag
		Mittwoch Oktober 1 1	Donnerstag Oktober 2 2	Freitag Oktober 3 3	Samstag Oktober 4 4	Sonntag Oktober 5 5
Montag Oktober 6 6	Dienstag Oktober 7 7	Mittwoch Oktober 8 8	Donnerstag Oktober 9 9	Freitag Oktober 10 10	Samstag Oktober 11 11	Sonntag Oktober 12 12
Montag Oktober 13 13	Dienstag Oktober 14 14	Mittwoch Oktober 15 15	Donnerstag Oktober 16 16	Freitag Oktober 17 17	Samstag Oktober 18 18	Sonntag Oktober 19 19
Montag Oktober 20 20	Dienstag Oktober 21 21	Mittwoch Oktober 22 22	Donnerstag Oktober 23 23	Freitag Oktober 24 24	Samstag Oktober 25 25	Sonntag Oktober 26 26
Montag Oktober 27 27	Dienstag Oktober 28 28	Mittwoch Oktober 29 29	Donnerstag Oktober 30 30	Freitag Oktober 31 31

Keine Termine.

November 2025

Montag	Dienstag	Mittwoch	Donnerstag	Freitag	Samstag	Sonntag
					Samstag November 1 1	Sonntag November 2 2
Montag November 3 3	Dienstag November 4 4	Mittwoch November 5 5	Donnerstag November 6 6	Freitag November 7 7	Samstag November 8 8	Sonntag November 9 9
Montag November 10 10	Dienstag November 11 11	Mittwoch November 12 12	Donnerstag November 13 13	Freitag November 14 14	Samstag November 15 15	Sonntag November 16 16
Montag November 17 17	Dienstag November 18 18	Mittwoch November 19 19	Donnerstag November 20 20	Freitag November 21 21	Samstag November 22 22	Sonntag November 23 23
Montag November 24 24	Dienstag November 25 25	Mittwoch November 26 26	Donnerstag November 27 27	Freitag November 28 28	Samstag November 29 29	Sonntag November 30 30

Keine Termine.

Dezember 2025

Montag	Dienstag	Mittwoch	Donnerstag	Freitag	Samstag	Sonntag
Montag Dezember 1 1	Dienstag Dezember 2 2	Mittwoch Dezember 3 3	Donnerstag Dezember 4 4	Freitag Dezember 5 5	Samstag Dezember 6 6	Sonntag Dezember 7 7
Montag Dezember 8 8	Dienstag Dezember 9 9	Mittwoch Dezember 10 10	Donnerstag Dezember 11 11	Freitag Dezember 12 12	Samstag Dezember 13 13	Sonntag Dezember 14 14
Montag Dezember 15 15	Dienstag Dezember 16 16	Mittwoch Dezember 17 17	Donnerstag Dezember 18 18	Freitag Dezember 19 19	Samstag Dezember 20 20	Sonntag Dezember 21 21
Montag Dezember 22 22	Dienstag Dezember 23 23	Mittwoch Dezember 24 24	Donnerstag Dezember 25 25	Freitag Dezember 26 26	Samstag Dezember 27 27	Sonntag Dezember 28 28
Montag Dezember 29 29	Dienstag Dezember 30 30	Mittwoch Dezember 31 31

Keine Termine.

Januar 2026

Montag	Dienstag	Mittwoch	Donnerstag	Freitag	Samstag	Sonntag
			Donnerstag Januar 1 1	Freitag Januar 2 2	Samstag Januar 3 3	Sonntag Januar 4 4
Montag Januar 5 5	Dienstag Januar 6 6	Mittwoch Januar 7 7	Donnerstag Januar 8 8	Freitag Januar 9 9	Samstag Januar 10 10	Sonntag Januar 11 11
Montag Januar 12 12	Dienstag Januar 13 13	Mittwoch Januar 14 14	Donnerstag Januar 15 15	Freitag Januar 16 16	Samstag Januar 17 17	Sonntag Januar 18 18
Montag Januar 19 19	Dienstag Januar 20 20	Mittwoch Januar 21 21	Donnerstag Januar 22 22	Freitag Januar 23 23	Samstag Januar 24 24	Sonntag Januar 25 25
Montag Januar 26 26	Dienstag Januar 27 27	Mittwoch Januar 28 28	Donnerstag Januar 29 29	Freitag Januar 30 30	Samstag Januar 31 31

Keine Termine.

Februar 2026

Montag	Dienstag	Mittwoch	Donnerstag	Freitag	Samstag	Sonntag
						Sonntag Februar 1 1
Montag Februar 2 2	Dienstag Februar 3 3	Mittwoch Februar 4 4	Donnerstag Februar 5 5	Freitag Februar 6 6	Samstag Februar 7 7	Sonntag Februar 8 8
Montag Februar 9 9	Dienstag Februar 10 10	Mittwoch Februar 11 11	Donnerstag Februar 12 12	Freitag Februar 13 13	Samstag Februar 14 14	Sonntag Februar 15 15
Montag Februar 16 16	Dienstag Februar 17 17	Mittwoch Februar 18 18	Donnerstag Februar 19 19	Freitag Februar 20 20	Samstag Februar 21 21	Sonntag Februar 22 22
Montag Februar 23 23	Dienstag Februar 24 24	Mittwoch Februar 25 25	Donnerstag Februar 26 26	Freitag Februar 27 27	Samstag Februar 28 28

Keine Termine.

März 2026

Montag	Dienstag	Mittwoch	Donnerstag	Freitag	Samstag	Sonntag
						Sonntag März 1 1
Montag März 2 2	Dienstag März 3 3	Mittwoch März 4 4	Donnerstag März 5 5	Freitag März 6 6	Samstag März 7 7	Sonntag März 8 8
Montag März 9 9	Dienstag März 10 10	Mittwoch März 11 11	Donnerstag März 12 12	Freitag März 13 13	Samstag März 14 14	Sonntag März 15 15
Montag März 16 16	Dienstag März 17 17	Mittwoch März 18 18	Donnerstag März 19 19	Freitag März 20 20	Samstag März 21 21	Sonntag März 22 22
Montag März 23 23	Dienstag März 24 24	Mittwoch März 25 25	Donnerstag März 26 26	Freitag März 27 27	Samstag März 28 28	Sonntag März 29 29
Montag März 30 30	Dienstag März 31 31

Keine Termine.

April 2026

Montag	Dienstag	Mittwoch	Donnerstag	Freitag	Samstag	Sonntag
		Mittwoch April 1 1	Donnerstag April 2 2	Freitag April 3 3	Samstag April 4 4	Sonntag April 5 5
Montag April 6 6	Dienstag April 7 7	Mittwoch April 8 8	Donnerstag April 9 9	Freitag April 10 10	Samstag April 11 11	Sonntag April 12 12
Montag April 13 13	Dienstag April 14 14	Mittwoch April 15 15	Donnerstag April 16 16	Freitag April 17 17	Samstag April 18 18	Sonntag April 19 19
Montag April 20 20	Dienstag April 21 21	Mittwoch April 22 22	Donnerstag April 23 23	Freitag April 24 24	Samstag April 25 25	Sonntag April 26 26
Montag April 27 27	Dienstag April 28 28	Mittwoch April 29 29	Donnerstag April 30 30

Keine Termine.

Mai 2026

Montag	Dienstag	Mittwoch	Donnerstag	Freitag	Samstag	Sonntag
				Freitag Mai 1 1	Samstag Mai 2 2	Sonntag Mai 3 3
Montag Mai 4 4	Dienstag Mai 5 5	Mittwoch Mai 6 6	Donnerstag Mai 7 7	Freitag Mai 8 8	Samstag Mai 9 9	Sonntag Mai 10 10
Montag Mai 11 11	Dienstag Mai 12 12	Mittwoch Mai 13 13	Donnerstag Mai 14 14	Freitag Mai 15 15	Samstag Mai 16 16	Sonntag Mai 17 17
Montag Mai 18 18	Dienstag Mai 19 19	Mittwoch Mai 20 20	Donnerstag Mai 21 21	Freitag Mai 22 22	Samstag Mai 23 23	Sonntag Mai 24 24
Montag Mai 25 25	Dienstag Mai 26 26	Mittwoch Mai 27 27	Donnerstag Mai 28 28	Freitag Mai 29 29	Samstag Mai 30 30	Sonntag Mai 31 31

Keine Termine.

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Adresse

Universität Siegen
Fakultät IV/Department Physik
Theoretische Physik 1
Walter-Flex-Straße 3
57072 Siegen

Tel.: +49 271 740-3890 (Sekretariat)
Fax: +49 271 740-3804

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Internes

Montag	Dienstag	Mittwoch	Donnerstag	Freitag	Samstag	Sonntag
	Dienstag April 1 1	Mittwoch April 2 2	Donnerstag April 3 3	Freitag April 4 4	Samstag April 5 5	Sonntag April 6 6
Montag April 7 7	Dienstag April 8 8	Mittwoch April 9 9	Donnerstag April 10 10	Freitag April 11 11	Samstag April 12 12	Sonntag April 13 13
Montag April 14 14	Dienstag April 15 15 4:00 pm – 5:00 pm Silicon Detector R&D for the CSES missions and beyond 4:00 pm – 5:00 pm Silicon Detector R&D for the CSES missions and beyond ENC-D308 Kontakt: biswas@hep.physik.uni-siegen.de Speakers: Coralie Neubuser (Universita degli Studi di Trento & INFN) The China Seismo-Electromagnetic Satellite (CSES) missions represent the forefront of space-based efforts to study the coupling between the ionosphere and lithosphere. Equipped with a diverse array of instruments, these missions can detect a broad range of perturbations in the ionosphere and magnetosphere, including transient electromagnetic emissions (e.g., from lightning) and long-duration particle injections resulting from space weather events. The first satellite was launched in August 2018, and in this presentation, I will highlight some of the key scientific findings obtained so far. One of the principal instruments aboard CSES is the High-Energy Particle Detector (HEPD), which monitors electrons and protons with energy thresholds of 3 MeV and 30 MeV, respectively. The Limadou collaboration has developed an enhanced version of the HEPD for the second satellite in the CSES constellation, slated for launch in June 2025. A significant upgrade is the use of Monolithic Active Pixel Sensors (MAPS) for the tracker, a technology never previously used in space. Compared to conventional hybrid silicon microstrip technology, MAPS offer improved precision, robustness, easier control and readout, reduced costs, and less invasiveness. However, MAPS still face challenges, such as small size and higher power consumption. The HEPD-02 tracker will consist of 150 ALPIDE sensors, with a custom-designed operation mode and readout system tailored for space applications. The flight model of HEPD-02 underwent extensive test-beam campaigns in 2023, and I will present the first performance results from these tests. In addition to the CSES missions, next-generation astroparticle spaceborne detectors require large-area, solid-state detectors capable of single-hit precision timing measurements. Currently, silicon microstrip detectors are the only viable technological option to meet the large-area coverage and stringent power consumption constraints required for space operations. I will provide an overview of the leading initiatives in this field, before introducing the ARCADIA project by INFN. ARCADIA is developing MAPS with an innovative sensor design that incorporates proprietary backside processing to enhance charge collection efficiency and timing performance across a wide range of operational and environmental conditions. The novel design aims to achieve extremely low power consumption — on the order of 10 mW cm-2 or better — for low hit rates in space applications. Since the initial design phase, several new test-chip versions have been developed and tested, with a specific focus on applications requiring picosecond time resolution. Current efforts are focused on advancing this technology to meet the needs of a future gamma-ray telescope, for which a dedicated demonstrator is being designed and will undergo production in the next year. https://indico.physik.uni-siegen.de/event/507/	Mittwoch April 16 16 12:45 pm – 1:45 pm Tobias Huber: A brief summary of the Spring meeting of the German Physical Society 12:45 pm – 1:45 pm Tobias Huber: A brief summary of the Spring meeting of the German Physical Society ENC-D308 Speakers: Tobias Huber A brief summary of the Spring meeting of the German Physical Society https://indico.physik.uni-siegen.de/event/420/	Donnerstag April 17 17	Freitag April 18 18	Samstag April 19 19	Sonntag April 20 20
Montag April 21 21	Dienstag April 22 22 4:00 pm – 5:00 pm RI-(S)MOM to MSbar Conversion for BK at Two-loop Order (Sandra Kvedaraite) 4:00 pm – 5:00 pm RI-(S)MOM to MSbar Conversion for BK at Two-loop Order (Sandra Kvedaraite) ENC-D308 Speakers: Sandra Kvedaraite (Granada U.) The Kaon bag parameter, BK, is a key non-perturbative ingredient in the search for new physics through CP-violation. It parameterizes the QCD hadronic matrix element of the effective weak ∆S = 2 four-quark operator which can be computed non-perturbatively on the lattice. The perturbative matching of BK between the lattice renormalization schemes and MSbar scheme has been done before at one-loop order. In this talk I will present the conversion factors for BK between the RI-(S)MOM and the MSbar scheme at two-loop order. I will discuss their residual scale dependence and present updated values for BK as well as for the indirect CP violation in the Kaon system. This talk is based on preprint arXiv:2411.19861. https://indico.physik.uni-siegen.de/event/517/	Mittwoch April 23 23 12:45 pm – 1:45 pm Eleftheria Solomonidi: Hadronic contributions to rare charm decays and implications for CP violation 12:45 pm – 1:45 pm Eleftheria Solomonidi: Hadronic contributions to rare charm decays and implications for CP violation ENC-D308 Speakers: Eleftheria Solomonidi Hadronic contributions to rare charm decays and implications for CP violation https://indico.physik.uni-siegen.de/event/555/	Donnerstag April 24 24	Freitag April 25 25	Samstag April 26 26	Sonntag April 27 27
Montag April 28 28	Dienstag April 29 29	Mittwoch April 30 30 12:45 pm – 1:45 pm Sebastian Edelmann : Prospects for detecting new dark physics with the next generation of atomic clocks 12:45 pm – 1:45 pm Sebastian Edelmann : Prospects for detecting new dark physics with the next generation of atomic clocks ENC-D308 Speakers: Sebastian Edelmann Prospects for detecting new dark physics with the next generation of atomic clocks https://indico.physik.uni-siegen.de/event/558/

Theoretische Elementarteilchenphysik

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