Institute for Theoretical Particle Physics (TTP)

The focus of our research at the Institute for Theoretical Particle Physics (TTP) is the study of physics of elementary particles. Physics of elementary particles is successfully described by the Standard Model of Particle Physics that was proposed as the leading theory of Nature more than 40 years ago. The Standard Model is an extremely successful theory which describes a vast majority of phenomena that are observed in the Universe. Yet, theoretical shortcomings of the Standard Model suggest that this theory is incomplete and that additional, so far unknown, particles and interactions should exist. The research of the Institute contributes towards discovering the physics beyond the Standard Model through refined theoretical descriptions of Standard Model processes and through a development of specific models of New Physics.

Researches at the Institute provide theoretical support for studying Higgs boson physics at the LHC, explore the flavour structure of the Standard Model and beyond by studying properties of B and D mesons and develop new methods for performing high-precision computations in Quantum Field Theory.

If you are interested in theoretical particle physics, we always welcome students to work on their Bachelor's or Master's thesis at TTP. In order to learn more, you can visit the 11th floor and talk to us or contact us via e-mail. You can find more information, including a list of completed Bachelor and Master theses, here.

News


06.11.2025 KCETA Particle Physics Colloquium

Next Thursday, 06.11.2025 at 15:45, we have our first KCETA Particle Physics Colloquium of the semester. This time Dr. Kristof Schmieden (U. Bonn) will talk about “The Hunt for High Frequency Gravitational Waves - GravNet“. The seminar will take place in the Kleiner Hörsaal A (CS).


05.11.2025 Institute's seminar

Our first TTP seminar of this semester will take place on Wednesday 5 November at 13h15. The speaker this time is Matteo Tresoldi, who will talk about “Nested Soft-collinear subtraction”. The seminar will take place in room 10/01.


04.11.2025 Particle Physics Seminar

Next Tuesday, 04.11.2025 at 15:45, we will have a special Particle Physics Seminar. This time we welcome Rhitaja Sengupta (U. Bonn), who will talk about “Long-Lived Particles: Opportunities at Present and Future Colliders”. The seminar will take place in room 10/1.





29.10.2025 New members at the Institute

We warmly welcome our institute's newest members: Sebastian Biekötter, Mateusz Czaja, Dennis Horstmann, Markus Mosbech, Lena Rathmann, Liangliang Su, Yingxuan Xu (postdoc) and Ann Cathrin Wesener (PhD). May their time at our institute be enjoyable and filled with productivity!


21.10.2025 Particle Physics Seminar

Next Tuesday, 21.10.2025 at 15:45, we will have a special Particle Physics Seminar. This time we welcome Shinya Kanemura (Osaka University), who will talk about “A scenario for Electroweak baryogenesis in 2HDM”. The seminar will take place in room 6/1.


29.09.2025 Annual CRC TRR 257 meeting

From 29.09.2025 to 01.10.2025 we will have the three-day Collaborative Research Center TRR 257 annual meeting in Siegen. Status and future prospects of the various projects of our CRC will be discussed.




news archive

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